...播稻；产量形成；氮素利用 [gap=1876]Key words： nitrogen regimes； returning straw； direct-sowing rice； yield forming； N utilization ...
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yield-forming 产量形成
yield-forming stage 产量形成期
yield forming period 产量形成期
plant production and yield forming 物质生产与产量形成
forming yield 产量构成
factors forming yield 产量构成因素
Yield forming factors of wheat in arid land in Shanxi were analyzed by multiple correlation and multiple regression.
采用多元相关、多元回归分析方法，分析了山西省旱地小麦产量构成因素。
Although the lower-density treatments had larger percentage of effective tillers, too lower number of effective panicles became the limited factors to the yield forming.
低密度处理分蘖成穗率虽然高于高密度处理，但有效穗数过低成为提高产量的限制因子。
The process of forming yield and their components of hybrid and conventional rice in Northern China were analyzed.
对东北杂交稻与常规稻的产量形成过程和产量结构进行了分析。
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