Returning straw to the field 200 kilograms of straw per acre, can apply 20% less phosphate and potassium fertilizer, that is, apply 2 kg of potassium chloride and 5 kg of superphosphate per acre, and save 15 yuan of fertilizer per acre. The straw needs to consume a certain amount of nitrogen in the early stage of returning to the field, and the amount of nitrogen fertilizer should be increased in the early stage to reduce the amount of nitrogen fertilizer in the later stage.
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.
Application of farmyard manure The application of farmyard manure 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. Seal the work when accumulating farmyard manure to prevent the volatilization and leakage of fertilizer. 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.
Author: Zong Yu Source: Jiangsu Agricultural Science and Technology News
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