论文部分内容阅读
试验和生产实践表明,增施磷肥对多种作物都有明显的增产作用,但不同社队、地块的缺磷情况不同,增产的幅度变化很大.为了开展群众性的土壤普查,作到逐队逐块科学合理地施用磷肥,现把华中农学院土壤研究室研究成功的一种简便的测定土壤含磷水平的方法——油菜幼苗法作一介绍,供生产中参考使用.
Experiments and production practices show that the application of phosphate fertilizer has obvious effects on increasing the production of many crops, but the phosphorus deficiency in different communities and plots is different and the rate of yield increase varies greatly. In order to carry out mass soil survey, Applying phosphate fertilizer one by one scientifically and reasonably by each team, a simple and convenient method for determining the phosphorus content of soil-rapeseed seedling method-was successfully researched by Soil Research Laboratory of Huazhong Agricultural College for reference in production.