低温胁迫是限制植物生长发育和分布的主要环境因子之一。
Low temperature stress is one of the main environmental factors which limit plant growth, development and distribution.
在测试的所有环境因子中，渗透胁迫对诱发次生休眠是最有影响的。
Of the environmental factors tested, osmotic stress was most effective in inducing dormancy.
土壤供钾不足，钾吸收受抑，高产转基因棉花品种的应用以及不良环境因子的胁迫等是导致缺钾的重要原因。
Low supply and uptake of k, adoption of modern cotton varieties particularly Bt transgenic cotton, and environmental stress are obvious contributors to potassium deficiency.
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