龙眼暖春"冲梢"气象指标及其发生规律研究

Meteorological Indices and Appearances Patterns of Warm Damage in Longan

关键词:  龙眼  暖春"冲梢"  指标  时间分布  空间分布

Key words:  Longan  warm damage in spring  indices  temporal distribution  spatial distribution

摘要:

利用广西玉林农业气象试验站1987~1992年及2001~2002年的龙眼"冲梢"观测记录资料及同期的气温、风向资料,确定龙眼暖春"冲梢"的气象指标,然后根据这些指标,选取广西龙眼主产区40个气象观测站点1961~2000年2~3月日平均气温、日最高气温以及南风天数资料,分析广西龙眼主产区春季暖害的时空分布特征,提出采用选择龙眼暖春"冲梢"少的区域发展龙眼;根据气候灵活应用调控技术;推行平衡施肥技术和药物控梢的方法来防抗龙眼暖春"冲梢"。

Abstract:

The meteorological indices are determined using the records of warm spring damage of Longan and the relevant obvervations of air temperature and wind in the periods of 1987 to 1992 and 2001 to 2002 by Yulin Agriculture Meteorological Obvervatory,southeast Guangxi. Based on those indices,the appearance patterns of warm spring damage of Longan in the Longan growth areas of Guangxi are analyzed by using the meteorological observations in Feb. to Marfrom 1961 to 2000 in 40 observatories of Guangxi.To reduce the warm spring damage,some suggestions are revealed as follows Choose few-warm-spring regions to grow longan,use fertilizing techniques and chemical control and other measures.