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Fertilizing techniques in rape fields
Apply base fertilizer. It is the basis of high yield of rapeseed and should account for about 60% of the total lifetime. To achieve a production index of about 250 kilograms per mu, for medium-fertility plots, when transplanting, generally 2000-3000 kilograms of high-quality organic fertilizer, 50-60 kilograms of cake fertilizer, 8-10 kilograms of fertilizer-reduced nitrogen, and phosphorus 5- 6 kg, 3-5 kg ​​of potassium, 0.5-1 kg of borax. Early Miao Miao. Appropriate early application of seedling fertilizer, should account for 10% -15% of the total application amount, the actual amount of the actual use of mu 500 kg of manure, plus 5-7 kg of urea or ammonium bicarbonate 10-15 kg. When fertilizing chemical fertilizers, it is best to apply fertilizer to clean water. Apply wax fertilizer. The wax-fertilizer is mainly controlled by slow-release fertilizers for warming and warming, 3000-4000 kg of soil-based miscellaneous fertilizer, 20 kg of compound fertilizer, and 300-500 kg of straw. Before the fertilization, the crops shall be ploughed and weeded. After the fertilization, the straw shall be covered, and then the roots shall be shovelled. Reapply manure. Fertilizer is a kind of fertilizer with higher fertilization efficiency in rapeseed. It usually accounts for about 30% of the total application. At the same time, it should be done to: see the seedlings fertilize, the large body of the seedlings, the yellowing power, the soil lack of stamina. Reuse; Second, to use nitrogen and potassium fertilizers, for the autumn and winter strong seedlings field block, in the end of January and early February, mu application of 15-20 kilograms of urea, potassium chloride 5-6 kilograms; Block, fertilizer applied twice in a row is appropriate, and one-time application of manure should be 5-7 days ahead of time, the second time interval 10-15 days, the amount of slightly more. Qiao applied fertilizer. Leaching fertilizer can make up for the lack of fertility in the middle and late period to prevent off force. Should be based on seedling conditions, soil strength, etc., for the post-spring stable and lack of fertility fields, Mushi urea 4-7 kg, or ammonium sulfate 8-10 kg, while coping with weak groups, individual early application; good growth It is not appropriate to apply the stamina to field blocks. Will apply boron fertilizer. Brassica napus is a boron-tolerant crop, and hybrid rape is more sensitive to boron. Boron fertilizer is generally more economical and efficient with basal fertilizer and sprayer. When the base fertilizer is applied, 0.5 kg per mu is mixed with the base fertilizer. When the sprayed leaves are selected, the borax is 150 grams per mu and the water is 50-75 kilograms. Spray twice. Apply leaf fertilizer. After the flowering of rapeseed, the root activity decreased, and the application of leaf fertilizer is an effective method to prolong the lifespan of leaves and stems, increase the grain weight and increase the yield. Generally, each use of magnesium dihydrogen phosphate 150 grams, urea 0.5 kilograms, 50-60 kilograms of water, and even spray 2-3 times, can also be combined with pest control pesticide application.