土壤供肥量的动态结构探讨

Probe into the dynamic structure of soil for fertilizer

土壤供肥量是耕作土壤重要的肥力参数之一,也是测土配方施肥所需的五大参数之一。土壤供肥量具有动态结构,有一定的弹性范围,具有不同的特征值。不同的特征值对应着不同的施肥配方,各自的准确程度也不同。要降低配方误差,应该采用缺素区代替不施肥区产量来估算施肥量,并且采用合适的目标产量。

Volume of soil for fertilizer was one of important farming soil fertility parameters, as well as one of the five re- quired parameters in formula fertilization by soil testing. It was a dynamic structure, had a certain range of elastic and dif- ferent characteristic values. Different eigenvalues correspond to different kinds of fertilizer and their accuracy was different. To reduce prescription errors, nutrient deficiency yield should be adopted instead of nb fertilizer to estimate fertilizer applica- tion and suitable target yield was utilized.