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在江苏省南京到镇江间,沿长江两岸包括江宁、句容、溧水、仪镇、江浦、六合等县,遍布地形起伏的黄土丘陵。这一地区中,在一个生产队的范围以内,所包括的土壤类型及其利用方式的差别可以很大,加上作物种类又多,所以对于施用磷肥的效果极不一致。如何根据这一特点和其它农业措施,来明确合理施用磷肥的条件,目前还缺乏系统的试验。现在我们根据1961年到1965年在江宁县东山镇黄土丘陵地的试验结果,和附近方山、湖熟、花园等公社的推广情况,初步作一总结。
Between Nanjing and Zhenjiang in Jiangsu Province, along the Yangtze River, including Jiangning, Jurong, Lishui, Yizhen, Jiangpu, Liuhe counties, all over the undulating loess hills. Within this area, the type of soil included and the way it is used within a production team can vary widely, and with the large number of crops, there is a disproportionate effect on the application of P fertilizers. According to this feature and other agricultural measures to clarify the conditions for the rational application of phosphate fertilizer, the current lack of systematic testing. Now, based on the experimental results of the Loess Hilly in Dongshan Town, Jiangning County from 1961 to 1965, and the promotion of commune near Fangshan, lakes and gardens, we made a preliminary summary.