土壤养分与春小麦产量关系及最佳施肥量研究 关键词 土壤养分 春小麦产量 相关关系 最佳施肥量 [gap=841]Key words Soil nutrient，Spring wheat yield，Correlativity，Optimum fertilization
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yield of spring wheat 对春小麦产量
Compared to Guyuan, spring wheat yield at Yulin and Haiyuan was lower, yield fluctuation was stronger and soil desiccation rate was faster.
与固原相比，榆林和海原连作春小麦产量较低，产量波动性较大，春小麦田干燥化进程较快。
Through the rotating, regressive and perpendicular experiment and the study of the effect of spring wheat yield between different fertilizer quantity and density.
根据旋转回归正交试验，研究探讨了不同肥量、密度条件下对春小麦产量的影响。
The data of daily mean temperature, precipitation and wheat yield in Liuzhi special zone from 1988 to 2008 were used to analyze the relationship between lower temperature in spring and wheat yield.
利用六枝特区1988 - 2008年的日平均气温、降水资料以及同期的小麦产量数据，分析了倒春寒天气特征及其与小麦产量的关系。
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