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% as base fertilizer, 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, if you plant corn on a thin plot, you can apply 4 cubic meters of farmyard manure, 24 kilograms of urea, 13 kilograms of phosphate fertilizer, or 13 kilograms of 13% of compound fertilizer. Medium-fertile soil can be applied to farmer's fertilizer 3 cubic meters, urea 20 kg, or 3 15% compound fertilizer 12 kg. On the high-fertility soil, 2.5 cubic meters of organic fertilizer and 15 kilograms of urea are applied. Urea is more effective when used in top dressing.
Huaxian County Agricultural Products Testing Center Luo Junying
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