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为了充分发挥磷肥的增产效果,提高经济效益,1979年选择供磷能力较低的太湖白土,进行了稻麦轮作中磷肥施用茬口的定位试验,取得三年九季试验资料,现整理如下.
In order to give full play to the effect of increasing production of phosphate fertilizer and increase economic benefits, in 1979, the Taihu Lake clay with low phosphorus supply capacity was selected to carry out the positioning test of phosphorus fertilizer application stubble in rice and wheat rotation. The data of nine years of nine seasons were obtained and are summarized as follows.