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In agricultural production in many areas, there are two incorrect tendencies when farmers are fertilizing: First, a large amount of fertilizer is applied, and chemical fertilizers are used to increase production. Although the results increase grain production, the soil organic matter content is greatly reduced, resulting in soil compaction. It has a great impact on the production of the next crop; the second is the simple application of farmyard manure or the little application of chemical fertilizer. The result is that although the fertility has been reduced, the production cost is reduced, but the grain yield is not high. Practice has proved that if the grain output is to increase year by year and the soil is more and more fertile, it is necessary to take the road of chemical fertilizer and farmyard manure.
1. Application time: farmyard fertilizer is slow, it should be applied early, generally applied once before sowing; while the amount of chemical fertilizer is small, quick effect, generally should be applied about 7 days before the peak period of crop absorption and nutrition.
2. Application method: The farmyard manure should be combined with deep tillage into the soil tillage layer, or combined with the ridges to buckle into the ridge bottom. Nitrogen fertilizer with farmyard manure, 30-40% as base fertilizer, 60-70% as top dressing, phosphate fertilizer and potash fertilizer as base fertilizer applied once.
3. The amount of fertilization: the combination of chemical fertilizer and farmyard manure, the amount of which can be differentiated according to the different crop and soil fertility. For example, planting corn on a thin plot can produce 4 cubic meters of farmyard manure, 20-25 kilograms of urea, 13-15 kilograms of phosphate fertilizer, or 25 kilograms of compound fertilizer of 51%. Medium-fertility soil can be applied to farmhouse manure 3 cubic meters, urea 20 kg, or 51% compound fertilizer 20 kg. The organic fertilizer on the high-fertility soil is 2.5 cubic meters and the urea is 15 kilograms. Urea is more effective when used in top dressing.
Huaxian County Agricultural Products Inspection and Testing Center Chang Bili
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