Such as citrus: orange, orange, kumquat, lemon, grapefruit, grapefruit, lime and so on. , rich in Taiwan Province Province, is deeply loved by people. It is considered as a fruit with auspicious meaning, but it can be used as the "sour" fruit with the richest vitamin C among all kinds of fruits. Besides raw food, it can also be made into fruit juice, jam and other products.
Grape variety: There are many varieties, rich yield and bright color, and it is also the fruit with the highest economic value. Besides being fresh, it can also be made of wine or dried fruit, fruit juice or jam. In addition to containing more nutrients than ordinary fruits, black, purple or red grapes contain polyphenols, peels and seeds, and the antioxidant capacity of proanthocyanidins (OPC) contained in them is also a very popular health topic recently.
Drupe: such as cherry, peach, plum, jujube, olive, longan, litchi and so on. , containing stones, all belong to this category. Most of them are fresh, and some are pickled and processed foods, such as candied fruit, canned fruit, dried fruit or wine.
Pear fruits: apples, pears, persimmons and loquats, including several drupes. Under normal circumstances, apples and pears are rich in soluble dietary fiber-pectin, which can help regulate human metabolism. Due to the short production season of persimmon and loquat, the yield is low.
Melons: such as watermelon, melon, cantaloupe, cantaloupe, etc. Protected by a hard epidermis, it can be preserved at room temperature without spoilage if it is not cut. With high moisture content and high sweetness, it is a sweet fruit.
The main excellent fruit varieties and cultivation techniques are briefly described as follows:
1。 Focus on developing high-quality pears
Early-maturing pears in the south are stable, while late-maturing pears have little development. Planting time165438+1From mid-October to early March, the planting density is 2m× 4m (84 mu) and the stem height is 40cm.
1. 1 cuiguan southern early-maturing high-quality pear, focusing on the development of the variety Haoyunshui × (Hanglv× New Century) for propagation, the tree is vigorous, insect-resistant, mostly erect, early-bearing, high-yield, large, round, and similar in size, with an average single fruit weight of 250g and a brown peel. After rust, the double-layer fruit bag obviously turns pale yellow and the rust spot is not obvious. This variety has the advantages of fast growth, strong tree vigor, high branching rate, top flower bud bearing, high fruit setting rate and good early fruit bearing, but it can't form flower buds continuously, requires a lot of chemical fertilizer input, and the fruit without bagging is poor in aesthetics. Therefore, attention should be paid to managing the common results of pointed wax paper, long fruit branches and thin fruits of powerful young primiparas who are slowly released; Pay attention to thinning, thinning and increasing organic fertilizer, pay attention to post-harvest recovery, late pest control, reduce or prevent post-harvest defoliation; Strict thinning, double bags, and the yield per mu is controlled at about 2500 kg. Pollination varieties are yellow, fragrant and so on.
1.2 Pears are of early maturity quality, with emphasis on developing varieties. Korea and Zaoya× Sanmei have become more sincere, with strong tree vigor, strong stress resistance and insect resistance, relatively open tree vigor, high and stable early fruit yield, large fruit, flat and beautiful fruit shape, uniform size, average single fruit weight of 400g, yellow peel, consistent color and beautiful appearance; The core is very small, the pulp is milky white, crisp and delicate, the juice is rich, the soluble solid content is as high as 13%, and the quality is extremely high. It will expire in early August and will be stored and transported before the end of July. It should be pointed out that among healthy young primiparas, pruning sharply, moderately shortening, finely controlling production management, increasing investment at ordinary times, implementing sparse bagging (double bagging), strengthening foliar fertilization and pest control before and after harvest, and paying attention to sparse combination during pruning in winter, and controlling the yield at about 3000 kg. Pollination varieties are yellow, Cuiguan and so on.
1.3 Golden high-quality medium-ripe pear, South Korea, new height× newly bred, vigorous tree growth, disease resistance, insect resistance, multi-erect, early fruiting, stable yield, large, oblate, refined fruit shape, average single fruit weight of 350g, golden skin, consistent color, beautiful appearance, double-layer bag translucent milky skin, more beautiful appearance; The stone is small, the pulp is white, dense, delicate, juicy and sweet, the soluble solid content is above 13%, the quality is extremely high, and it can be stored and transported in the middle and late August. It should be pointed out that in a strong young primipara, the management is moderate stub; Usually, increase the application amount of organic fertilizer, strengthen the advocacy of thinning, bag before and after harvest (double bags) to improve foliar topdressing and post-harvest pest control, and combine pruning with thinning in winter; The output is controlled at around 3000 kg. Yellow and other pollinated varieties.
