Winter wheat yield was more sensitive to rainfall and spring maize yield more influenced by previous crop stubbles in rotation system.
在轮作条件下，冬小麦的产量更容易受到降水的影响，而春玉米的产量更容易受茬口的影响。
Results showed that nitrogen quantity was the chief factor to affect spring maize yield, irrigation quantity was the second factor, phosphorus quantity was the third.
结果表明，在试验年施氮量对产量影响最大，灌溉量次之，施磷量最小。
The field experiment was conducted to study the effects of different conservation tillages on soil temperature, moisture and yield formation of spring maize.
通过大田试验研究了保护性耕作对土壤水温和春玉米产量形成的影响。
With 312-d optimized saturation design, field experiment was conducted to study yield effect of water and fertilizer coupling on spring maize.
采用312-D最优饱和设计，开展了春玉米水肥耦合作用田间试验研究。
With 312-d optimized saturation design, field experiment was conducted to study yield effect of water and fertilizer coupling on spring maize.
采用312-D最优饱和设计，开展了春玉米水肥耦合作用田间试验研究。
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