摘要:农玉米花粉剥离扫描观察·····································································……(1水稻叶片衰老的研究1.叶片衰老期间叶绿素、脯氨酸及乙烯产量的变化···……(1油菜素内醋和赤霉素对小麦初期生长反应的比较····································……(l些麻不同群体结构的光合作用和产量形成1.群体的构成与光合性状·········……(1竺麻的光合特性及其与纤维产量和品质的关系·········…