用果实套袋（光处理）方法，研究了6年生M26矮化砧苹果树果实套袋对干物质生产能力的影响。
This essay studied the effect of shading fruit by bagging in the dry matter production in apple trees from M26 Dwarfing Rootstock.
各矮化砧苹果树中短梢及其上叶的总生长量占全树新梢及叶总生长量的比例，高于乔砧树；
The growth amount of fruit spur and the leaves on them of apple trees grafted on dwarf stocks were much higher in comparison with those grafted on seedling stock.
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