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为了进一步明确水稻破口前喷施杀菌剂对防治水稻纹枯病的效果,通过田间小区试验研究了4种新型杀菌剂对水稻纹枯病的防效,以及药剂对水稻安全性及产量的影响。结果表明:水稻破口前3 d,施用1次4%四氟醚唑EW(30.0 g/hm2)或10%多抗霉素WP(150.0 g/hm2)或300g/L苯甲丙环唑EC(67.5 g/hm2)对纹枯病的防效较好,施药21 d后防效均在62%以上;且4种药剂对水稻植株安全可靠,无药害;各处理的产量比对照增加10.39%~16.37%,经济效益较好。
In order to further clarify the effect of spraying germicide before spraying on the control of rice sheath blight, the effects of four new germicides on sheath blight of rice and their effects on the safety and yield of rice were studied by field plot experiments . The results showed that 4% tetraconazole EW (30.0 g / hm2) or 10% WP (150.0 g / hm2) or 300 g / L carbamethoxazole EC (67.5 g / hm2) had a good control effect on sheath blight. The control effect was over 62% after 21 days of application. Four kinds of medicaments were safe and harmless to rice plants, and the yield of each treatment was increased 10.39% ~ 16.37%, the economic benefit is better.