LI Baoqing,LU Xiuyun,MA Yu,et al.Control Effects of Different Biocontrol Preparations on Two Cucumber Airborne Diseases[J].Northern Horticulture,2017,41(21):75-79.[doi:10.11937/bfyy.20171250]
不同生防制剂对黄瓜两种主要气传病害的防治效果
- Title:
- Control Effects of Different Biocontrol Preparations on Two Cucumber Airborne Diseases
- Keywords:
- gray mold; powdery mildew; biological control
- 文献标志码:
- A
- 摘要:
- 以臭氧化葵花油、枯草芽孢杆菌和农抗120为供试药剂,黄瓜“德瑞特”为指示作物,研究了3种生防制剂对黄瓜灰霉病和白粉病的田间防治效果。结果表明:病害发生前喷药保护,臭氧化葵花油、枯草芽孢杆菌和农抗120对黄瓜灰霉病的防效分别为80.41%、88.45%和88.70%,对黄瓜白粉病的防效分别为80.84%、86.51%和85.55%;病害发生后喷药治疗,臭氧化葵花油、枯草芽孢杆菌和农抗120对黄瓜灰霉病的防效分别为28.72%、53.21%和56.32%,对黄瓜白粉病的防效分别为36.99%、58.80%和58.93%。并且臭氧化葵花油和枯草芽孢杆菌能有效提高黄瓜叶面积,分别增加25.23%和31.78%;单株坐果数分别增加12.15%和19.79%。3种生防制剂在病害发生前防治效果均能达到80%以上,病害发生后喷药治疗效果均低于60%,臭氧化葵花油和枯草芽孢杆菌对黄瓜具有较好的促生作用,建议使用生物农药以提前预防为主。
- Abstract:
- Oleozon,Bacillus subtilis and agricultural antibiotic 120 were used as supplied fungicides,cucumber ‘DERIT’ was used as the indicating crop,control effect of three biocontrol preparations on powdery mildew and gray mold of cucumber were studied.The results showed that application of different agents before diseases occur could prohibit the diseases effectively.The three treatments gave control efficacy of 80.41%,88.45% and 88.70% for cucumber gray mold,as which were 80.84%,86.51% and 85.55% in cucumber powdery mildew.Different emulsions were sprayed on cucumber plants in the greenhouse when the first symptoms of diseases occurred naturally.The effect of different agents against cucumber gray mold were 28.72%,53.21% and 56.32%.Compared with the treatments of gray mold,the control effects on powdery mildew disease were 36.99%,58.80% and 58.93%.The contents of leaf area and fruit number per plant were increased in varying degrees after spraying oleozon and Bacillus subtilis,the increasing value of which were 25.23% and 31.78% in leaf area,12.15% and 19.79% in fruit number respectively.In conclusion,the control effects of three different treatments were above 80% when applied before the appearance of the symptom,while the efficacy were only 60% after the appearance of the symptoms.Plant growth-promoting effects on cucumber was also observed when used oleozon and Bacillus subtilis.The results showed that the application of biological pesticide should be put on the prevention of diseases.
参考文献/References:
[1]李清华.温室黄瓜灰霉病的综合防控技术分析[J].农业与技术,2015,35(18):13.
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备注/Memo
第一作者简介:李宝庆(1983-),男,硕士,农艺师,现主要从事植物病害生物防治等研究工作。E-mail:lbq831228@126.com.