1.4 Other varieties such as Xiang, Cui Qing, Lan, Xue Xuefeng, etc. Can be properly developed.
2。 Choose not to plant bayberry in the yellow hills and mountains of Hongyi? Intensive development, in the second Myrica rubra forest, is conducive to improving the land utilization rate, increasing farmers' income, returning to the ecological forest, and is conducive to the improved ecological environment, which is very significant economic and ecological benefits. When the male plant 1%, the planting time is from mid-February to early April, and 40 to 60 mu of vegetation is generally planted. Before sowing, determine the planting point (choose a place with relatively uniform distribution and relatively fertile soil), then dig a planting hole with a diameter of 1m 1.2M and a depth of 0.5m 0.8m (the soil condition is good, so dig it in time), cover the hole stone foundation with 0.2M topsoil base fertilizer (mainly organic fertilizer), and put it on the upper wall with tight cavity to stretch out roots when sowing and seedling raising. After planting, its stems are 20 cm and 30 cm high. The depth should not be shallow when sowing. After planting for two years a year, we should pay special attention to drought prevention and drought relief, especially in the dry and hot season from July to August this year, and water and firewood should be used in time to shade. We should find the lost plants and replant them in time.
2. 1 Focus on developing high-quality varieties. It is the largest Myrica rubra fruit in the world, with strong disease resistance, fast growth, round crown, good early fruiting and high yield. The average fruit weight is 25G, the maximum fruit column length is more than 45g, the flesh is purple, juicy, the apex is blunt, the stone is small, and the edible rate is high. Measures should be taken to control the age of this variety, such as strengthening dressing change to reduce fruit drop, and applying growth regulation or supervision measures to promote premature delivery agency. Young people should strengthen the application of organic fertilizer or organic fertilizer, prune more and pull less, and restrain the top crown in time.
2.2. Other varieties of early chestnut honey such as water chestnut, rice and plum blossom can be developed appropriately.
3。 Loquat focuses on developing high-quality fresh-processed varieties, which are suitable for planting on hillsides with relatively poor light and fertile soil. The planting period is from early February to late March, the planting density is 2m×4 4m (84 mu), and the dry height is 30±40cm.
3. 1 Dahongpao loquat was bred by Luoyang youth. It is a red sand variety with vigorous tree growth, open cover, early fruit and high yield, stable yield, drought resistance, barren resistance, disease resistance and easy cultivation. The fruit is large, round or oval, with a single fruit weight of 34G and a maximum fruit weight of 67g. Pericarpium Citri Tangerinae and mature sepals appear green for 4 weeks, with orange-red pulp, hard and thick pulp, medium fruit juice and about 65,438+00% soluble solids. Mature in mid-May, stored, transported, processed and eaten fresh. It is necessary to strengthen refinement, organic fertilizer and phosphorus and potassium fertilizer, and apply more leaves.
3.2 Dahongpao red sand species, with weak tree vigor, open cover, early fruiting and high yield. The fruit is large and round, with a single fruit weight of 36G. The maximum single fruit weight of 64G is concentrated in the orange peel, thick orange pulp, thick juice, sweet and slightly sour, and the soluble solid content is about 13%. Mature and storable fresh food processing varieties in late May. We should strengthen the protection of flowers and fruits, organic fertilizer, pruning and enhancing vitality.
4。 Citrus fruits are also the main varieties in this city. In recent years, due to the low price, citrus is seriously out of control, with low yield, poor benefit and generally poor product quality. However, in the future market trend analysis, the city's main production, wide-peel citrus processing and export, has great market potential. Therefore, we must attach importance to citrus production and cultivation to improve economic benefits. First of all, we should focus on winter and spring, promote the use of "three thinning and one change" technology, improve spring pruning, strictly refine orchard crown, sparse branches, timely sparse seedlings after physiological fruit drop, change some habits of organic fertilizer or organic fertilizer and compound fertilizer, transform low-yield orchards and improve fruit quality. Second, actively optimize the product structure and develop varieties with strong cold tolerance, good quality and stable yield, such as early-maturing satsuma oranges. "Datian" citrus, Nanxiang, Cao Tian, etc. Grafting some citrus varieties with good growth potential and late maturity (mainly grafted varieties, Cao Tian), and the third is to eliminate the middle and late maturity citrus varieties and inefficient mixed citrus varieties that are seriously out of control and switch to other fruit varieties.
