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Post-Snow Cultivation Techniques for Spring Flowers in Zhejiang Province
On March 12th, Zhejiang was affected by heavy snowstorms with low-temperature disasters. The extreme air temperature in the mountainous areas was -4°C to -6°C, which adversely affected the growth of spring crops. Among them, rapeseed was in the bolting period, some of the early maturing plots had been in the initial stage of flowering, the plant moss and heart parts and new leaves were tender, and suffered frostbite under extreme temperature conditions, which had a great impact on the yield. All localities must timely strengthen the field training of spring crops, especially rape after the disaster. 1. Ditch drainage, reduce the humidity in the field, prevent waterlogging, and improve crop resistance. 2, timely outside the root dressing, can use 100-150 grams of potassium dihydrogen phosphate watered 40-50 kg of foliar spray, promote plant recovery. At the same time, rapeseed was applied with boron fertilizer at the early flowering stage in order to increase the rate of scab and grain plumpness, and 200 g of borax was sprayed on the mu. 3, timely prevention and control of pests and diseases. After frostbite is planted, the stress resistance is reduced, and it is easy to be harmed by pests and diseases. It is necessary to do a good job in the prevention and control of pests and diseases such as Sclerotinia sclerotiorum, wheat scab, and wheat aphids. Sclerotinia sclerotiorum mu is sprayed with 50% carbendazim 100 g or 70% thiophanates 75 g water; wheat scab 50% carbendazim WP 100 g or thiophanate WP 75 g Water 40 kg spray; wheat aphid acres with 15 grams of 10% imidacloprid wettable powder spray.