The ultrastructural changes in leaf cells of submerged maize Zea mays l.

叶片细胞超微结构的变化进行连续观察。

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Under P-stress, mobilization and utilization of structural K in gneiss and feldspar by maize Zea mays l.

玉米、油菜和黑麦草等植物根系可直接活化和利用片麻岩和钾长石中的矿物结构钾。

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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.

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。

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