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小麦施用磷肥可以增根、增叶、增穗、增粒、增重,提高籽秆比值,促进早熟,显著提高产量。土壤有效磷是决定磷肥有无效果以及效果大小的主要因素。在保证一定水分和适量氮肥的条件下,土壤有效磷含量和小麦产量呈高度正相关,和施磷增产率、施磷增产值呈高度负相关。根据Olsen法测定的有效磷数据及田间试验结果,对亩产600斤小麦确定的因土施磷指标是:土壤有效磷含量在
The application of phosphate fertilizer in wheat can increase root, increase leaf, increase ear, increase grain, increase weight, increase the ratio of seed stalk, promote precocious and significantly increase yield. Soil available phosphorus is to determine the effect of phosphate fertilizer and the effect of the size of the main factors. Under the condition of certain amount of nitrogen and nitrogen fertilizer, the available phosphorus content in soil was highly positively correlated with wheat yield, which was highly negatively correlated with the increase rate of phosphorus application and the yield increase of phosphorus application. According to the determination of available phosphorus by Olsen method and the results of field experiments, the phosphorus index for soil determined for 600 kg per mu was: