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本文作者认为,作物产量是地下部(根系)和地上部(苗架)综合作用的结果,然而人们对谷类作物的生长及生理方面的研究多着眼于其地上部分,而对根系的生长、分布、活性及其对土壤条件的反映直接进行测定者为数不多,因而这些因素对作物的生长和产量的影响,则所知甚少.为了弄清谷类作物产量变异的原因及影响产量潜力的因素,根系的影响极需定量的研讨.本文讨论了不同播种期及土壤对根系生长的影响,试验于1980及1981年度进行.
The author believes that the crop yield is the result of the combination of the underground part (root system) and the aerial part (seedling). However, the research on the growth and physiology of cereal crops focuses on the above-ground parts and the growth and distribution of the root system , Activity and its direct determination of soil conditions are few, so little is known about the effects of these factors on crop growth and yield To understand the causes of grain yield variability and the factors that affect the yield potential , The influence of root system is in great need of quantitative research.This paper discussed the effects of different sowing date and soil on the growth of root system and the experiment was carried out in 1980 and 1981.