4.65438+ planting, the suitable planting density is 1m× 3m (222 mu), the dry height is 30cm, and young people should apply thin fertilizer frequently.
4.2-day-old Nante early-maturing mandarin orange trees are strong, with high and stable first-fruit yield, large fruit weight of about 1.20g, thin, black, smooth, juicy and delicious, and mature in late September. Planting density 12m× ×34M (planting area is about11mu), and stem height is 30cm.
4.3 Cao Tian mixed oranges, with medium tree potential, high and stable first fruit, large and oblate fruit, and single fruit weighing about 200 grams. Pericarpium Citri Tangerinae is smooth and beautiful, difficult to peel, juicy, soft, sweet and thin, with good residue. 1 1 ripens in the last ten days. We should pay more attention to planting, the planting density is 12m× 3m (mu planting11222), the dry height is 30cm, the young and thin fertilizers should be applied frequently, the debugging should be strengthened and refined, more organic fertilizers and chemical fertilizers should be applied, and the antifreeze should be paid attention to.
5。 Grape, grape and fruit trees need a higher management type. It is necessary to choose the soil, fertilizer and water conditions in this area and have excellent fine management. 165438+1During the planting period from mid-October to early March, the planting density is 12 m× 2.54 m (row spacing: 2.5M for double cross V-shaped frame, 3M for high fence, roof shed and 34 m for scaffolding). Apply sufficient fertilizer before planting, leave 34 live buds on the stems, and cut off the stems.
5. 1 jingyu some early-maturing varieties have strong growth potential, medium branches and good fruits. The ear is conical, the fruit is oval, the ear weight is about 500g, the 1000-grain weight is 78 g, the ear is compact, the peel is yellow-green, crisp, the soluble solid content is 14% to 16%, the fruit does not crack, and the quality is good, compared with storage and transportation. Medium resistance. To meet the needs of grafted seedlings, it is a suitable rootstock for Kyoho grape, which can be cultivated in greenhouse or sheltered from rain, thinning ears, repeatedly thinning and controlling production, strengthening the control of white rot and pruning in winter.
5.2 seedless cooked chicken hearts are more and more prosperous than fat-tolerant varieties, with moderate branches and good fruits. Ears are conical and heart-shaped. The natural seedless spike weighs 300 and 500 grams, and the 1000-grain weight is 45 grams. The weight of spike treated with leavening agent can reach 70,065,438 0,200 grams, and the weight of 1000 grains can reach 78 grams. The ears are close to the ears, and the flesh is crisp and can be sliced. The content of soluble solids is 65,438+04% to 65,438+06%. The resistance to downy mildew and gray mold is weak. To meet the needs of grafted seedlings, it is a suitable Kyoho rootstock, which can be cultivated in greenhouse or sheltered from rain. It is necessary to control the thinning of ears and axes, control the production of small fruits, and implement large fertilizer and water. Then, the planting coverage of this bank will promote its rapid growth, improve black pox, prevent white rot, add fertilizer, pick fruits, prevent mildew, and shoot winter pruning. The amount of buds left on the main mu is about 1.2 million.
5.3 Other varieties include French Zaohong, Gaohong, laterite, Meizhi, Victoria, Rizamat and Yafu Rosa.
6。 Other fruit varieties
6. 1 Peach blossoms are well developed, and the early-maturing varieties Nakajima and Xinchuan (mature in mid-August, with high and stable yield, beautiful fruit shape, bright red peel, crisp pulp and good quality) have early and excellent results, and ruby nectarine and peach are early-maturing. Choose a plot with good soil permeability, moderate fertility, easy drainage and good lighting conditions to build the garden. The planting time is165438+/kloc-0 from mid-October to early March, with a planting density of 23m× 4m, a stem height of 3040cm and two main branches. The opening angle of the plastic main branch of V-shaped pistachio is 6070, and the main branch and the secondary branch bear fruit directly on the axis, and the crown height is.
