广西龙眼业面临的若干农业气象问题及对策

Meteorological Problems in Developing the Longan Industry in Guangxi and the Countermeasures

龙眼成花差、花而不实和寒 (冻 )害问题是制约广西龙眼发展的三大农业气象问题。根据调研资料及生产实践资料分析研究认为 :暖冬、冬春季连续低温阴雨 ,光照不足 ,是造成成花差和花而不实的主要原因。并提出在使用常规药物控梢促花的基础上 ,根据不同情况选择新型药物促花 。

Problems such as low flowering rate,flowering without bearing any fruit and cold damage are the three factors constraining the development of Longan industry in Guangxi.The information obtained from investigation and from production practice shows that the low flowering rate and flowering without bearing any fruit are caused mainly by the following factors:warm winter,low temperature and overcast and rainy weather in winter and in spring,as well as the insufficient illumination.Therefore,countermeasures are put forward for raising the integral flowering of the orchard by selecting new kinds of florigen according to actual situation,keeping the use of conventional florigen.