摘要
本研究探讨了初花期喷施多元醇对甘蓝型油菜的光合效应及增产效果,结果表明:多元醇能提高叶片叶绿素含量和光合速率,延长后期叶片寿命,增加绿色角果皮面积,从而增强了植株的光合作用能力,提高了油菜的结角率.同时,多元醇能改善油菜的经济性状,增加主花序有效长度、单株角果数、每角粒数和单株粒重,因而增产效果明显.4ppm和2ppm处理的产量分别比对照增产18.2％和7.2％.喷施多元醇对油菜籽的品质无不良影响,对油菜的生育期也影响不大.
Effects of mixtalol (MTL) on photosynthesis and yield spraying at early flowering stage of rape were studied. The results showed that the foliar spraying of MTL could significantly increase leaf chlorophyll content and photosynthetic rate, prolong leaf longevity and increase green pod surface area. Therefore, the photosynthesis of plants was promoted. which was advantageous to the accumulation of dry matter. Plants treated with MTL could increase the podding percentage. The yield components were also improved, and the effective length of main inflorescence, pods per plant, seeds per pod and seed weight per plant were increased. The significant yielding effect were observed, with 18. 2% and 7. 2% increase in yield in the treatments with 4 and 2 ppm MTL, respectively. No significant effects of MTL on seed quality and growth period were observed.
基金
浙江省"八五"重点资助项目
关键词
多元醇
光合作用
油菜
产量
Brassica napus
plant growth regulator
mixtalol
photosynthesis
