甲霜•噁霉灵在控制西兰花苗期猝倒病上的应用价值初探

摘要

田间试验结果表明，30%甲霜•噁霉灵水剂对西兰花苗期基部猝倒病具有较好的防治效果，药效随着用药倍数的加大而上升，施药后16 d 30%甲霜•噁霉灵水剂1500倍、2000倍的校正防效分别达78.75%、73.33%，其中2000倍的效果分别比对照药剂72.2%霜霉威盐酸盐水剂600倍、3%噻霉酮可湿性粉剂600倍高出3.12、24.64个百分点，且安全性好，因此可以在生产上加以推广应用。%Field efficacy trials indicated that metalaxyl-hymexazol 30%AS had good effects on controlling broccoli damping-off. The disease preventing efficiency grew with the increases in dose, with the efficiencies up to 78.75% and 73.33%, respectively, 16 days after spraying (1 500×, 2 000×). The controlling effect of metalaxyl-hymexazol 30% AS (2 000×) was higher than propamocarb hydrochloride 72.2% AS (600×) and benziothiazolinone 3% WP (600×) by 3.12% and 24.64%. More importantly, metalaxyl-hymexazol 30% AS was safe to humans. So its application can be widely developed and popularized.