6.2 Proprietor develops early, and the medium-mature variety is crisp and big, which is different from early ruby (the variety has strong tree potential and is easy to form flower buds, and the early fruit has high and stable yield, and the fruit is round, and the fruit of the same size weighs 75g, with red skin and yellow flesh and good brittleness), and the big stone grows early and is a royal gem. We should choose plots with good soil permeability, moderate fertility, easy drainage and good lighting conditions to build gardens. The planting time is165438+1mid-October to early March, the planting density is 1.52m× 4m, the stem height is 3040cm, the main branch likes plastic, and the opening angle is 6070. The fruiting branches are directly cultivated on the long axis. 3 meters.
1. Downy mildew of vegetables: You can destroy cruciferous vegetables, cucumbers, lettuce, onions, spinach and cabbage. Downy mildew is a relatively important and dangerous disease. This larger, more important and more dangerous disease is an epidemic disease with similar symptoms, occurrence, pathogenic biology and environmental conditions, which causes great losses. Symptoms: Diseases can occur throughout the growth period, and germs such as leaves, stems, stems and seed pods can spread to far places. On the leaves, the unknown yellow-green edge gradually turns from yellow to brown, and the veins in the restricted area turn into enlarged polygons. The humidity in the field is high, and the mildew is frosted at the back, and the diseased spots often heal into pieces. Finally, the whole leaf is dead. At first, the disease mostly occurred on the leaves near the ground, leaving a little.
Main characteristics of vegetable downy mildew symptoms:
① It mainly harms the leaves, and the early lesions are now green or yellow, with no obvious periphery;
(2) The color of the fungal layer (sporangium and spore stalk) growing on the surface of the lesion (mainly on the back leaf); /& gt； (3) Starting from the ground near the diseased part of the leaf, it gradually extends upward or inward, which rarely happens. Pathogens: Fungi infected with these pathogens are parasites, which can only absorb nutrients from living tissues and vegetables that destroy host tissues and cells. Occurrence regularity and environmental conditions, oospore plant fragments remain in the soil, or inherit the seeds on the surface in winter. After winter, the rain splashed on the leaves close to the ground, and its diffusion caused the buds to soak in the test tube at first. The weather is hot and cold, sunny and rainy, wet in the field and seriously ill.
Control method:
① selecting disease-resistant varieties;
② Seed treatment: 50% or 75% thiram chlorothalonil seeds, accounting for 0.4% of the seed weight;
③ Clean countryside: reasonable crop rotation, ditches around good cars, low humidity and underground water sources;
④ Chemical control: At the early stage of the disease or in the center where the disease appears immediately after spraying, spray the existing epidemiological cream, Durex cream, Ruiyao copper and 25% metalaxyl 1000 times solution. Hu Jintao effect: You can also spray with 800 times solution of zineb, mancozeb and benomyl, and pay attention to the back when spraying.
Vegetable diseases: vegetables such as cucumber, wax gourd, pepper, taro, potato, etc. It may be hurt, and it has an upward trend in recent years. More importantly, diseases such as suitable environment and rapid onset often cause damage to the whole field in a short time.
Symptoms: Different vegetable varieties have different symptoms:
(1) Cucumber blight damages nodes and stems, and can kill leaves and fruits. At the early stage, the stem base was green and waterlogged, the upper leaves gradually withered, and finally the whole plant died. When the diseased plants wither, the diseased leaves still show the green stems that have been killed, the diseased plants partially contract and kink, and the upper leaves show wilting. When the leaves are damaged, dark green water stains are produced at first, which enlarges the near-circular lesion and makes the edge not obvious. Wet weather often causes the whole leaf to rot.
② Cucumber diseases: damage to fruits and grape leaves. Winter melon waterlogged brown spots, low-incidence depression, Bai Sensen's spongiform encephalopathy mildewed, rotten and smelly parts. Brown lesion, inconspicuous edge, white mold, wet leaf rot.
(3) Pepper: mostly occurs in the adult stage. Early lesions were dark brown, like a dot. The disease behind is black, the valve stem is damaged, the lesion expands and branches, and the plant withers quickly and dies quickly. Pathogen: a disease caused by fungi. Seeds with regular occurrence and environmental conditions overwinter on seeds, and the most withered spores and hyphae overwinter in the soil of diseased plants. After rain splashing, the pathogen wax gourd should adhere to the principle that soil particles are mainly overwintering parasitic bacteria to spread bacteria, and the initial soaking caused by suitable climatic conditions invades the host for reproduction, and also spreads infection through airflow and rain. Moisture, cultivation management level, variety resistance, among which humidity is an important factor. The influencing factors of diseases in humid environment, as well as graves with the same epidemic diseases, are all low-lying, poor drainage, sticky soil, waterlogging in rain or heavy water leakage next to the drained land. Partial application of nitrogen fertilizer, extensive management and high-humidity vegetable diseases are also very important.
