红富士苹果花序初生叶对座果的影响

研究结果表明，摘除花序初生叶时间越早，数量越多，座果率越低；花序初生叶叶片数越多，叶面积越大，果台的座果率越高；上年的高产树，翌年花序初生叶叶片数量少，叶面积小，座果率低。喷不同浓度的尿素后，座果率有不同程度的提高。

The Effect of Rosulate Leaves on Fruit Set in Red Fuji Apple

In this paper,the effect of rosulate leaves on the fruit set was studied with apple cultivar Red Fuji.The result showed that rosulate leaves played an imPOrtant role in the setting. The earlier the rosulate leaves were removed and the larger the number of removed leaves,the lower the percentage of fruit set was,the larger the number and the area of rosulate leaves,the higher the percentage of fruit set.Over bearing trees of last year showed the smaller number of the rosulate leaves and lower Percentage of fruit set than that of lower yielding trees.Spraying urea after full bloom can increase the percentage of fruit set.