本文从不同种植密度和施氮量对玉米籽粒产量的影响，建立了二次多项式回归方程。
Second-degree polynomials equation of maize(Zea Mays L. ) grain yield with both planting density and nitrogen fertilization was established by means of regression analysis.
以优质强筋小麦济南17为材料，研究氮肥不同施用量、基追比和追氮时期对小麦籽粒产量和品质的影响，分析了产量与品质的关系。
Jinan 17. a strong gluten wheat, was taken as an experimental material to study the effect of nitrogen application methods on grain yield and quality.
施氮后籽粒产量极显著增加。
以耐密型玉米品种“吉单209”为试材，研究了不同氮、磷用量对玉米籽粒产量和营养品质的影响。
The effects of different nitrogen and phosphorus application on grain yield and qualities of compact corn Jidan 209 were studied.
研究了不同施氮量和施氮时期对小麦籽粒蛋白质及组分含量和产量的影响。
Effects of different N-dosage applied and N-applying stages on grain protein content and protein components and yield were studied.
高淀粉玉米产量和品质的形成与干物质积累、养分吸收、碳氮代谢、籽粒库的糖分与淀粉形成关系密切。
Yield and the quality formation of the high starch maize is closely related to dry matter accumulation, the nutrient uptake, carbon and nitrogen metabolism, and the grain sugar and starch formation.
延迟追氮时期可使籽粒蛋白质含量和干、湿面筋含量有较大幅度地提高，但对产量形成不利。
Delaying topdressing nitrogen could evidently improve protein and gluten content, but it was disadvantageous to yield formation.
在大田试验条件下，研究密度与氮肥运筹对弱筋小麦品种宁麦9号植株氮代谢变化的影响，分析氮素运转与籽粒品质、产量的关系。
Effects of plant density and nitrogen fertilizer on nitrogen metabolism of weak-gluten wheat varieties Ningmai 9 with good grain quality were studied.
以具有典型特征的不同氮效率小麦品种为材料，研究丰、缺氮条件下的籽粒产量、氮效率、氮素吸收特性和氮素吸收同化关键酶活性。
Yield, nitrogen efficiency, characterization of nitrogen uptake and key enzyme activity of nitrogen assimilation were studied in wheat varieties with different nitrogen efficiencies.
氮素胁迫条件下，高效玉米基因型的籽粒产量高于施氮处理下的产量。
The field experiments indicated that the yield of high efficiency of maize was higher than low efficiency genotype.
氮素胁迫条件下，高效玉米基因型的籽粒产量高于施氮处理下的产量。
The field experiments indicated that the yield of high efficiency of maize was higher than low efficiency genotype.
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