中国生物防治学报2019，Vol.35Issue(2)：185-190,166,7.DOI:10.16409/j.cnki.2095-039x.2019.02.005
四种生物农药对荔枝秋梢害虫的防效试验
Four Biological Pesticides for Insect Pest Management of Litchi Fall Shoots
摘要
Abstract
The control efficiency of three Bt (Bacillus thuringiensis) pesticides and one Beauveria bassiana against lepidopteran pests occurring on litchi fall shoots was evaluated, with 20％ of diflubenzuron diluted to 1500 times as a chemical pesticide control and water as a blank control. Our results showed that spraying of Bt B diluted at 2000 and 1500, and Bt C diluted at 1000 times exhibited higher control efficiency in comparison with other biopesticide treatments. Three days after spraying, the pest population was reduced by 77.98％, 69.45％ and 59.32％ by the three Bt treatments, respectively, which contrasted to the 50.58％ control efficiency in the chemical pesticide control. At 7 days after spraying, the pest population was decreased by 86.87％, 78.67％ and 79.58％ with the three Bt treatments, which were not significantly different from that in the chemical pesticide control (91.82％). The damage indexes of the mature leaves in the three Bt treatments were much lower than that of the blank control, and percentages of damaged leaves were not different between the Bt treatments and the blank control. Compared with B. bassiana, Bt pesticides exhibited quick pest control and more stable efficiency in face of environmental stress. Based on the above results, we recommend using Bt B and Bt C instead of diflubenzuron to control lepidopteran pests of the litchi fall shoots with proper concentrations and timing.关键词
生物农药/荔枝秋梢/苏云金芽胞杆菌/球孢白僵菌Key words
biological pesticides/litchi fall shoots/Bacillus thuringiensis/Beauveria bassiana分类
农业科技引用本文复制引用
郭义,赵灿,郑苑,王成兴,李君摘,李敦松..四种生物农药对荔枝秋梢害虫的防效试验[J].中国生物防治学报,2019,35(2):185-190,166,7.基金项目
国家重点研发计划 (2017YFD0202100) （2017YFD0202100）
国家荔枝龙眼产业技术体系 (CARS-32-13) （CARS-32-13）
广东省省级科技计划项目 (2017B020202001) （2017B020202001）
