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施用磷肥要做到土壤对口,就需要有一种比较简易的适宜于生产实践中能逐块测定供磷水平的方法。为此,我们在1972—1974年进行了幼苗法测定田块土壤供磷水平的研究。现将研究的情况及其应用技术简述如下。
The use of phosphate fertilizer to achieve soil counterparts, there is a need for a relatively simple and suitable for production practice can be measured on a block-by-block basis. To this end, we conducted in 1972-1974 seedling seedling phosphorus determination of field research. Now the research situation and its application of technology is summarized as follows.