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试点宿迁果园地处黄河故道,设老树挖除全部栽植新树(43.1亩),3种更新方法。根据结果分析认为:(1)对树龄较大,进入盛果中后期的果园,以一次性刨树重栽更新法最好,这种方法即能保证更新果园的建园质量,又可保证品种换代和栽培新技术的堆广;需注意的问题是克服地力亏损和重茬危害
Pilot Suqian Orchard is located in the old course of the Yellow River, set the old tree dig all planted new trees (43.1 acres), three kinds of update methods. According to the results of the analysis, it is considered that: (1) The method of replanting and rejuvenating one-off tree is the best for the older orchard to enter the middle and late stage of fruit-bearing orchards. In this way, the quality of the orchard can be renewed and the varieties Replacement and cultivation of new heap of new technologies; need to pay attention to overcome the loss of land loss and cropping hazards