How to cultivate water chestnut for high yield

Water chestnut (pinyin: B í qi English: water chestnut scientific name: Eleocharis dulcis), also known as horseshoe, water chestnut, peony, mackerel, black taro, bodhi chestnut, pear, is a kind of water chestnut of Cyperaceae. Cyperaceae water chestnut is a shallow perennial root herb, which uses bulbs as vegetables. Water chestnut has purple-black skin, white meat, sweet and juicy taste, crisp and delicious, and has the reputation of "underground snow pear". Northerners call it "Jiangnan ginseng". It can be eaten raw as fruit and vegetables as well. It is a popular product in season.

Water chestnut taste sweet and crisp, rich in nutrition, containing protein, fat, crude fiber, carotene, vitamin B, vitamin C, iron, calcium and carbohydrates. Can be used for cooking and can be used to make starch. Guangdong snack horseshoe cake is made of water chestnut starch called "horseshoe powder". Its fiber is spherical, easy to absorb sundries, and has a good intestinal cleaning function. If you want to eat raw, you must thoroughly remove the bud eyes and skin, otherwise it is easy to lead to ginger eggs into the intestinal parasite.

How can water chestnut be cultivated for high yield?

Weeding and protecting seedlings

10-12 days after transplanting, pull out the weeds in the field, press the exposed root pile of the previous crop into the mud, and flatten the field. When the seedlings grew in a basin, the bulbs were found to be exposed and pressed into the mud with their hands. Plants with yellowing leaves and rotten corms should be pulled out as soon as possible. During the period from the End of Heat to White Dew, some of the thin and weak seedlings can be pulled out in dense places to facilitate ventilation and light transmission. Timely topdressing

10-12 days after transplanting, combined with weeding and topdressing, 57kg of urea or 200kg of human feces and urine were applied per mu. According to the condition of the seedling, the second fertilizer is applied, the strong one is less topdressing, and the weak one is more. Generally, 400 kilograms of human feces and urine or 7 kilograms of urea are applied per mu. If the plants from White Dew to the Autumn Equinox were not closed, 5kg urea per mu was applied 7 days after the second fertilizer application. Scientific water management

Stable seedlings in shallow water layer were irrigated in the field during transplanting, and the water layer was deepened gradually after living plants. the water layer was 2-3 cm deep at tillering stage and 5-6 cm at the Autumn Equinox-Cold Dew corm expansion stage. Hot and dry weather properly deepen the water layer, in case of heavy rain timely drainage to the normal depth. The Beginning of Winter drained the field water before and after the corm was ripe for harvest. For fields with excessive application of organic fertilizer, rotten soil and high groundwater level, pay attention to drainage and open field, so as to make the soil solid, so as to promote root growth and bulb expansion. Prevention and control of diseases and pests

The main diseases and insect pests of water chestnut are chestnut blast, yellow dwarf disease, water chestnut borer and aphids. To prevent and cure shepherd's plague, spray 50% carbendazim 600 × 800 times or 70% methyl topiramate 1000 times 1500 times at the initial stage of the disease. The prevention and control of yellow dwarf disease mainly depends on accelerating budding, raising seedlings and avoiding damage to the mother plant during transplanting. To control water chestnut borer, spray 5% fipronil 1500 times liquid from hatching period to 3rd instar period, or use 25% insecticidal double 200ml per mu, or 70% insecticidal sheet 35g, add 60kg water spray. Keep 3 cm water layer in the field during pesticide application to prevent series irrigation. When aphid damage was found, 10% aphid lice net 2000 × 2500 liquid was sprayed to control it.