妃子笑荔枝还原控冠修剪试验

根据妃子笑荔枝成花易、发梢强的特点,对计划密植园已封行的妃子笑荔枝进行连续3年的还原控冠回缩修剪、一般回缩修剪和不修剪3个处理试验。结果表明,还原控冠修剪园间年年不封行,单株产量高;一般回缩修剪的荔枝园最终会走向封行,产量不断下降;不修剪的荔枝园第3年即因株行间重度郁闭而形成平面结果现象,单株产量极低。试验证实了还原控冠修剪技术在妃子笑荔枝上应用是适宜的,能达到高产稳产和延长丰产年限的目的。

Pruning experiments on reverting and controlling the crown of litchi variety Feizixiao

Litchi variety Feizixiao is characterized of easy flower-formation and strong shoot-formation.According to that,three treatments including whip-back pruning for reverting and controlling the canopy,common whip-back,pruning and nonpruning were conducted on litchi orchard with planning high density and sealed rows for three years.The results showed that the rows of orchard were uncover in three years and the yield of litchi was high by whip-back pruning for reverting and controlling.The yield was decreasing and the rows of orchard were covered gradually by common whip-back.With un-pruning,the space of plants and rows were very close,so fruits bore in the upper layer and the yield of the litchi tree was very low in the third year.The results proved that the whip-back pruning for reverting and controlling the canopy was suitable for the litchi variety Feizixiao,which it can obtain stable and high yield of fruit and prolong fruitful years.