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一、复合肥宜配合使用,忌单独使用复合肥宜根据不同土壤、不同作物、作物不同时期对各种养分的需求和作物当时的生长情况等因素,与其他化肥配合使用。如磷酸二铵含氮18%、含磷46%,用于需氮较多的作物时,按磷素计算用量,不足的氮素用碳酸氢铵、尿素来补充。二、氮肥宜深施,忌浅施或浇水前施用碳酸氢铵等氮素化肥施入土壤后一般要转化为铵态氮,
First, the compound fertilizer should be used in conjunction, avoid using compound fertilizer alone should be based on different soils, different crops, crops at different times of various nutrients and crops at the time of the growth of the situation and other factors, used in conjunction with other fertilizers. For example, DAP contains 18% of nitrogen and 46% of phosphorus. When it is used in crops that require more nitrogen, the amount of phosphorus is calculated as phosphorus. The shortage of nitrogen is supplemented by ammonium bicarbonate and urea. Second, nitrogen fertilizer should be deep, bogey shallower or watering before the application of ammonium bicarbonate and other nitrogen fertilizer into the soil generally be converted to ammonium nitrogen,