So it has a great significance for arid land production to study the effect of water and temperature on the properties of soil and crops.
因此，研究水热条件对土壤、作物性状影响，对旱地农田生产有十分重要的意义。
From the point of view of soil comprehensive fertility and considering the dependence of crops on the fertility factors, the results of quantitative study of the soil fertility level are shown.
从综合肥力的观点出发，结合作物对各肥力因素的依赖程度，对土壤肥力水平进行了定量研究。
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