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我市在９０年代初苹果树发展很快，其中有相当数量为乔砧密植园，密度一般为３ｍ×４ｍ。这些果园现已进入结果年龄，但实际大多却迟迟不能成花结果。为搞清其原因，特实地进行了有关调查。调查表明，凡是不能按龄进入结果期的树，树势大多表现强旺，主枝多，角度小，枝条...
In the early 90s, our city developed rapidly apple trees, in which a considerable number of plants were planted as angels and plants, with a density of 3m × 4m. These orchards have now entered the age of results, but in reality, most of them are still unable to bear fruit. In order to find out the reason, a special investigation was conducted. Surveys show that most of the trees that can not enter the fruiting period at an appropriate age show strong vigor, mostly branches, small angles and branches.