Important links in winter management of pea

Pea is an important winter grain and vegetable crop. To grow pea well, we should pay attention to the following links: 1. Manage water and fertilizer well. Do not water before emergence, the vegetative growth period after emergence is mainly middle ploughing and weeding, properly watering, as long as it is not dry and cracked. The trailing varieties set up when the vine is 30 centimeters long. Pour a little water before the bud, but don't water it during the florescence. Holland bean has the ability of nitrogen fixation and does not need a lot of fertilizer, but most varieties have strong growth potential and high cultivation density, which generally need topdressing for 3 times, and apply compound fertilizer 15 kg per mu or 4000 kg of human feces and urine for the first time in the long-term application of compound fertilizer 15 kg per mu or 4000 kg of human feces and urine. 15 kg per mu of diammonium phosphate, 5 kg of potassium sulfate or potassium chloride, the effect of increasing yield is obvious. 2. Thinning leaves and picking hearts. When the plant grows to 15 nodes, the heart is removed, and the lower old leaves and yellow leaves are removed to improve ventilation and light transmission. In order to prevent falling flowers and pods, 30 mg / L anti-falling hormone spray can be used. 3. Scientific management. About 20 days after the emergence of Dutch beans, it has generally entered a cold winter, when the seedlings have a very strong cold resistance, but they should still pay attention to anti-freezing, and cold-resistant agents can be sprayed on the leaves; after the temperature picks up in spring, the plastic film can be removed, ploughing and loosening the soil in time, raise the ground temperature, topdressing available nitrogen fertilizer 70.08 kg, and irrigate small water in time after topdressing, but do not flood; spray "920" in flowering period to protect flowers and pods and increase yield. 4. Prevention and control of diseases and pests. Dutch beans are harmful to cabbage insects and mites during the whole growth period, which can be controlled by permethrin and triclofenac. The main diseases are virus disease and rust. Virus or virus K, strychnine and copper preparations are mainly used for prevention and control, and the medicine is administered every 3-7 days, depending on the severity of the disease. 5. Timely harvest. 7-10 days after flowering, the young pods of Dutch beans are ready and can be harvested and put on the market in time. The harvest should be 1-2 days earlier. It is better that the pods are clear and visible but not bulging and flat, and the pods with diseases, insects and broken pods are picked out. The pods treated with 20 mg / kg B solution can inhibit the degradation of chlorophyll and enhance the freshness and marketability.