Why does bamboo die after flowering? It turns out that when bamboo blooms, it consumes almost all the nutrients in the plant. In addition, after the bamboo leaves fall off, the nutrients needed by plants can not be supplied, and they are in a state of physiological dehydration for a long time, making it difficult to survive.
Bamboo is often not a flowering plant, but clusters, and even many bamboo forests in one area die at the same time. As we know, the underground part of bamboo is its trunk, while the aboveground part is just some branches. Therefore, there are many bamboo stems on the ground, but the underground parts are criss-crossing and nutrient exchange. In this way, after the underground system reaches the mature stage, their actions will of course be unified.
The reason of bamboo flowering is closely related to local climate, soil and other environmental conditions, and continuous drought will lead to bamboo flowering. Bamboo flowering will bring losses to bamboo forest production. A few years ago, bamboo bloomed in some areas in the south, which made it difficult for giant pandas to eat.
Bamboo flowering is not common, and the bamboo fruit produced after flowering is rare. During the period of 1958, in the bamboo specimen forest on the campus of Sun Yat-sen University, there was a plant called Elephant Trunk Bamboo, which produced huge berries. This is the first discovery of bamboo fruit in China.
mao bamboo
Alias Phyllostachys pubescens, Phyllostachys pubescens (Bamboo Spectrum by Dai Kai), Phyllostachys pubescens in the south of the Yangtze River (Garden History and Flora Collection in Runan), Meng Zongzhu (Pingyang, Zhejiang, Japan) and Phyllostachys pubescens (Sichuan, Hunan, Jiangxi, Guangxi, Hubei and Guizhou).
1. Bamboo with morphological characteristics, more than 20 meters high, 8- 10 cm in diameter, the largest bamboo can reach more than 16 cm, with flat stems and protruding reeds. The new pole is green, densely covered with fine hair and white powder. Culm sheaths are thick and leathery, with dark brown spots and brown-purple bristles on the back. The auricle is very developed, sickle-shaped, with thick long curly hair on the edge. The tip of the tongue is convex with dense black bristles. Leaf sheaths lanceolate. Branchlets have 2-8 leaves at the top. Bamboo shoots appear early. Bamboo shoots formed before winter are "winter bamboo shoots", and bamboo shoots produced before and after Qingming are "bamboo shoots".
2. The distribution habit of Phyllostachys pubescens is mainly produced in subtropical areas. To the south of the Yangtze River basin, below 1 1,000m above sea level, a large area of pure forest is often formed between hillsides and valleys, so it is also called "Bamboo in the South of the Yangtze River". Suitable for warm and humid valleys with loose and fertile soil and leeward. It does not grow well on poorly drained clay, shallow topsoil or gravel soil.
Third, the cultivation management usually adopts transplanting mother bamboo for afforestation, and can also adopt whip tip propagation. Loose soil can be cultivated around the bamboo forest, and the bamboo forest area can be expanded by whipping. In recent years, the popularization of seed breeding has also made considerable achievements. In the cutting and utilization of Phyllostachys pubescens forest, bamboo is generally erected before 3 degrees (2 years 1 degree), and bamboo is erected after cutting to 4 degrees. Gradually, some people say that "three to four can't save seven." Tending and management of bamboo forests can be carried out in the rainy season every year, weeding and removing impurities (called splitting mountains in Zhejiang), turning into the soil to rot and increasing fertility. The forest needs to be covered with soil to avoid exposing the root of the whip and make bamboo shoots.
Fourth, watch the characteristic bamboo tall and straight, with an open mind. Its bamboo shoots are big and thick, shaped like a cat's head. There are whip bamboo shoots, winter bamboo shoots and spring bamboo shoots in summer and autumn. The overall landscape of bamboo poles, bamboo shoots and bamboo forests has a unique ornamental effect.
5. Gardening configuration is not suitable for planting in small gardens. Generally planted in valleys or large gardens. Yun Qi Bamboo Trail in Hangzhou West Lake is a bamboo garden with a quiet path, like walking in a painting. Some scenic forests in nature parks, such as pure bamboo forests or coniferous forests or mixed forests of broad-leaved trees, are quiet and pleasant. Large-scale planting has windproof and many environmental protection functions.
6. Other Phyllostachys pubescens are also excellent bamboo species for timber and bamboo shoots, and the economic benefits of garden planting are also considerable.
Will bamboo blossom? What does it mean to blossom? Phyllostachys pubescens will bloom. But generally do not bloom, but use rhizomes (bamboo whips) to breed offspring. Once its growth environment changes so much that it can no longer survive, it will reproduce its offspring through flowering and fruiting, and the old branches will gradually die after flowering and fruiting. Therefore, once the bamboo blooms, it means that it is about to die. At this time, if it is carefully managed and necessary measures are taken, it is still possible to prevent it from dying.
