果树早期落叶的原因及预防方法

中图分类号：S436.6 文献标识码：A

Causes and Prevention Methods of Early Defoliation of Fruit Trees

SONG Xinde (Administrative Approval Service Bureau of Caoxian County， Caoxian Shandong 2744Oo，China)

Abstract:Thecauses ofearly defoliationoffruit trees were analyzed，including physiological defoliation，pathological and pestdefoliation.Thesientificconstructionoforchardssuchasplot selection，avoidingcontinuous cropping，selectionof dis easeresistant treespecies and varieties，and constructionof shelterforest were put forward.Strengthenthemanagementof soil，fertilizerand water，reasonable pruning，improvethecultivationofhalthytrees suchasflowerandfruitthinning，and improve thediseaseresistance；the methodsof eliminating pathogens，insectsources，andtimelydrug preventionandcontrol were adopted to prevent early defoliation.

Keywords:fruit trees；early deciduous；reasons；prevention；methods

叶片早期干枯、脱落将严重影响光合及蒸腾作用等，进而影响当年及翌年的果树生长和结果，难以实现丰产、优质、高效。（剩余5922字）