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引言澳大利亚西南部的小麦区,含有大量易变性养分的表土层在小麦抽穗时,可能变得干燥。这种状况,使小麦产量和小麦对养分的吸收量不如一直处于湿润状态下的土层高。在那些植物吸收养分受不利条件限制的地方(如干
INTRODUCTION Wheat in the southwestern part of Australia, topsoil that contains large amounts of mutagenic nutrients may become dry when heading wheat. This situation makes the yield of wheat and the amount of nutrients absorbed by wheat higher than the soil that has been in a wet state. Where plants absorb nutrients at adverse conditions (such as dry