What does the flowering of Phyllostachys pubescens represent? After the bamboo bloomed, the pillar died. Some people say this is a sign of death. Different kinds of bamboo have different flowering periods. Some bamboos take more than ten years or decades to blossom. For example, it takes about 30 years for Dendrocalamus latiflorus and bamboos, 32 years for Dendrocalamus latiflorus and 80 years for some bamboo varieties. Some even take a hundred years to blossom, such as Zhu Gui, which takes 120 years to blossom. Of course, there are a few exceptions, such as Phyllostachys pubescens, which bloom once a year or so; On the other hand, Tang Zhu and Xiaoshunzhu bloom irregularly. It is precisely because bamboo is rare to bloom, after flowering, the green leaves wither, branches wither and die in batches, so some superstitious people mistakenly think that bamboo flowering is an "ominous sign", which makes people feel mysterious and has various questions about this natural phenomenon.
When does bamboo blossom? When the growth environment of Phyllostachys pubescens is too harsh or the bamboo is too old, it may bloom. Once flowering, bamboo will die one after another.
Different kinds of bamboo have different flowering periods.
(1) Some bamboos take more than ten years or decades to blossom, such as Dendrocalamus latiflorus and Phyllostachys fragrans, and it takes about 30 years to blossom;
(2) It takes 32 years for Dendrocalamus latiflorus and Dendrocalamus latiflorus to bloom, and more than 80 years for some bamboo species to bloom;
(3) Some even take up to a hundred years to blossom, such as Phyllostachys pubescens, which takes 120 years to blossom.
(4) Of course, there are a few exceptions, such as Phyllostachys pubescens and Phyllostachys pubescens, which bloom once a year or so; On the other hand, Tang Zhu and Xiaoshunzhu bloom irregularly.
Phyllostachys pubescens will dry up and die when it blooms. Who knows what to do with it? Symptom, pathology and countermeasures of bamboo flowering;
1. Symptoms: When the bamboo is about to bloom, the bamboo leaves turn yellow and the old leaves fall off. The flower bud appears at the top of the twig, and the spikelet floral axis grows on the flower bud. Each spikelet will have 2- several flowers, but it will become a spike. At flowering stage, the yellow floret male spike is visible to the naked eye, hanging outside the spikelet. The shape of flower branches is obviously different from that of healthy branches.
Pathological reasons: Bamboo flowering is caused by nematodes, fungi, pests and parasites.
Third, take corresponding measures:
(1), dig out flowering bamboo plants. Flowering will consume a lot of nutrients, which is extremely unfavorable to the growth of bamboo plants, so it is necessary to dig out the flowering bamboo plants in time. Digging time should be in May-June, at the same time, cooperate with loosening soil and fertilizing, and dig together with whips, leaving no hidden dangers. This will inhibit the flowering and expansion of bamboo gardens. If a few small bamboos bloom, they can be supported at a place 1 m above the ground, and then all bamboo joints can be spread with thin iron bars. Concentrated solution made of human excrement or urea is added into bamboo cavity, and the incision is sealed with yellow mud to prevent new bamboo from blooming. If the small bamboo blooms, it can be cut down in different years in strips or blocks, and the woodland can be reclaimed, and the old whip and bamboo head can be removed, and the new whip can be left in the soil, and chemical fertilizer or base fertilizer or new soil can be added to restore the bamboo forest as soon as possible.
(2) Carefully dig bamboo shoots to prevent whipping and reduce bleeding. It is necessary to change the hoe to dig bamboo shoots with bamboo shoots, and at the same time use the method of fertilizing bamboo shoots to supplement the consumption of nutrients.
(3) Popularizing scientific fertilization and formula fertilization. According to the relationship between bamboo shoot yield and nutrient consumption, the ratio of nitrogen, phosphorus and potassium should be 5: 1: 2, and the amount of nitrogen fertilizer should be increased. Clever application of phosphate fertilizer can increase the output of bamboo shoots and curb the decline of bamboo forests. Fertilization time should be closely combined with scarification and mulching, and it should be applied 3-4 times a year, that is, long whip fertilizer should be applied in May-June, germination fertilizer should be applied in September, and pregnant bamboo shoot fertilizer should be applied in 165438+ 10. Half a month before bamboo shoots appear, the normal time is 65438+1the end of October and the beginning of February. If the bamboo garden is covered, water it at the same time before covering. Some organic fertilizers and biological fertilizers can be added where conditions permit.
(4) Pay attention to water management: Bamboo forests need convenient water sources and good drainage, and the two should complement each other. A large amount of water should be ensured during the beating period, bamboo shoot pregnancy period, long bamboo shoot period and bamboo shoot incubation period, so that bamboo can thrive.
