After the beginning of spring, rape must be prevented from lodging
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First, the application of manure after the application of science Shilei Fertilizer is the key to promoting the long-term stability of rapeseed. The amount of fertilizer should be appropriate, generally accounting for about 30% of the total amount of fertilizer. Before the convulsions, that is, at the end of February or early March, about 1,000 kilograms of cooked manure or urea or urea of ​​7.5 to 10 kg per acre is applied. But to prevent excessive manure, growth cover, lodging disease. At the same time, 0.2% borax aqueous solution 50 kg can be sprayed per acre to increase the yield of rapeseed. Second, timely irrigation and drainage of rape after the beginning of spring flowering needs more water, drought, timely irrigation, to ensure the demand for water. However, after the beginning of spring, it is rainy, the soil moisture is high, and the humidity in the field is large, which often induces the occurrence and harm of Sclerotinia sclerotiorum. Therefore, it is necessary to clean up the ditch river in time after the beginning of spring to ensure that the ditch and the river communicate and prevent the stains after the rain. Third, the cultivator loose soil, cultivate the roots of the roots after the spring, seize the favorable opportunity before the closure of the line, to carry out cultivating loose soil; remove weeds, reduce the occurrence of pests and diseases; increase the temperature, to prevent late spring attacks. Timely rooting of the roots enhances lodging resistance and accelerates field drainage. Fourth, take the initiative to fight against pests and diseases in rapeseed convulsions and early flowering period, with 50% carbendazim per acre 150 grams, 50 kilograms of water spray control Sclerotinia; with speed killing Ding 8 ~ 10 grams of water 30 kg spraying prevention aphid. Disease prevention and pest control, increase grain weight gain, this is the main way to prevent lodging. Fifth, spraying regulators Spraying growth regulators in the flood season, with 15% paclobutrazol per acre 30 grams, 25 to 30 kg of water evenly spray. It can increase the plant's resilience and prevent late lodging.