环剥对麦香桃生长发育的效应

对早熟桃麦香品种进行了不同时期的主干环剥处理，结果表明，麦香桃盛花期和花后１５ｄ环剥增产效果显著，株产分别较对照高２７．６６％和１３．５１％，并增大了果个，提高了座果率。环剥能显著抑制新梢和副梢的生长，环剥后降低了叶和果肉的含Ｃａ量。对麦香桃环剥的后期效应研究表明，盛花期和花后３０ｄ的环剥显著改变了枝类组成，短果枝和花束枝比例增加，徒长性果枝明显减少，同时也显著降低了内膛枯枝率和冬剪量．两个时期的环剥处理使花芽饱满，也提高了第２年的产量．

Effects of Girdling on Growth and Development of Maixiang Peach

The early-ripeness Maixiang peach tress were girdled in trunks at different stages. The results showed that the yields of fruit in the treatments of girdling at full bloom and 15 days after full bloom increased remarkedly, 27.66% and 13.51% more than control, respectively. Fruit size and set also were raised.The growth of Shoots and accessory shoots became significantly slow and the contents of calcium in leaf or fruit decreased in all girdling treatments. The girdling at full bloom or 30 days after full bloom changed noticeably branch ratio, i. c., fruit spur and bouquet spur were increased, but the spindling bearing shoots,the dead shoot rate in the interior canopy and winter pruning amounts were decreased significantly. The girdling treatments at the two stages made the flower buds plump and also raised the next yields.