密度、邻体和综合效应对水稻总叶数影响的研究

通过7个处理对比研究3种效应对水稻总叶数的影响大小.结果表明:水稻总叶数在密度效应、邻体效应和综合效应这几种条件下存在差异.综合效应加大,出叶周期逐渐变长,水稻总叶数减少;随着密度效应的加大,出叶周期逐渐变小,水稻总叶数增加;邻体效应加大,出叶周期逐渐变长,水稻总叶数减少.并且这几个效应影响大小不同,从大到小依次为综合效应、密度效应、邻体效应.该文并对产生这些效应的生理、生态原因进行了讨论.

Effects of the Density, Neighborhood and Combine on the Total Leaf Number of Rice

Through seven treatments, the effects of three types on the total leaves number of rice main stem was studied. The results showed that: by the three effects of density, neighborhood and the combine, the total leaf number of rices was different. With the increase effects of combine, density and neigh-borhood, the leaf cycle gradually became longer, shorter and longer, then the total leaf number was reduced, increased and reduced,respectively. And these effects were different, namely, the combine effect> density effect>neighborhood effect. At last, the reasons of the eco-physiology that resulted from these effects were discussed.