摘要
采用田间试验,于水稻纹枯病发病初期,连续2次用药,比较4种杀菌剂第一次药后10 d和第二次药后14 d的防治效果,并测定不同处理的水稻产量性状。结果表明:4种杀菌剂对水稻纹枯病的田间防效较好,均显著高于对照,但不同处理间防效差异不显著。第二次药后14 d平均病指防效在79. 19%—91. 27%,防效大小依次为:240 g/L噻呋酰胺悬浮剂> 24%己唑·嘧菌酯悬浮剂> 40%嘧菌酯可湿性粉剂> 6%井冈·嘧啶核苷类抗菌素水剂。所有供试药剂对水稻都有一定的增产效果,增产幅度为6. 37%—8. 56%。4种杀菌剂对水稻纹枯病具有较好的控制作用,可以作为生产中防治水稻纹枯病的高效药剂之选。
The control effects of four different fungicides were compared through field tests,the results of which were able to provide a scientific basis for safe and efficient prevention of rice sheath blight in production.In the early stage of the occurrence of rice sheath blight,the control effects of different treatments were compared 10 days after the first dose and 14 days after the second dose.The rice yields were measured correspondingly.The results showed that the control effects were significantly greater than contrast treatment,but there was no conspicuous difference among the 4 treatments.The average disease index was between 79.19% and 91.27% 14 days after the second dose,and these 4 treatments,in descending order in terms of effects,were 240 g L thifluzamide suspension concentrate>24% hexaconazole-azoxystrobin suspension concentrate>40% azoxystrobin wettable powder>6%validamycin-pyrimidine nucleoside aqua.In addition,all the treatments could increase yield of rice as much as 6.37% to 8.56%.So the four tested fungicides could be used as effective agents to control the rice sheath blight in production.
作者
陈海霞
朱明芬
常晓丽
CHEN Hai-xia;ZHU Ming-fen;CHANG Xiao-li(Zhuanghang Agricultural Sciences and Technology Experimental Station,Shanghai Academy ofAgricultural Sciences,Shanghai 201415,China;Institute of Eco-Environmental Protection,Shanghai Academy of Agricultural Sciences,Shanghai 201403,China)
出处
《上海农业学报》
2019年第2期52-55,共4页
Acta Agriculturae Shanghai
基金
上海市水稻产业技术体系建设项目(沪农科产字2017-3)
关键词
杀菌剂
水稻纹枯病
防效
产量
Fungicides
Rice sheath blight
Control effect
Rice yield
