Rape spring tube should pay attention to å•¥

After spring, rapeseed vegetative growth and reproductive growth are very strong, to seize the high yield of rapeseed, and strengthen the spring cultivation management is the key. According to the spring of this year, the cold air is more rainy and rainy, and the field management of rapeseed should pay attention to the following points:

I. Ditch drainage to prevent freezing snow. Spring rain is more, soil waterlogging affects the root physiological activity of rape, weakening the root function, resulting in dead seedlings, rotten yellow rape leaves and diseases and insect pests. To clear the ditch drainage, often dredge the ditch, waist ditch, car ditch, so that the ditch and ditch connected, heavy rain does not accumulate water, rain, water, dry, so that drainage is smooth, effectively root and prevent disease. At the same time, antifreeze work should be done in time according to the weather conditions, so as to reduce the damage of frozen snow and rain in the spring and even rainy weather.

Second, the use of moss fertilizer, make up the application of fertilizer. Brassica oleifera is the period with the highest amount of fertilizer, and the application time is usually after the initial height of 7-10 cm. On the bottom of the foot, Miaofei, wax and more fertilizer, rape grow stronger and lighter, per acre with 4-5 human waste and 1.5-2 kg of urea doused into the pouring; the other hand, can be reused, per acre with manure Urinary 10-15 plus urea 2.5-4 kg, 15-20 kg of superphosphate mixed with water pouring. During flowering, fertilizers are usually taken outside the roots. For normal growing fields, use 150 grams of potassium dihydrogen phosphate to add water to a 50-kilogram pen, spray; grow the field with 250 grams of urea plus 200 grams of potassium dihydrogen phosphate and mix with water and 75 kilograms of spray.

Third, prevention and treatment of pests. Due to abundant rainfall and high humidity in spring, rapeseeds are prone to diseases such as sclerotia, downy mildew, aphids and cabbage caterpillars. When controlling pests and diseases, first remove the old yellow leaves from the lower part to improve the conditions for ventilation and light transmission between the plants and control the occurrence of diseases and pests. Then use 50% carbendazim powder 150g plus 10% lanthanum powder 20g per acre. 3 packs 50 kg of watered spray, which can be combined with foliar spray.

Fourth, weeding and weeding. Spring rains, temperature rises, weeds grow fast, and soil is easy to compact. We must do 1-2 times of cultivating and weeding before weaving rape (which can be combined with a time of applying the moss fertilizer) to loosen the topsoil, promote root growth and control weeds.

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