解淀粉芽胞杆菌Jt84防治水稻稻曲病田间应用技术研究

doi:10.16409/j.cnki.2095-039x.2021.02.017

摘要/Abstract

摘要： 为了明确解淀粉芽胞杆菌Jt84防治水稻稻曲病田间应用技术，本文初步研究生防菌Jt84定殖规律以及不同喷施时期对水稻稻曲病的防效。结果显示：生防菌Jt84在水稻叶表能够有效定殖，7～16 d时，叶表定殖菌量维持在10⁴cfu/cm²，30 d仍可在水稻叶表检测到生防菌Jt84；生防菌Jt84防治水稻稻曲病的最佳防治时期为水稻叶枕平时期（旗叶与倒二叶的叶枕在同一处），田间试验表明在此时期防治，当解淀粉芽胞杆菌Jt84使用量为200～400 mL/667 m²时，对水稻稻曲病防治效果为77.8%～89.5%。

关键词: 解淀粉芽胞杆菌, 水稻稻曲病, 防治时期, 生物防治技术

Abstract: The purpose of the paper is to clarify the field application technology of Bacillus amyloliquefaciens Jt84 to control rice false smut. With researching the colonization of Jt84 strain and the control effect of different spraying periods on rice false smut, the results showed that B. amyloliquefaciens Jt84 could effectively colonize on the rice leaf surface. We also observed that Jt84 strain maintaining the amount of colonizing bacteria on the leaf surface at 10⁴ cfu per cm² at 7~16 d, and it could detect after 30 days. The best biocontrol period for rice false smut was the period of flag leaf and second leaf pillow at the same place, also shown in field trials. The control effect on rice false smut was 77.8%~89.5% when Bacillus amyloliquefaciens Jt84 used at 200~400 mL per 667 m².

Key words: Bacillus amyloliquefaciens, rice false smut, control period, biocontrol technology

中图分类号:

S476

张荣胜, 于俊杰, 齐中强, 张浩, 杜艳, 俞咪娜, 宋天巧, 曹慧娟, 潘夏艳, 雍明丽, 陈志谊, 刘永锋. 解淀粉芽胞杆菌Jt84防治水稻稻曲病田间应用技术研究[J]. 中国生物防治学报, 2021, 37(3): 525-530.

ZHANG Rongsheng, YU Junjie, QI Zhongqiang, ZHANG Hao, DU Yan, YU Mina, SONG Tianqiao, CAO Huijuan, PAN Xiayan, YONG Mingli, CHEN Zhiyi, LIU Yongfeng. Study on the Field Application Technology of Bacillus amyloliquefaciens Jt84 against Rice False Smut[J]. Chinese Journal of Biological Control, 2021, 37(3): 525-530.

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