摘要
2008年春节前后的强平流天气给广西龙眼、荔枝生长发育造成较大影响,表现为:结果母枝的花芽生长点停止发育甚至干枯死亡,早熟荔枝花芽枯死,花期比常年推迟15～20d,植株枝梢成花率低,多发生"冲梢"或"梢上花"现象。花质普遍偏低,花序长度为常年的70%～80%,花粒大小也仅为常年的70%～80%。只有晚熟龙眼荔枝座果率较高,其它早中熟品种座果率偏低。成熟期比常年推迟10d左右。
The freezing rain and snow weather in 2008 had a great effect on Longan and Litch growth in Guangxi. It was found that the flower buds in bearing base shoots ceased initiating and even withered;floral buds in early-ripening Litchi withered and flowering dates were delayed to 15—20 days longer than usual;low rate of floral initiation occurred to branch tips and there existed abnormal-early flowering branches. Flowering quality was commonly poor and floral bud length and floral bud size were 70—80% as many as the usual year. Only late-ripening longan and litchi had a high fruit setting rate while other early and middle-ripening ones a low rate. Ripening dates were delayed to about 10 days.
出处
《广西职业技术学院学报》
2008年第6期5-7,12,共4页
Journal of Guangxi Vocational and Technical College
基金
广西自然科学基金资助
合同编号:桂科自0542039
农业部"热作信息收集分析发布"课题经费资助
关键词
平流低温
龙眼
荔枝
生长发育
freezing rain and snow weather
longan
litchi
growth
