How do you treat a black and long worm like this in a cornfield? How long is his growing season?

This is a stick insect. Sticky bugs, also known as night robbers, belong to the Lepidoptera, night moth family pests. It is also known as corn nightcrawler, marching bugs and so on. The larvae feed on leaves, such as wheat, rice, corn, corn, cotton, beans, vegetables, and other 16 families of more than 100 kinds of plants can be for the sticky insect food. From the point of view of the age of the stick insect, stick insect larvae of the first instar can only nibble the general leaf flesh, so that the leaves show white spots, to the 3rd instar can be eaten into the leaves become a large gap, 5-6 instar larvae into the period of bulimia, can be eaten into the light pole of maize or corn seedlings eaten up the whole, the first ambush of larvae have a swarming nature, 3 instars of the stick insect will also pretend to be dead, quickly curled up into a ball crashed to the ground after the scare, it is afraid of the light, it is afraid of the light. Sunny day generally lurking in the wheat chaff or soil, to the evening or cloudy days after climbing to the plant harm, especially the second generation of stick insects, it has a swarming, omnivorous, migratory, outbreaks of the characteristics of the regional areas, often a sudden outbreak of disaster, serious time will be eaten by the leaves to form a light pole, resulting in a serious reduction in yield or even crop failure.

1, can choose 4.5% high efficiency cypermethrin emulsion per mu 30-60 ml spray control.

2, can choose 40% chlorpyrifos emulsion per mu 50-100 ml spray control.

3, 20% Kung Fu Permethrin 50-100 ml per mu spray control.

4, 5% mevinphos 20 grams per mu spray control.　

Generally a generation takes about 45 days.

How do you treat the long and black bugs that rise up in the corn field? How long is the growing period?

Corn stick insects

There are many pesticides to control, the key is to take advantage of the early, low larvae is the key period of control!

Pictures of the insect age is old, but only increase the concentration of pesticides to control.

You can choose: mevinphos + high-efficiency cyfluthrin

fludioxonil + high-efficiency cypermethrin

chlorpyrifos + high-efficiency cyfluthrin

。。。。。。 Any one of the formulations, mechanical spraying!

Good luck!

How to cure the long and black bugs rising in the corn field

Corn stick insects? Spraying: imidacloprid 1500 times or chlorpyrifos 1000 times or speed killin 1500 times and so on.

How long is the growing period of corn

90-130 days, generally about 120 days for spring sowing; 90-110 days for summer sowing.

The number of days from seedling to maturity is the fertility period of corn. The length of corn fertility is related to factors such as variety, sowing period and temperature. The general number of leaves, early sowing, low temperature of the fertility period is long, and vice versa is short. Spring sowing 70 to 100 days, summer sowing 70 to 85 days for early maturity type; spring sowing 120 to 150 days or more, summer sowing 96 days or more for late maturity type; between the two for the medium maturity varieties.

How many days is the growing period of corn

North China in about 100 days, Northeast in about 130 days.

The main cropping system of China's corn areas:

1. Northeast, North China and parts of Northwest China is a one-year maturity of spring corn area;

2. North China Plain to one-year maturity of summer maize is dominated;

3. Southwest and southern hilly and mountainous areas of the terrain is complex, alpine mountainous areas to one-year maturity of spring maize, hilly mountainous areas to one year of maturity of summer maize, plains and shallow mountainous areas to one-year maturity of autumn maize;

4. Shallow mountainous areas to one year three mature fall corn.

4. Cultivation modes are monocropping, or intercropping with beans, potatoes, and wheat row sets. Early sowing at the right time is very important to its yield. According to the fertilizer, water conditions and varieties of characteristics, reasonable dense planting, to ensure that enough seedlings and spikes is the key to high yield.

5. Corn needs more nitrogen, potassium, less phosphorus, and can be used on the crop of the remaining phosphorus, but the amount of effective soil phosphorus is less than 10ppm, the phosphorus significantly increased. Sensitive to zinc fertilizer, zinc deficiency growth inhibition. The whole fertility water requirement 5600～6100mm/ha. Seedling water needs less, more at the time of nodulation and spikes, most at the time of male flowering, more at the time of grouting and maturity.

6. Corn does not tolerate flooding, rainy areas should pay attention to drainage. Fruit cob package leaves become yellow, the base of the black layer formation, seed hardening when harvested.

Expand:

1. Seedling fertilizer: generally applied after seedling setting to the nodulation period (about 30% of the leaf age index). The past seedling fertilizer and nodulation fertilizer is combined into one application, which has the effect of promoting root, seedling and leaf and culm, and laying a good foundation for more spikes and bigger spikes. Seedling fertilizer in addition to the application of fast-acting nitrogen fertilizer, but also at the same time into the phosphorus and potash, can also be applied to the rotted organic fertilizer.

2. Eradication fertilizer: Eradication fertilizer can promote the middle and upper leaves to increase, increase the photosynthetic area, prolong the photosynthesis of the lower leaves, in order to promote the root, strong culm, increase spikes to lay a good foundation. Fertilization fertilizer to nitrogen-based fertilizer, 10 to 15 kg per mu of urea available ditch or hole, avoid heavy rain before the application, in order to prevent the rain leaching. For the soil phosphorus, potassium fertilizer insufficient fields, fertilizer can also be mixed into the three elements of compound fertilizer, 7.5 ~ 10 kg per mu.

3. Spike fertilizer: corn in the trumpet period of spike fertilizer, not only to meet the nutrient needs of the spike differentiation, but also improve the photosynthetic productivity of the upper leaves, so that the nutrients transported into the cob, grain more and full, spike fertilizer to fast-acting nitrogen-based fertilizer, per mu can be applied urea 15-20 kg is appropriate.

4. grain fertilizer: grain fertilizer refers to the corn draw male after the application of fertilizer, generally appropriate in the grouting period. After the male corn to maturity, but also from the soil to absorb about 40% of the total amount of nitrogen and phosphorus nutrients. At the same time, about 80% of the kernel yield is dependent on the late leaves to create photosynthetic yield. Therefore, the late generally should be applied to a certain amount of fast-acting fertilizer to ensure the adequate supply of inorganic nutrients to extend the functional period of the leaves, improve photosynthetic efficiency, increase the accumulation of photosynthetic products, and promote the grain, grain weight, in order to obtain high-quality and high yield.

How long is the growing period of the goose

Commercial finished goose 72 to 80 days out of the stop. It is also to see if the feathers of the goose's wings are dry and bloodless. The first thing you need to do is to look at the feathers on the wings to see if they are dry and bloody.

(a) the division of growth and development stages

According to the characteristics of the growth and development of rabbits, the entire period of rabbits from birth to aging and death is divided into five stages.

⒈ piglet period (lactation): the period from birth to weaning. Generally 28~35~42 days.

⒈ young rabbit period: refers to the period from the day of weaning to 3 months of age. Once mated, it is counted as adulthood.

Singed adulthood: refers to the period from first mating to 3 weeks old.

Be careful of the old age: the period from 3 years old and above. The life expectancy of rabbits is generally 5 to 9 years, with a maximum of 12 years.

(ii). Age identification

⒈ look at the paws. White rabbits can be judged according to the length of the red and white parts of the foot melon. 1 year old red is longer than white: about 1 year old red and white similar; more than 1 year old red is shorter than white, the longer the white or yellow and curved and thickened with hooks, indicating that the older the age. Colored young rabbits claws are shorter and straight, and hidden in the foot hairs; older rabbits are exposed outside the foot hairs, and the tips of the claws are hooked.

⒉看门齿。 The incisors within one year of age are short, flat, white and neat; the incisors of older rabbits are yellowish, thick and large, sparse, not neatly arranged, and some of them are defective.

(3) Look at the ear tag. The ear tag has the birth year and month and breed markings. In the breeding farm should play ear tag. If the individual number is 070525HA1, the first 6 for the month and year. It means that the rabbit was born on May 25, 2007. HA is the breed code for Harbin white rabbit. 1 is the first of the litter born on that day. The rest of the analogous such as 070525HA2. for the 25th second. According to the ear tag on the birth year and month of age can be the most accurate to determine.

