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我们从1980年开始利用土壤普查成果,根据不同土壤类型供给小麦养分的能力和小麦对养分的实际需要进行科学施肥。我们称这种施肥法为“以地定产、以产定肥”。我县土壤养分含量较低,有机质平均含量仅0.94%,全氮0.059%,碱解氮43.6ppm,速效磷13.7ppm,速效钾77.7ppm。两年来,我们采用“以地定产,以产定肥”的科学施肥法在榆垡、垡上公社的12个大队3,600亩麦田上搞小面积试验和大面积示范,均获得增产。
We started with the results of the soil census in 1980 and scientifically fertilized according to the ability of different types of soil to supply nutrients to wheat and the actual needs of wheat for nutrients. We call this method of fertilization “to produce in order to produce fertilizer.” Soil nutrients in our county is low, the average organic content of only 0.94%, 0.059% total nitrogen, alkaline hydrolysis of nitrogen 43.6ppm, available phosphorus 13.7ppm, available potassium 77.7ppm. In the past two years, we have increased the production of small-area experiments and large-area demonstrations on 3,600 hectares of wheat fields in 12 brigades of Yuzhong and Shangshang Commune by adopting the scientific fertilization method of “producing land in a fixed yield”.