The effect of chemical fertilizer and farmyard fertilizer application is better than that of using chemical fertilizer or farmyard fertilizer alone, but the following points should be taken into account when applying it:
Farming fertilizer application time is slow, should be applied early, generally before the end of sowing at the end of application; and fertilizer use less effective, generally should be in the crop absorption nutrient peak 7 days before the application.
Application methods Farmyard manure should be applied in combination with deep plowing into soil tillage or combined with ridging into ridge bottom. Nitrogen fertilizer with farmyard fertilizer, 30% as base fertilizer, 70% for top dressing. Phosphorus and potash fertilizers were applied as base fertilizers at one time.
The amount of fertilizer used in combination with farmyard manure may vary depending on the crop and soil fertility. For example, if the corn is planted on a thin, ground level, 4 m3 of manure, 24 kg of urea and 13 kg of phosphate fertilizer may be applied per mu. Shi 15:15:15 13 kg compound fertilizer. Medium fertile soil can be applied to farmhouse manure 3 cubic meters, urea 20 kilograms, or application of 15:5:15 compound fertilizer 12 kilograms. High fertile soil can be applied to farmhouse fertilizer 2.5 cubic meters, urea 15 kg. Urea is more effective when used in topdressing. Fertilizer base fertilizer is better.
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