(5) Pest control: Prevention is the key to pest control. Once pests and diseases are found, they should be put out in the bud in time. In addition, the diseased bamboo and old bamboo should be thinned in time to make the bamboo forest structure reasonable, healthy, young, energetic and vital, so as to prolong the maturity cycle of bamboo.
The above is copied online. I think the main reason why bamboo blooms is: 1. Natural physiological cycle. 2. Feedback caused by external factors such as pests and diseases, drought, soil hardening, and weeds competing for nutrients. Bamboo flowering is common in a small area, but rare in a large area. It is said that bamboo flowering is contagious (similar to pheromones), and both the flowering bamboo pole and the bamboo whip will die, so the flowering plants and the underground whip must be dug up as soon as possible. But if it blooms in a large area, it can only be reintroduced and planted from other places.
Sodium hydroxide can make bamboo blossom. Yes Sodium hydroxide, commonly known as caustic soda, is white crystal, soluble in water and strongly alkaline. The life cycle of Phyllostachys pubescens is about 60 years. Under normal circumstances, bamboo shoots grow and reproduce from underground bamboo whips, and only when she is old or unable to survive in harsh living conditions will she blossom and bear fruit, which is why we rarely see Phyllostachys pubescens blossom. The place where Phyllostachys pubescens grows is sprinkled with sodium hydroxide, which makes the land strong alkaline and corrodes bamboo shoots, making Phyllostachys pubescens unable to grow. In order to reproduce, Phyllostachys pubescens has to use the last nutrients in life to blossom and bear fruit in order to maintain its race. So sodium hydroxide causes bamboo to die after flowering.
Can bamboo flowers soak in wine? Of course.
Bitter gourd is native to tropical Asia, including India and Southeast Asia, and is a common local melon vegetable. Bitter gourd is also a favorite vegetable of China people, ranking 2 1 in the vegetable intake list of Taiwan Province Province, exceeding the consumption of leeks, tomatoes, onions and green bamboo shoots. The nutritional characteristics of bitter gourd are low in calories and rich in potassium, vitamin C and folic acid. Bitter gourd has a low calorie, only 65,438+06 calories per 65,438+000 grams, mainly from carbohydrates, almost no fat and protein, so it has great flexibility in cooking. The hollowing out of bitter gourd in Taiwan Province cuisine, the filling of minced meat, or cooling bitter gourd with various sauces all have the significance of regulating the intake of meat and oil, avoiding eating a lot of meat or reducing oil absorption. Bitter gourd is rich in potassium and vitamin C? Every100g can provide about19mg, which is equal to one third of the daily recommended amount? And folic acid? There are about 63 micrograms per100g, which is equal to one sixth of the recommended amount? Generally speaking, it is helpful to avoid hypertension, reduce blood lipid oxidation, reduce blood homocysteine concentration and prevent cardiovascular diseases. The fruit and vegetable juice made of fresh bitter gourd is far more nutritious than apple juice, and it is a healthy drink worth popularizing. Tainan Agricultural Improvement Farm also cultivated a kind of wild bitter gourd with dark green color. The content of vitamin C per100g is as high as 87 mg and carotene is as high as 680 μ g, which is probably rare because of low yield. Orientals have always believed that bitter gourd has a special health care function, Indians believe that bitter gourd can lower blood sugar, while China people believe that bitter gourd is a cold food, which can reduce fire, reduce swelling, clear heat and relieve summer heat. There has been some scientific evidence of these effects recently. Studies have pointed out that bitter gourd may contain ingredients that promote insulin secretion, help control blood sugar and inhibit lipolysis; There is also a unique protein, which has antiviral effect and so on. According to the research commissioned by the Department of Health, Professor Huang Qingzhen from the Department of Agricultural Chemistry of National Taiwan University, taking the macrophage strain as the research model, this cell will secrete a large amount of prostaglandin pge2 when receiving immune components. Pge2 _ 2 _ 2 is the key component of inflammatory reaction. When it is produced in large quantities, it is related to severe inflammatory symptoms, and when it is reduced, it will help to alleviate inflammatory symptoms. Adding bitter gourd juice to macrophages can reduce the production of pge2; Extracting bitter gourd juice residue with organic solvent and adding the extract to macrophages can also reduce the production of pge2. This result confirms that bitter gourd does have anti-inflammatory components. Bitter gourd also has anticancer components. In the study, the chemical * * * was used to produce breast cancer in mice. If you feed bitter gourd before * * *, the tumor can shrink. When smearing chemicals on the skin of mice leads to the formation of * * * tumors, the number of * * * tumors can be reduced if the affected areas are smeared continuously before and after smearing drugs. Feeding bitter gourd extract to rats can reduce the carcinogenesis of large intestine cells induced by chemicals, which shows that it has the potential to prevent colorectal cancer. The anticancer effect of bitter gourd may be related to the regulation of liver enzymes. Chemicals in the environment or ingredients