论文部分内容阅读
为了便利各人民公社在土壤普查鑑(?)中对土壤养分含量計算方便起见,茲介绍土壤养分(氮、磷、鉀)速测结果的計算方法,供作参考。
In order to facilitate the people’s communes in the soil census (?) For the convenience of calculation of soil nutrient content, it is introduced soil nutrients (nitrogen, phosphorus and potassium) quick test results calculation method for reference.