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七十年代以来,大量科研资料表明,施用磷、钾肥在我区有较大增产效果。这和过去只有少数土壤缺磷,一般不缺钾的历史情况大不相同。1978年,我所在太湖平田地区不同肥力的黄泥土和白土上测定了磷,钾化肥对小麦的肥效。1979年又以大麦为主,和化肥试验网各单位在不同土质上进行了14个大元麦三要素肥效试验,兹将所得结果总结如下。
Since the seventies, a large number of scientific research data show that the application of phosphorus and potassium fertilizer in our area have a larger yield increase. This is not the same as the historical situation that there was only a few phosphorus-deficient soils in the past. In 1978, the phosphorus fertilizers and potassium fertilizers on the fertility of wheat were measured on different types of yellow soil and clay with different fertility levels in Pingtian, Taihu Lake. In 1979 and barley-based, and Fertilizer Experimental Network units in different soil 14 large elements of wheat three elements of fertilizer efficiency test, the results will be summarized as follows.