论文部分内容阅读
在后季稻秧苗五叶期喷浓度为1000ppm的乙烯利,有控制苗高和根长、促进秧苗粗壮的作用。喷药后秧苗乙烯释放量和脱落酸(ABA)的含量均比对照高,秧苗细胞伸长受到抑制,叶片面积缩小,株型矮小,叶色深绿;光合效率提高,同化产物在叶鞘内分配比例增高;出叶加快,根系的生长与活力虽暂时受到抑制,但在移植后都有所增强。这些都有利于改善秧苗素质和移植后的生长发育。对促进提早抽穗和增产有积极作用。
In the post-season five-leaf seedlings sprayed at a concentration of 1000ppm ethephon, control of seedling height and root length, to promote seedling sturdy role. The content of ethylene and abscisic acid (ABA) in the seedlings after spraying were higher than those in the control, the cell elongation was inhibited, the leaf area was reduced, the plant type was short and the leaf color was dark green. The photosynthetic efficiency was improved and the assimilation products were distributed in the sheath The proportion increased; out of leaves to speed up, growth and vitality of the root although temporarily inhibited, but have increased after transplantation. These are conducive to improving the quality of seedlings and growth after transplantation. To promote early heading and increase production has a positive effect.