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一、什么是采前摘叶 采前摘叶就是在苹果采收前一段时间把树冠中那些遮挡果面,影响果实着色的叶片摘除,以增加果面光照,避免果面局部绿斑,促进果实均匀着色。 叶片是有机营养形成和果实生长发育的基础,果个增大,产量形成都离不开叶片。但在果实着色期间,当叶片密度过大,距离果面近,甚至贴着果面时,必然遮挡果面光照,形成果面绿斑。特别是近几年推广栽培的短枝型品种,短果枝枝量大,贴果叶片多,
First, what is the pre-harvest leaf picking leaves before the pick is in the apple harvest some time before the canopy of those covering the fruit surface, affect the fruit color of the leaves removed in order to increase the fruit surface light, to avoid local green spots fruit, and promote fruit Even coloring. Leaves are the basis of organic nutrition and fruit growth and development, the fruit increases, the formation of the yield can not be separated from the leaves. However, during fruit coloring, when the leaf density is too large, close to the fruit surface, and even close to the fruit surface, it is inevitable to cover the fruit surface light to form a green spot fruit. In particular, in recent years to promote the cultivation of spur type varieties, short branches, large amount of fruit, fruit leaves more,