在人工控制水分的测试坑条件下，对玉米全生育期的研究表明；
Summer corn in all growth period was studied under the control water condition in artificial-pit.
稻草覆盖可减轻玉米旱害，其效果随着覆盖量的加大而越明显，但受干旱程度和生育期影响。
The thicker the straw mulching, the more significant the effect. But the effect was limited by soil aridness and growth stage of maize.
通过大田玉米试验，验证新型土壤改良剂对夏玉米生育期土壤水分、紧实度及玉米生理生长特性的影响。
The article is validate the influence on moisture characteristic, soil compactness, biological and vegetal characteristic of summer maize by new soil amendment use field experimentation of corn.
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