论最小因子理论的产生发展及应用中的问题

Development of the Theory of the Least Factor and Problems in Its Application

德国化学家李比希提出的最小因子理论经 10 0来年的证实仍有不足之处。研究表明 ,尽管作物施肥存在最小因子优势效应 ,但它与现代高产施肥获得地力潜在最高产量还具有本质的区别。从高产施肥角度来看 ,决定作物潜在最高产量的并非完全是最小因子 ,而是土壤肥力水平施肥比例和施肥量。

The paper describes the developmental background of the theory of the least factor and discusses about the problems existed in its application. The study shows that big difference exists with the highest potential yield permitted by soil fertility under the condition of modern method of high-yielding fertilizer application. Although the least factor has advantageous effect in increasing yield, it is not the least factor but soil fertility, application ratio and amount that decide crop yield.