一、水稻土壤的氮肥力(一)影响水稻土壤供氮能力的因素在这些因素中,首先是土壤的全氮含量与有机质含量这两项数值,能说明土壤氮肥力达到何种程度?科学界于总结本世纪以来的几乎全部的有关研究工作后,认为肯定意见与否定意见各占一半.因此,在一般科 I. Nitrogen Fertility of Paddy Soil 1. Factors Affecting Nitrogen Supply Ability of Paddy Soil Among these factors, the first is the total nitrogen content and the organic matter content of soil, which can explain the extent of soil nitrogen fertility? The scientific community After summarizing almost all relevant research work since the beginning of this century, half of the opinions of affirmative opinion and negative opinion are considered, therefore, in the general section