采用随机区组设计方法，研究了达尔丰喷施时期和喷施量对玉米产量和其它经济性状的影响。
By using randomized-block design of two factors, the effects of Daerfeng fertilizer and spraying date on maize yeild and other economic characteristics were studied.
本文分析了利用二次回归旋转组合设计，研究玉米大豆间作群体各限制因素对产量等目标性状的影响。
The influence of limiting factors in a population of intercropped corn and soybean upon object characters such as yield was studied with quadratic regression rotational combinatorial design.
水分胁迫导致夏玉米果穗性状恶化，经济产量大幅下降。
The ear characteristics were deteriorated and the economic yields of maize decreased significantly under water stress.
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