木霉菌?芽孢杆菌混剂对水稻纹枯病的田间防治效果
投稿时间:2019-07-02  修订日期:2019-09-24  点此下载全文
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作者单位E-mail
邹丽文 辽宁省大连瓦房店市农业发展服务中心  
李婷婷 上海交通大学农业与生物学院/微生物代谢国家重点实验室/城市农业南方重点实验室  
付波 辽宁省大连瓦房店市农业发展服务中心 fubo1059@163.com 
陈捷 上海交通大学农业与生物学院/微生物代谢国家重点实验室/城市农业南方重点实验室  
基金项目:国家重点研究计2017YFD0200403;2017YFD0201108
中文摘要:为评价生防制剂木霉菌?芽孢杆菌混剂防治水稻纹枯病的田间药效,本实验于2017-2018连续两年采用大田对比实验对木霉菌?芽孢杆菌混剂的防效和增产率进行研究。2017年结果表明:在水稻纹枯病发生前或初期施用木霉菌?芽孢杆菌混剂两次(100 g/667 m2),防效和增产率可达53.61%和28.9%,超过木霉菌芽孢杆菌单一菌剂的防效和增产率(47.8%和12.5%;32.2%和26.2%)且持效期性较好。2018年结果表明,在水稻纹枯病发生前或发生初期施用木霉菌?芽孢杆菌混剂两次(200 g/667 m2;300 g/667 m2),防效和增产率分别达到68.52%和8.08%;79.23%和12.8%,增产显著,且对水稻安全无药害,值得进一步研究和推广应用。该研究结果将为减少化学农药的使用量,提高绿色防控水稻纹枯病的水平提供技术支撑。
中文关键词:木霉菌?芽孢杆菌混剂  水稻纹枯病  防治效果  
 
Control Effects of Mixed Agent of Trichoderma-Bacillus on Rice Sheath Blight
Abstract:To find potential bio-fungicides to control rice sheath blight and reduce the use of chemical fungicides, field trials of biocontrol agent against rice sheath blight were carried out for two consecutive years since 2017. In the first year, the mixture of Trichoderma and Bacillus strains was sprayed two times before or at the beginning stage of sheath blight occurrence (100 g/667 m2) at 10 days interval. Results suggested that control effects and yield increase rate by the mixture of Trichoderma and Bacillus strains reached 53.61% and 28.9%, better than single treatment with Trichoderma or Bacillus agent (47.8% and 12.5%; 32.2% and 26.2%). In the second year, the similar treatment (200 g/667 m2; 300 g/667 m2) resulted in 68.52% and 8.08%; 79.23% and 12.8%, respectively. This study indicated that the mixture of Trichoderma and Bacillus as a novel kind of rice sheath blight control agent performed well in field, which deserved further popularization and application as a new efficient and environmental biocontrol agent.
keywords:Biocontrol agents  Trichoderma-Bacillus mixed agents  Rice sheath blight  
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