5种杀菌剂对水稻稻瘟病的田间防效及产量的影响
Field control effects of 5 fungicides on rice blast and their impact on rice yield
于良斌1
作者信息
- 1. 黑龙江省农业科学院植物保护研究所,哈尔滨 150086
- 折叠
摘要
[目的]为筛选出防治稻瘟病及增产效果明显的杀菌剂,为水稻病害的防控提供科学依据.[方法]采用田间药效试验的方法对防治稻瘟病常用的5种杀菌剂进行方差分析,继而通过聚类分析对5种杀菌剂的不同处理剂量进行田间防效评价.[结果]施药后均未对水稻产生药害,5种杀菌剂均能抑制稻瘟病的发生,并起到增产的效果.其中制剂用量为1050 g/hm2的35％肟菌酯·三环唑悬浮剂防效最佳(91.40％),制剂用量为1500 mL/hm2的200亿芽孢/mL枯草芽孢杆菌可分散油悬浮剂增产最显著(18.74％);聚类分析针对综合效果将5种杀菌剂的20个处理剂量分为3类,筛选出综合效果最佳的药剂处理6个.[结论]处理剂量为1050 g/hm2的35％肟菌酯·三环唑悬浮剂和浓度为1500 mUhm2的200亿芽孢/mL枯草芽孢杆菌可分散油悬浮剂对稻瘟病的防效最佳.
Abstract
[Aims]This study aims to select the best fungicide with obvious effect on controlling rice blast and increasing yield,and to provide scientific basis for the prevention and control of rice diseases.[Methods]Using the method of field efficacy trial,variance analysis was conducted on 5 fungicides commonly used to control rice blast,and then the field control effects of the five fungicides were evaluated by cluster analysis.[Results]There was no phytotoxicity to rice after application,and all of the five fungicides could inhibit the occurrence of rice blast and increase the yield.Among them,trifloxystrobin·tricyclazole 35％SC at 1050 g/ha had the best control effect(91.4％),and Bacillus subtilis 20 billion spores/mL OD with the concentration of 1500 mL/ha increased the yield most significantly(18.74％).Cluster analysis divided 20 treatments of 5 fungicides into 3 categories according to the comprehensive effect,and 6 treatments with the best comprehensive effect were selected.[Conclusions]The treatments of trifloxystrobin·tricyclazole 35％SC at 1050 g/ha and Bacillus subtilis 20 billion spores/mL OD at 1500 mL/ha have the best control effect on rice blast.
关键词
水稻/稻瘟病/杀菌剂/防治效果/聚类分析Key words
rice/rice blast/fungicide/control effect/cluster analysis引用本文复制引用
出版年
2024
NETL
NSTL
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