40%己唑醇·嘧菌酯SC防治水稻纹枯病的田间试验研究

Field Experiment of 40%Hexaconazole·Azoxystrobin SC in Control of Rice Sheath Blight

为了验证40%已唑醇·嘧菌酯SC对水稻纹枯病的防治效果,在黑龙江省农业科学院佳木斯分院试验地进行田间试验。试验结果表明:40%己唑醇·嘧菌酯SC对水稻纹枯病有较好的防治效果,发病初期连续施药2次,间隔15 d,对纹枯病最高防效为80.13%,经方差分析,处理药剂48 g(a.i.)/hm^(2)与对照药剂40%嘧菌酯SC防效相当,显著高于对照药剂40%己唑醇SC,处理药剂72、96 g(a.i.)/hm^(2)剂量下的防效与对照药剂防效达到差异极显著水平,且对供试作物安全。适用剂量以48~96 g(a.i.)/hm^(2)为宜。

To verify the field control effect of 40%Hexaconazole·Azoxystrobin SC on rice sheath blight,field efficacy tests were conducted in Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences.The results showed that 40%Hexaconazole·Azoxystrobin SC provided good control effect against rice sheath blight,applied 2 times with 15 days interval.The highest control effect was 80.13%.The treatment doses of 48 g(a.i.)/hm^(2) was similar to 40%Azoxystrobin SC,which was significantly higher than 40%hexaconazole SC.The control effect of treatment at the doses of 72,96 g(a.i.)/hm^(2) were significantly difference between the treatment and the contrast.No crop injury was observed.The recommended dose of 48-96 g(a.i.)/hm^(2) in the field.