First, prevent early death and early flowers
1. In the case of rapeseeds that have already been convulsed, they should be picked in time; in the case of rape that causes premature sowing due to sowing and premature sowing, rapeseed should be picked at a height of 30 cm or less.
2. Immediately after top-dressing and picking pods, timely application of nitrogen fertilizer, irrigation, and enhancement of vegetative growth of the plants should be pursued to reduce their reproductive growth. If it is a thin plant, it is more timely to topdress after picking.
Second, prevent lodging
Do a good job of cultivating cultivators in cultivating soil. After the beginning of spring, the vines shall be soaked in speed. During the period of green fruit, piling shall be used for supporting the fence around the field ridges. For the parts where the lodging in the middle is early, the ties should be straightened to reduce the loss.
Third, fertilizer and water management
1. The principle of fertilizing and fertilizing is to “promote, control, and supplementâ€, apply early, apply fertilizer, and apply boron fertilizer in a timely manner. At the bud stage, as the seedlings grow, the average mu application of urea is 10 to 15 kilograms, which increases the fullness of the pods.
2. Irrigation should be timely irrigated during convulsions, early flowers, full blooms, and pods.
IV. Pest Control
1. Disease Sclerotinia Sclerotinia: In the flowering period of rapeseed, it should be sprayed when the diseased strain of the leaf reaches more than 10% and the rate of the diseased stem is less than 1%. Use 40% sclerotium net wettable powder 1000 to 1500 times or 70% Thiophanate-methyl wettable powder 500 to 1000 times, 50% carbendazim powder can be controlled by spraying, combined with the removal of old yellow leaves. Prevention of white disease: spray 600 to 800 times chlorothalonil or 1000 times carbendazim solution at the beginning of the disease.
2. The prevention and control of early pests and diseases should be done to prevent early and prevent small pests. The prevention and control of locusts can be mainly controlled by 1000 to 1,200 times of dimethoate, 10 to 20 grams of aphid resistant, and 50 to 60 kilograms of mixed water.
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