通过以上两个方面提高土壤水分生产效率，建成旱地棉花高质量群体。
The efficiency of soil moisture production could be increased by the above two methods to establish a cotton population of high quality in dry land.
并通过数学模型，对各参试因子的主效应和交互作用效应进行了分析，最后提出旱地棉花高产稳产栽培优化方案。
Main effects and interactions among the tested factors can be analyzed using the models, which will be helpful for making schemes for high-and-stable-yield dryland cotton production.
大多数旱地作物，如玉米和棉花不能在被水饱和的土壤中存活，因为氧的含量大大减少了。
Most upland crops such as corn and cotton cannot survive in soils that are water-saturated because of the greatly reduced oxygen content.
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