Control method:
(1) high ridge to strengthen waterlogging;
(2) Rational rotation and increased application of organic fertilizer;
③ selecting disease-resistant seeds;
④ Chemical control and timely spraying protection are more effective measures to prevent the spread of epidemic diseases. Because of the short incubation period and rapid spread of the disease, it can be sprayed with 0.3% Bordeaux mixture of cucumber, 0.5% pepper, taro and potato with the concentration of 1%, and metalaxyl can be sprayed for 500 times. Zineb 600 times liquid Tobuzin, Dixintong 1000 times liquid spray.
3. Vegetable Fusarium wilt: It can damage crops such as pepper, tomato, cucumber, wax gourd, loofah and watermelon.
Symptoms: Eggplant mainly approaches the leaves from the ground, and the leaves are yellow and brown after drying, but they are still attached to the stem, and the leaves do not fall off. Sometimes the leaves are yellow, and the stem or leaves are only on one side, and the leaf color is normal. The longitudinal and transverse views of the stem and the blood vessels are brown locally. Melon wilt, early onset, stem wilting at the base, leaves suddenly like, easy to cause confusion. Obviously, the leaves were short of water around noon, and then gradually returned to normal at night. After a few days, the whole leaf did not fall off. The surface of the disease often produces white or pink mold under wet conditions. Occurrence regularity and environmental conditions: the fragments of pathogenic plants stay in the soil for the winter, which can rot and live in the soil and pollute the surface of seeds. Bacteria mainly invade the wound through the roots, and pathogens infect the seedlings after flowering to adult stage. Vegetable soil is acidic and sticky, and diseases are serious in low-lying and humid areas.
Prevention and control methods:
(1) Selecting disease-resistant and disease-free seeds and processing the seeds;
② rotation;
③ Chemical control: spraying carbendazim or benadryl 800 times and mancozeb 1000 times.
Anthracnose of four kinds of vegetables: it can harm melons, cruciferous vegetables, peppers, eggplant, beans and various crops. Distribution and harm: Anthracnose is an important crop disease in Sichuan, especially in pepper, cabbage and other crops. It is widely distributed and has an upward trend in recent years.
Symptoms: Colletotrichum gloeosporioides, if it occurs at seedling stage, the stem base of the seedling can shrink and change color. Brown semicircles appear at the edge of the leading blade. Adult diseases mainly harm leaves, grapes, fruits and other departments, and the symptoms of various melons are slightly different. Pathogen: a disease caused by fungi. Pathogenic conditions and regularity: In winter, some spores are attached to the surface of seeds. Under the condition that rain, insects and other propagators directly enter through the parasitic surface, suitable environment, germs and bacterial pathogens block impurities, which is the spread of growing termites invading host plants from wounds. The severity of environmental conditions is closely related to anthrax. Anthrax caused by humidity is a major factor. Melon anthracnose is the most serious disease when the relative humidity is above 97% and the temperature is 24℃. Pepper is also serious in hot and humid environment, so warm and humid weather is the most prone to disease.
Prevention and control methods:
① selecting disease-resistant varieties;
(2) before sowing, the seeds are disinfected and soaked in warm soup, and the seeds of melons and peppers are soaked in warm water at 55 DEG C for 15 minutes, or soaked in formalin solution with a time of 100 for 30 minutes;
④ ③ The grain rotates and turns deep, resulting in bacterial death; Reasonable close planting, paying attention to field drainage, rational fertilization, avoiding mechanical injury or daytime injury, and improving the disease resistance of host plants;
⑤ Chemical control: thiophanate methyl, carbendazim 700-800 times solution and zineb 800 times solution can be used for control.
5% of vegetable wilt: it can harm tomatoes, eggplant, potatoes, peppers and other crops, followed by tomatoes, eggplant and potatoes, which suffer the most.
