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近年来,内蒙中、西部灌区的磷肥用量急剧增高,但肥效降低.如何科学地确定磷肥的用量,充分发挥磷肥的经济效益是一个亟待解决的课题.我们在
In recent years, the amount of phosphate fertilizer in the middle and western irrigation areas of Inner Mongolia has risen sharply, but the fertilizer efficiency has decreased. How to scientifically determine the amount of phosphate fertilizer and give full play to the economic benefits of phosphate fertilizer is an urgent issue.