contained in the diet enter the human body and are sent to the liver through blood, which will be metabolized and transformed by the detoxification enzyme system of the liver. The detoxification enzyme system of liver and stomach includes two reactions. The first kind of reaction is carried out by a group of cytochrome cyp450, which can oxidize nonpolar components, increase their water solubility and help them excrete. But the first kind of reaction also has side effects, because the products of the reaction may be toxic or carcinogenic, which increases the risk of injury, so the consequences of enhancing the first kind of reaction can be said to be mixed. The second kind of reaction is conjugation, which aims to further metabolize the products of the first kind of reaction. Sulfate, glucuronic acid, amino acids, glutathione and other components in liver cells are conjugated with the products of the first kind of reaction, which can completely remove the toxicity of the first kind of products, and the generated new products are more water-soluble and more conducive to the excretion of renal sacs. The anticancer components in bitter gourd can inhibit the first detoxification reaction and enhance the second detoxification reaction at the same time. Therefore, on the one hand, the toxicity can be quickly eliminated, and on the other hand, the accumulation of toxic components can be avoided. Generally speaking, good medicine tastes bitter and makes sense. The health care function of bitter gourd may be more than what is known at present. In addition to the known nutritional components, the effective components also include protein, flavonoids and various organic components, which need to be identified and tested by researchers. Because the identification of effective components is not complete, and the report points out that a large number of extraction errors are harmful to cells, it is more suitable for bitter gourd to be cooked with fresh vegetables or juiced for oral use or external use, and it is not appropriate to rashly use extracted components or capsule buccal tablets. Supplementary informant 2009-07-31kloc-0/3: 33 Bitter gourd is a good medicine. Bitter gourd has roots, stems, leaves, flowers, fruits and seeds used as medicine. It is cold in nature and bitter in taste. Entering the spleen and stomach meridian, clearing away heat and relieving summer heat, improving eyesight and detoxifying. According to the "Resting Diet Spectrum", bitter gourd "has bitter taste, cold and heat, clear eyes and clear heart, nourish blood and soften liver when ripe, strengthen spleen and tonify kidney". "Life" records that bitter gourd can "clear away heat and relieve summer heat, eliminate fatigue, clear heart and improve eyesight, and invigorate qi and strengthen yang". "Compendium of Materia Medica" records bitter gourd's "clearing heart and improving eyesight, benefiting qi and reducing fever".
Bitter gourd has the functions of lowering blood sugar and preventing and treating cancer. Bitter gourd is a kind of bitter and cold product, which contains momordicoside, momordicoside and so on. According to modern pharmacological experiments, bitter gourd has the function of lowering blood sugar, which is considered to be because bitter gourd contains an insulin-like substance, which is stronger than the existing hypoglycemic drug "metsulfuron-methyl", so bitter gourd is an ideal health food for diabetic patients. Bitter gourd has broad prospects in the prevention and treatment of cancer. In foreign countries, scientists injected lipoproteins in bitter gourd into mice with lymphoma, and the survival time of mice was prolonged, indicating that lipoproteins in bitter gourd can improve cellular immune function. Therefore, scientists predict that bitter gourd may become a new drug to treat cancer.
Bitter gourd is rich in nutrition, and the ascorbic acid content in melons is outstanding, which is 14 times that of cucumber, 5 times that of wax gourd and 7 times that of tomato. According to the data of nutritional analysis, every100g of the edible part of bitter gourd contains 84g of water, 0.9g of protein, 0.2g of fat, 3.2g of carbohydrate, 0.6g of inorganic salt, 1. 1 g of crude fiber, 75.3kJ calorie and 0.08mg of vitamins A and B/kloc-. Momordica charantia fruit contains momordicoside, as well as glutamic acid, alanine, phenylalanine, proline and citrulline. The seeds and leaves of Momordica charantia contain a lot of momordicoside.
Bitter gourd is named because of its special bitter taste. There are many different names in different places, such as melon, golden litchi, grape, frog, red girl, cold melon, gentleman's dish and so on. The "gall" in these names means that there are many irregular tumor-like protrusions on the surface of bitter gourd, and the fruit shape is mostly rotary fruit and oblong cone or short cone. The tender fruit is dark green or light green. Calling bitter gourd a "red girl" may mean that with the increase of physiological maturity, the epidermis turns from green to white and gradually turns yellow to red. When the fruit is ripe and red, the top is easy to crack, revealing blood-red pulp, which is wrapped with seeds, generally 20-50 per melon. Judging from the main function of bitter gourd is to clear away heat and detoxify, it seems more appropriate to call it "cold melon"
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Is bamboo divided into male and female? number
Phyllostachys pubescens is male and female!
As long as you dig one
Come and plant it at will.
Can take root and sprout, and continue the offspring.