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一、作物土壤营养的最佳条件长期以来人们一直在努力探索作物所需的最佳营养条件。因为一般认为目前作物的平均产量水平远远低于它的产量潜力,其主要原因就是因为某些营养条件没有达到最佳状态。例如,如果影响作物产量的因素中,有五个因素处于最佳水平的80%(这已经是很好的条件了),则实际产量将只有产量潜力的30%,即(80/100)~5。这一估计大体上是符合实际的。从世界主要作物的产量水平差异来看,在一定程度上可以说明这一点。
1. The best conditions for crop soil nutrition People have long struggled to explore the best nutritional requirements for crops. Because the current crop is generally considered to be far below its yield potential, the main reason for this is that some nutritional conditions are not optimal. For example, if five of the factors that affect crop yields are at 80% of the optimal level (which is already a good condition), the actual yield will be only 30% of the yield potential, ie (80/100) ~ 5. This estimate is generally realistic. To some extent, this can be illustrated by the differences in the yield levels of the world’s major crops.