Different rapeseed species winter tube measures vary
For different kinds of rapeseed, different winter measures should be taken: Transplanting rape fields. 1 Early Miao Miao. If the transplanted plots have been applied to the base fertilizer, Miaofei should be applied to the available fertilizer urea at a rate of about 5 kilograms per mu; if the base fertilizer is not applied, three elements of nitrogen, phosphorus and potassium fertilizers should be applied to 30--40 per mu. Kg, urea 3--5 kg, borax 1-1.5 kg. After fertilization, combined with cultivating loose soil, the soil was used to cover fertilizer around the roots of rapeseed. 2early soil, diligent cultivator. After rape live, it is necessary to loosen soil early, diligently cultivating, remove compaction, loosen the soil and raise the temperature of the soil. In combination with the cultivating loose soil, the roots should be properly cultivated with fine soil to reduce the leakage of wind-breaking seedlings and promote good root development. 3 control of pests and diseases. In warm winter, the temperature is relatively high, and the seedlings are susceptible to insect pests. In the case of rapes that are not pest-treated before transplanting, and rapes that are already infested with locusts, cabbage caterpillars, and vegetable pods, they must be sprayed and prevented in time. 4 winter fertilizer, early application of fertilizer. Waxy fertilizers have a warming effect on the soil and are generally dominated by slow-lasting farmyard fertilizers. Double-low conventional rapeseed or double-low hybrid rapeseed varieties can be applied early to apply fertilizer, that is, Lashichun, and they can usually be applied after the winter solstice. If the rapeseed at the end of the foot is full, the winter solstice seedlings will not be deferred and reddened. At this time, urea can be applied to 7.5 kg or 15 kg to 20 kg of nitrogen, phosphorus and potassium compound fertilizer per acre. Live rape field. 1 Check seedlings to make up for shortages. In case of seedlings, seedlings can be used to plant seedlings with soil transfer seedlings, and root water is poured in time after transplantation to strengthen management. 2 seedlings, Dingmiao. To master the seedlings at the true leaf stage of 2--3 leaves, draw the seedlings into a single seedling, and after 5 to 10 days, when the seedlings grow 4-4-5 leaves, remove the excess seedlings and seeds according to the scheduled spacing. Seedlings and weak seedlings. If the rapeseed is not set in time, it will quickly form tall seedlings, weak seedlings, and extremely poor resistance to stress. 3 cultivating loose soil, topdressing and raising seedlings. After fixing the seedlings in rapeseed, the seedlings shall be top-dressed in a timely manner to apply urea 10 to 15 kg per acre, and the land shall be dredged and the soil loosened. To the winter solstice around the solar terms also depends on seedlings to apply fertilizers and fertilizers. The specific practices are similar to the field management of transplanted rapeseeds. No-till transplanting rape field. 1 Early Miao Miao. Usually 1.5--2 kg of pure nitrogen per acre. For strong seedlings, basal fertilizer can be less or not applied; for small seedlings, growth potential differences, early application, and more facilities. Ammonium bicarbonate must be applied deeply, urea can be applied, and when it is dry, it must be fed with water, combined with drought and fertilization to increase fertilizer efficiency. 2 earthworm roots. There are many weeds in the rapeseed, and the soil is compacted, which is unfavorable for root development. In winter, cultivating and smashing the roots of sorghum should be performed twice: for the first time, after the ground ditch is dry, the soil should be crushed in time, and the stalks should be rammed into the roots of the vegetables to make the rows concave; the second time, organic fertilizers should be applied between the rows. Covered with gully, dry land and cotton paddy fields must also be ploughed in early and medium tillage. 3 Clean up the drainage system. No-till live rapeseed field. 1 Early Miao Miao. Generally, under the quick-release fertilizer, 1.52 kg of pure nitrogen is used per mu, and 2 wells are used to clean the drainage system. 3 control weeds. Herbicides are generally used to control grass weeds used Ganoderma lucidum, fine grass weeds grams; control broad-leaved weeds Gao Teke; prevention and treatment of grass weeds and broad-leaved weeds with Venus, food Wang Xing and other agents. China Agricultural Network Editor