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调查了清耕园和生草园苹果幼树越冬抽条情况,根据土温动态监测结果,初步认为生草苹果园抽条严重的原因是杂草反光隔热,春季树盘根区升温慢,水分冻结,根系吸收水分少,而地上部枝条蒸腾强烈,树体严重失水所致。在生草苹果园中进行了树盘覆草、树盘覆草+覆黑膜、树盘清耕、树盘清耕+覆黑膜等试验,表明生草苹果园采用树盘清耕+覆盖黑膜是降低幼树抽条的有效方法。
According to the results of dynamic monitoring of soil temperature, the reason for the serious pumping of raw grass apple orchard is that the weeds are reflective and heat-insulated, and the temperature in the root zone of tree-pan in spring is slowly rising. Water freeze, the root absorbs less water, while the shoots above ground transpiration, severe dehydration caused by the tree. In the grass apple orchard in the tree cover grass, tree cover grass + black film, tree tillage, tree tillage + black film and other tests show that the grass orchard tree cultivation with apple tree cover Black film is to reduce sapling effective method.