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核桃树的秋冬季管理好坏,对翌年的产量和品质影响很大。因此,搞好秋冬季管理,是保证来年核桃优质丰产的关键。一、结合采果,及时清除黑果和青果皮。核桃黑果形成的主要原因是由于核桃举肢蛾危害而形成的。据统计,落地的黑果中,平均每个果中带有活体幼虫3.7头,最多者达20头以上,举肢蛾幼虫随落果落地后脱果进入地表13厘米土中结茧越冬,翌年继续上树危害。因此,结合收打核桃果实,及时捡拾黑果,集中深埋或烧掉,是防治核桃黑的关键措施之一。同时还应将退去的青皮深埋,不得堆入于树下。这对减少来年虫口密度也有一定作用。二、整形修剪:清除病虫枯枝。核桃采收后至落叶过半前,是核桃修剪的最佳期,此时无伤流
The management of autumn and winter walnut trees is good or bad, the output and quality of the following year have a great impact. Therefore, improving autumn and winter management is the key to ensure high-yielding walnut in the coming year. First, the combination of fruit picking, timely removal of black fruit and green peel. The main reason for the formation of walnut black fruit is due to the damage caused by walnut limb moth formation. According to statistics, on average, there are 3.7 live larvae in each fruit, with a maximum of 20 or more. Each larvae of the Limb moths fall into the ground 13 cm after landing with the ground fruit, and the cocoons winter in the following year Hazard on the tree. Therefore, the combination of closed-walnut fruit, pick up the black fruit in a timely manner, concentrated deep burned or burned, is one of the key measures to control walnut black. At the same time should also be buried deep green skin, not stacked in the tree. This is also useful for reducing the population density in the coming year. Second, shaping pruning: remove pests and diseases dead branches. Walnut harvest to leaves more than half before, is the best period of walnut pruning, this time no injury