By returning straw to the field, planting Chinese milk vetch and using farmyard manure, the amount of chemical fertilizer can be reduced.
When the straw is returned to the field, 200 kg of straw is returned per mu , and 20% of phosphate and potassium fertilizer can be applied less , that is, 2 kg of potassium chloride and 5 kg of superphosphate are applied per mu, and the fertilizer input per mu is 15 yuan. Early straw consumes a certain amount of nitrogen element, the amount of nitrogen should be increased early, late reduced nitrogen fertilizer.
The contents of nitrogen, phosphorus and potassium in Ziyunying Ziyun are 0.48% , 0.11% and 0.24% respectively , that is, 500 kg of acacia per mu can be used for 5 kg of urea, 5 kg of superphosphate and 2 kg. Potassium chloride saves 25 yuan per mu of fertilizer . The cultivation method of Chinese milk vetch is simple, the yield per mu is 1500 kg, and the general burying is 500 kg per acre .
Applying farmyard manure to farmyard fertilizer can reduce the amount of chemical fertilizer and save costs. However, the accumulation and application methods of farmyard manure will cause serious loss of nutrients and will not increase the fertilizer. To do the sealing work accumulated manure, fertilizer volatile and prevent leakage. Fertilizers should be fully decomposed to increase nutrient release rates and kill parasites, germs and weed seeds. Farmyard manure should generally be applied as a base fertilizer and should not be stored and applied with alkaline fertilizers such as grass ash.
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