How long does a cicada grow

The life cycle of a cicada can be 1 year, 4 years, 12 years, 13 years, 17 years, and so on, depending on the region and the species, for example, in North America, it is 17 years, but in South America, it is 13 years, which is probably to avoid the mutual annexation and killing of the populations.

605 corn seed growing period is how many days?

Denghai 605 corn seed:

The variety meets the national standard for the validation of corn varieties, through the validation. Suitable for summer sowing in Shandong, Henan, south-central Hebei, northern Anhui, Shanxi Yuncheng area, as well as suitable areas in Inner Mongolia Autonomous Region, Shaanxi Province, Zhejiang Province, pay attention to the prevention and control of verruca black powdery mildew, brown spot disease, southern rust disease in the heavy areas with caution.

Variety Characteristics:

In the Huanghuaihai region seedling emergence to maturity 101 days, 1 day later than Zhengdan 958, need effective cumulative temperature of about 2550 ℃. Seedlings have purple leaf sheaths, green leaf blades, greenish-purple leaf margins, yellowish-green anthers, and light purple glumes. The plant is compact, with a height of 259 cm, a spike height of 99 cm, and a number of 19-20 leaves on the adult plant. The filaments are light purple, the fruit spikes are long and cylindrical, the spike length is 18 centimeters, the number of rows of spikes is 16 to 18 rows, the rachis is red, the grains are yellow, horse-tooth type, the weight of one hundred grains is 34.4 grams.

Inoculated by the Plant Protection Research Institute of Hebei Academy of Agriculture and Forestry, it is highly resistant to stem rot, moderately resistant to corn borer, susceptible to large spot disease, small spot disease, dwarf mosaic disease, and Campylobacter leaf spot disease, and highly susceptible to verrucose powdery mildew, brown spot disease, and southern rust.

Measured by the Cereal Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture (Beijing), the kernel capacity is 766 g/L, crude protein content is 9.35 %, crude fat content is 3.76 %, crude starch content is 73.40 %, and lysine content is 0.31%.

In 2008-2009, it participated in the regional trial of summer maize varieties in the Yellow Huaihai Sea, with a two-year average yield of 659.0 kg per mu, an increase of 5.3% over the control of Zhengdan 958. In 2009, it had an average yield of 614.9 kg per mu in the production trial, an increase of 5.5% over the control of Zhengdan 958.

Yield performance:

Performance of Inner Mongolia Autonomous Region District Trial: In 2008, the middle and late maturity group pre-test 6 points of yield increase, the average yield of 859.2 kg per mu, 6.3% more than the control Zhengdan 958; in 2009, the late maturity group of District Trial 6 points of yield increase, the average yield of 911.3 kg per mu, compared with the control Zhengdan 958 increased by 6.2%; in 2010, the late maturity group production test. In 2010, the production test of late-maturing group increased yield at all 6 points, with an average yield of 903.5kg per mu, which was 9.8% higher than that of control Zhengdan 958, and ranked the first. This variety has good adaptability and good stable yield. There is no obvious disease in the field.

In 2008, the governor of Shandong Province commanded the field of attack varieties, 15 acres of average yield of 1028.61 kg per mu. 2009 by the national maize breeding and cultivation experts composed of the acceptance group, the new super corn Deng Hai 605 high-yield field (8 acres) carried out a rigorous acceptance of the actual yield, the average yield of 1041.82 kg per mu. The average yield of Denghai 605 high-yield field in Shandong Province exceeded 1,000 kilograms per mu, and the average yield of two 100-mu demonstration fields reached 874.7 kilograms per mu. In 2010, the King of Grain Competition in Shandong Province had an acre yield of 980 kilograms.

Cultivation focus:

Cultivation in the middle fertility above the plot, the appropriate density of 4,000 to 4,500 plants per acre, pay attention to the prevention and control of verruca black powdery mildew, brown spot disease, southern rust disease in the heavy areas of caution.