Phosphate fertilizers should be preferentially distributed in the lean, new depression, new formation land and remote low yield fields. Nitrogen, phosphorus and potassium should be used together. If the amount of fertilizer is sufficient, it should be used as a base fertilizer and then applied as a seed fertilizer. If the amount is limited, it should first consider the use of phosphate fertilizer as a fertilizer, in conjunction with phosphate fertilizer.
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