桂东地区龙眼低产原因分析

近年来,桂东地区岑溪、梧州、贺州的龙眼单产普遍偏低。本文分析其低产原因,主观原因是:品种混杂,管理粗放;客观原因是反常的气候,花前高温,花后低温阴雨以及突发性不良天气。针对产区的实际情况,提出提高龙眼产量的调控措施:改良品种,优化组合;中耕改土,熟化土壤;科学施肥;调整好结果母枝放梢时间,加强病虫害综合防治等,供桂东各龙眼产区生产参考。

Low-yield cause analysis for longan production in Eastern Guangxi

In recent years,the longan yields in eastern Guangxi are generally lower.This paper has analyzed the causes for low-yield as followings：subjective：jumbly varieties,extensive cultivation;objective：abnormal weather,high temperature before bloom,low temperature and raining after bloom etc.Focused on local conditions,several countermeasures for increasing longan yield are put forward as technical support：improved varieties,varieties optimization,soil improvement,scientifically fertil-ization,controlling fruit branch sprouting time and pest integrated management etc.