Mung bean.

Beans are a year's raw herbs. A kind of bean crop with both grain, vegetables and green manure. Chromosome number 2n s 22. Native to Myanmar, India. Some scholars think that China is its origin. Mainly distributed in China, followed by India, Iran and Southeast Asian countries, Africa, Europe, the Americas have a small amount of cultivation. China's main production areas are concentrated in the Yellow River, Huaihe River Basin Plains, Henan, Hebei, Shandong, Anhui and other provinces, Jiangsu, Sichuan, Shanxi, Shaanxi, Hubei, Guizhou and other provinces.

the main root is underdeveloped, the side root is slender. Stem height 30 to 100 cm, there are three types of erect, half cranberry and cranberry. The whole plant is hairy. Sub-leaf unearthed, 2 pieces of newborn leaves, wide cape needle-shaped. Three compound leaves, small leaves full edge or shallow cracking. Flower terrier first born butterfly-shaped flowers, yellow. General knot 3 to 4, mature black or brown, slender, cylinder-shaped, outer short hair. Seeds are green, yellow, brown, black, the seed skin has a gloss (bright green) and no gloss two.

green beans are short-term sun crops, but the general varieties are insensitive to lighting reactions. The germination temperature is 8 to 10 degrees C. The fertility period is short, 60 to 90 days, the fertility period requires a higher temperature, the maturation period requires a clear weather
dry
. Closed pollination. Drought-tolerant, barren, water-afraid, neutral lime allmeal and loam suitable, but also resistant to microacid, micro-alkali soil.

can be cultivated in the tropics from warmth to the tropics. Can be singled out, but also often with corn, sorghum, millet, sweet potatoes, cotton and so on between or set. Sowing is long, spring and summer sowing can be. Spring sowing in northern China from late April to May, summer sowing from June to July, spring sowing from March to April in the south, and summer sowing from June to August. The reproductive period is about 90 days. Multi-line strip broadcast, can also be broadcast in caves. Poor environmental conditions are often prone to the production of thick skin, poor water absorption, not easy to germinate hard, its hard rate is slightly higher than other edible beans. The seed skin can be slightly worn before seeding to increase germination rate. The amount of seeding depends on the cultivation method, 1.5 to 2 kg per acre alone, and can be appropriately reduced when planting between sets. If there is sufficient amount of potassium phosphate fertilizer and the appropriate amount of water during flowering period, the yield can be increased significantly. Soybean ripening period is not consistent, small area cultivation, can be harvested multiple times; Seeds do not sleep period, when ripe to harvest in time, so as not to encounter rain germination. The main diseases are leaf spot disease, white powder disease and so on. The main pest is mung bean elephant, serious harm, after harvest should be immediately dried and fumigation with medicine.Mung bean contains about 23%
protein
and rich
vitamin
B, high nutritional value, can be used as a staple food, pastries, can also be used to make bean sand or processed into fans and other food and wine, high-quality Longkou fans and music wine "ming green liquid" that is, green beans as raw materials. Green bean sprouts are rich in vitaminSC and P and are high-quality vegetables. The leaves are lush and perishable, and can be used as good green manure. Sub-solid, flowers, skin can be into the medicine, internal medicine can clear heat detoxification, external application can cure sores and wounds.