【摘要】 本文讨论了松辽平原内两个代表性试区的玉米田间土壤水分的变化、土壤水分与产量、土壤水分与密度、产量与密度几方面的关系,明确了试验条件下5月前土壤水分亏缺最大,6-9月略有盈余,基本明确了不同条件下补水的增产潜力,最终建立了水密度耦合方程,为类似地区的玉米种植提供了实践参考依据。更多还原

【Abstract】 The paper discussed the changes of soil moisture in maize fields at the 2 pieces of representative experimental areas in Songliao Plain. It also discussed the relationship between soil moisture and yields, soil moisture and densities, yields and densities etc. It was made clear through the experiment that the soil moisture was the most deficient in May under the experimental conditions, and from June to September, the soil moisture was a little surplus. The increase potentialities of yield under different conditions were basically made clear. Through the above researches, the coupling equations between soil moisture and densities were established at last, which provided the practical reference basis for maize planting at similar areas.更多还原