How to apply base fertilizer to rapeseed
Fertilizer production requires 100 kg of rapeseed to require 8.8 to 11.3 kg of nitrogen, 1.3 to 1.7 kg of phosphorus, and 7.1 to 10.5 kg of potassium. At a certain production level, producing the same weight of the product, the need for nitrogen, phosphorus, and potassium of rapeseed is 3 to 5 times that of rice, wheat, and corn. The demand for available boron from rapeseed is about 5 times higher than that of other crops. Boron fertilizer should be given special attention in production.
Basal fertilizer should be dominated by organic fertilizer and insoluble mineral phosphate fertilizer, combined with a small amount of nitrogen fertilizer. Organic manure is mainly livestock manure, miscellaneous fertilizer, pond mud, and cake fertilizer. The dosage depends on the quality of the fertilizer, generally 3000-5000 kg per mu, and applying 5-7. 5 kg of nitrogen fertilizer (11-18 kg of urea or 25-27 kg of ammonium sulfate) and 20-30 kg of superphosphate And potassium chloride 5 ~ 10 kg. In sulphur-deficient soils, applying 20-30 kg of superphosphate or 2 kg of sulfur powder as base fertilizer per acre can prevent rapeseed sulfur deficiency. In soils with severe boron deficiency, 0.5 kg of borax should be added as base fertilizer (if the soil is seriously deficient in zinc, 1 to 2 kg of zinc sulfate can be added as base fertilizer).
Phosphorus and potash fertilizers should be used as fertilizers for seed fertilizers. Superphosphate, potassium sulfate, dung, slag, grass and wood ash are commonly used in production, and animal manure and human waste are also used as seed fertilizers. When calcium superphosphate is used as a seed fertilizer alone, fine soil should be mixed and mixed with the seeds. When sowing, should be made into granular fertilizer, or nitrogen and phosphorus, nitrogen, phosphorus, potassium, phosphorus and potassium composite grain fertilizer. Boron-depleted soil can be added with 0.5 kg borax or boric acid per acre if no boron fertilizer is used as a base fertilizer.
Transplanting rapeseed bed fertilizer application of base fertilizer. In general, lean areas, paddy soils, clays and sandy soils are poorly constructed and should be fertilized as appropriate. Per-mu seedbeds use more than 2000-3,000 kilograms of manure as surface fertilizer, combined with soil preparation applied to the topsoil. In some high-yield canteen areas, 25 to 30 kg of superphosphate and 5 to 6 kg of potassium chloride are used to spread the soil surface before sowing and mixed with the topsoil. After sowing, 1500~ 2000 kilograms of water poured so that the seedbed is fully moistened. If the soil is fertile and the organic matter is sufficient, the amount of fertilizer can be appropriately reduced.
Seeding fertilizer. Miao Qi dressing can be combined with thinning seedlings, according to the growth of seedlings, generally used per acre per person with 500 to 600 kilograms of human and animal manure water, depending on soil moisture depends on the amount of soil moisture may be. If the seedling potential is poor, it can be applied 5 to 6 kg of ammonium sulfate or 6 to 7 kg of ammonium bicarbonate per acre. After five leaves, no fertilizer is applied. About 7 days before transplanting, the plant will start to “get up and fatten†or “send marrying manureâ€. Each acre will be supplemented with 8 to 10 kg of ammonium bicarbonate per mu in order to promote seedlings with multiple new roots. When drought, irrigation once every 2 to 3 days can increase drought resistance.
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