Soil drought reduced moisture content and nitrogenase activity of nodules.

土壤干旱降低田菁根瘤的含水量和固氮活性。

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The changes of protein in wheat seedling roots were investigated under soil drought condition.

在土壤干旱条件下，小麦幼苗根系组织含水量降低，可溶蛋白质含量增加。

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The results showed that seedling could raise its root vigor against soil drought in some scope.

结果表明：在一定的土壤干旱范围内，苗木可以通过提高根系活力来适应逆境。

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The local economy is ruled by agriculture, but the soil is infertile and much of the northeast is in the grip of a drought.

VOA: standard.2010.05.14

Overgrazing, soil depletion, drought, and floods persist as problems for the future.

FORBES: Swaziland

Lawn and golf-course grass will be tougher, trees more resistant to drought, or adapted to clean up contaminated soil.

ECONOMIST: Non-food GM