摘要
在林间通过卵期释放广赤眼蜂、幼虫期释放广斧螳的措施进行黄野螟绿色综合防治技术试验。(1)绿色综合防治处理:在黄野螟卵期释放广赤眼蜂,每隔3d释放1次,连续释放3次;在幼虫期释放广斧螳6龄若虫1次;(2)对照处理:幼虫期喷洒5%氯氰菊酯1000倍液。处理后进行为期4个月的跟踪调查。结果表明:绿色综合防治处理的平均黄野螟幼虫虫口密度为22.5头/株,沉香树平均失叶率为8.75%;与对照处理的平均黄野螟幼虫虫口密度17.5头/株和沉香树平均失叶率5%相比,均无显著差异。释放广赤眼蜂和广斧螳的绿色综合防治黄野螟效果与喷洒化学药剂无异,且能有效减少农药用量,提升林地昆虫物种多样性。
The green comprehensive control technology experiment of Heortia vitessoides was carried out in the field by releasing Trichogramma evanescens during H.vitessoides egg stage and Hierodula petellifera during the larval stage.The experiment treatment was to release T.evanescens once per three days for three consecutive times in total,and to release the sixth instar nymph of H.petellifera once.The controlled treatment was to spray a 1000-fold dilution of 5%cypermethrin during H.vitessoides larval stage.After a four-month follow-up survey,the results showed that the average population density of H.vitessoides larvae treated with green comprehensive control was 22.5 per plant,and the average leaf loss rate of Aquilaria sinensis trees was 8.75%,which was not significantly different from the controlled treatment with an average larvae population density of 17.5 and an average leaf loss rate of 5%.The green comprehensive control of H.vitessoides by releasing T.evanescens and H.petellifera is not different from spraying chemical agents on control effect,and can effectively reduce the utilization of pesticides and improve the diversity of insect species in the field.
作者
彭燕琼
陈龙舟
肖宁
刘卫宏
冼子耀
古天一
王祥
Peng Yanqiong;Chen Longzhou;Xiao Ning;Liu Weihong;Xian Ziyao;Gu Tianyi;Wang Xiang(Forestry Institute of Maoming City,Maoming Guangdong525000)
出处
《热带林业》
2024年第4期101-104,共4页
Tropical Forestry
基金
绿美广东六大提升行动专项资金(基层林业科技支撑服务)(2024MMKJ01002)“沉香树害虫黄野螟绿色防治技术示范推广”。
关键词
沉香树
黄野螟
绿色综合防治
效果
Aquilaria sinensis
Heortia vitessoides
Green comprehensive prevention and control
Effect
