深圳市龙眼主要病虫害发生情况调查及防治

Investigation and Control Strategies of the Major Pests and Diseasesof Longan in Shenzhen

对深圳市宝安区航城街道九围果场龙眼的3种主要病虫害发生情况进行调查,结果表明,龙眼角颊木虱发生动态趋势呈多峰型,其若虫发生高峰分别出现在2月、8月和10月,5月、6月和12月发生较轻,秋稍受害较春稍重;荔枝蝽产卵高峰期在3~5月,若虫高峰期在3月和4月,成虫则一年四季均可见;龙眼鬼帚病的发生高峰期分别在3月、5月、7~10月,其发生与龙眼角颊木虱和荔枝蝽的发生密切相关系.通过分析提出5条防治措施.

Three major pests and diseases of longan were surveyed in Jiuwei Orchard in Hangcheng Street of Bao’an District,Shenzhen.The results showed that,the occurrence dynamic of Cornegenapsylla sinica showed multiple peak types.The peaks of nymph occurrence were in February,August and October,lesser in May,June and December,the autumn shoots were damaged heavier than the spring shoots.The peak of oviposition of Tessaratoma papillosa was from March to May and the peaks of nymph were in March and April,with adults occurred almost all year round.The peaks of longan witches’broom disease were in March,May,July to October,its occurrence was closely related to the occurrence of Cornegenapsylla sinica and Tessaratoma papillosa.Through analysis,five prevention and control measures are put forward.