Symptoms: Tomato seedlings are asymptomatic, the flowering plants grow close to the disease, the first unit leaves wither, and after the lower leaves wither, they wilt again during the day and night, and the leaves are lighter than the color for several days, but they still die for about 7 days. Cross-sectional examination shows that milky white mucus can be secreted when squeezed by hand. In the early stage of eggplant bacterial wilt, each branch suddenly wilted, with leaves, some all leaves wilted, some withered in half, and the other half was right. The diseased leaves are pale, gradually prolonging the diseased leaves and increasing the number of days. Finally, the leaves on the branches withered, and the diseased leaves withered and fell off in the later stage, or left on the branches, roots and stems without obvious symptoms. The cortex and xylem of the stem are brown. Pathogen: bacterial disease. Incidence and regularity of bacteria: bacteria overwinter, keep strains in the soil, live in saprophytic stubble and can survive in the soil for 1-2 years. Bacteria from the roots of plants immersed in wounds in the body are blocked, water cannot rise, leaves wither and die due to dehydration, bacteria rely on rain, farm tools and livestock to reproduce, occasionally it rains, the fields are wet, and the soil acidity is high.
Prevention and control methods:
① Rotation: Generally, three-year rotation system is the best planting;
② Adjust the pH value of soil and apply more lime and ash;
③ Improve cultivation techniques, adopt deep furrow and narrow border cultivation, cultivate strong seedlings and increase the application amount of phosphorus and potassium fertilizer;
(4) Chemical control: If the diseased plants are found in the early stage, they should be removed and destroyed, and then sprayed with lime for disinfection. At the beginning of the disease, streptomycin was sprayed at the rate of 100- 150PPM, or injected into the enemy's pocket at the rate of 500- 1000 times.
Aphids: Aphids are a worldwide harmful crop. In addition to harm, melons and vegetables also eat beans, eggplant, Cruciferae, Malvaceae and other plants. Adults and nymphs smoke on the back of leaves with spears, leaving victims, causing severe wilting plant seedlings to dry up and die, leaves to curl and grow slowly. They are also the main disseminators of virus diseases, but they also aggravate the occurrence and prevalence of stem blight. Occurrence: Aphids have high fertility, and it takes several generations a year, especially in the dry season, and many things are easy to handle.
Control method:
① Eliminate overwintering aphids. The overwintering host of winged aphids is as high as 30%, and phoxim or dimethoate 1000 times is sprayed for control;
② Weeds should be eliminated, and weeds and insects in ditches, roadsides and roadsides inside and outside the field should be eliminated by combining manure in winter and spring. Chemical control: when aphids are found, dimethoate and aphis-free pine can be sprayed with 65,438+0,000 times solution, and diphacinone and metoclopramide can also be sprayed with 3000-4000 times solution.
The main harm of Spodoptera assulta to vegetable crops is pepper, beans and other crops. Pepper was invaded by immature fruit moth, which affected the yield and quality of pepper and spread soft rot, causing serious harm. Frequency of occurrence: There are 4 generations in Changsha every year, and a few have 5 generations. Pupa overwinters in a soil room with a few inches of pepper on the soil surface. Overwintering adults peak in May, from mid-May to early June, eggs of each generation hatch in early June, larval damage peak in mid-June, larval damage peak in early June and moth peak in mid-July. The middle and late July is the peak period of the second generation eggs, the late July is the peak period of larval damage, and the mid-August is the peak period of moth emergence. The damage peak of the third generation eggs and larvae is in the middle and late August, and the peak is in the middle and late August. In mid-September, the fourth generation eggs were full, and from late September of 10 to early October of 10, most mature larvae of the fourth generation differentiated pupae to bury eggs in the winter. The generation overlap of tobacco budworm stage is very obvious, which occurs for 7-8 months a year and is very harmful. Habits: Adults live in peppers, tobacco, night activities, black lights and Yang Liuzhi every day. Adults are happy to lay eggs with peppers and tobacco. When larvae hatch, they eat eggshells. After they eat buds and bear fruit, they are 3 years old and have the habit of turning fruit into harm. The influence of rainfall is an important factor for the occurrence of tobacco budworm, which is not conducive to the occurrence of a year, and the occurrence of dry years is beneficial to rainfall.
Prevention and control methods:
(1) winter ploughing to destroy pupae;
(2) Remove the fruit eaten by insects in time, destroy the fruit inside the larvae and prevent the fruit eaten by insects from being misappropriated;
(3) Planting tobacco traps to lay eggs in winter, focusing on eradication;
(4) Black light and willow branches trap and kill adults.