Timely topdressing fertilizer in the early spring can remedy the shortage of winter rapeseed, promote more branches and early buds. In particular, the shortage of basal fertilizer and rapeseeds that have not been applied with wax can be the key to seizing high yields in the early spring. In general, 15 to 20 kg of ammonium bicarbonate or 6 to 7 kg of urea is used to remove manure water per mu. Steady application of manure was applied at the beginning of rape buds. For fields with strong soil fertility, large amount of fertilizers applied in the early stage, and long growing trend, there should be little or no application of fertilizer to prevent late growth and late maturity. For poor soil fertility, insufficient base fertilizer and seedling fertilizer, weak growth, must pay attention to the application of manure, generally 15 kg of ammonium per acre or 5 to 6 kg of urea, supplemented with 15~20 human urine or biogas slurry. Topdressing. The increase of potash fertilizer in spring with potash fertilizer can enhance resistance to lodging, disease resistance, cold resistance and stain resistance. Especially for potassium-deficient soils, sandy fields, and hybrid rice fields, the application of potash fertilizer in spring will have a significant effect on increasing production. The application of potash fertilizer in rapeseed usually takes place from February to March. 150-200 kg of plant ash is used per acre, or 15 kg of potassium chloride is applied. Applying appropriate amounts of fertilizers and fertilizers to make fertilizer can make more rapeseed, increase grain weight gain. Fertilizers are generally sprayed on the leaves. When the beak is 50-60 cm in height, the weather is selected to be sprayed on sunny days without wind. For poor growth, add 300 grams of urea mixed spray to the prepared potassium dihydrogen phosphate solution. Boron spray boron deficiency will cause rape to "flower but not real" phenomenon, the application of boron fertilizer can play a preventive role, which is particularly important for hybrid rapeseed and high quality rapeseed. Boron rape after spring, generally in the flood season and the early flowering period of each spray once, each with borax 50 ~ 100 grams, first dissolved with hot water, and then against the water 50 ~ 60 kg spray can be. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Yankauer Tip,Yankauer Suction Tip,Suction Tip Yankauer,Surgical Yankauer Suction Tip ShaoXing SurgeCare Medical Products Co., Ltd. , https://www.sxsurgecaremedical.com