50%嘧霉胺·多菌灵WP防治番茄灰霉病田间药效试验

目的]明确50%嘧霉胺.多菌灵WP对番茄灰霉病的防治效果和安全性,选择其在田间的适宜用量,为该农药的推广应用提供科学依据。方法]设置了不同浓度和与其他药剂对比的7个处理,研究各处理对防治番茄灰霉病的田间药效。结果]结果表明,用50%嘧霉胺.多菌灵WP 600 g/hm2防治番茄灰霉病,对叶片和果实的防效分别为82.3%和81.5%,显著高于对照药剂40%欧诺SC 480g/hm2、30%齐乐WP 1 050 g/hm2和50%多菌灵WP 1 000 g/hm2的防效。结论]在用量450~600 g/hm2的情况下,该农药防治效果可达70%~85%,对作物安全。

Field Efficaccy Trial on Controlling Tomato Grey Mould with 50% Pyrimethanil·Carbendazol WP

Objective] The study aimed to confirm the controlling effect and security of 50% pyrimethanil.carbendazol WP on tomato grey mould, select its suitable dosage in field so as to provide scientific basis for the popularization and application of the pesticides.Method] 7 treatments(4 repetitions) of the pesticide with different concentrations and treatments of the other pesticides were set up to study the field efficacy of every treatment on controlling tomato grey mould.Result] The effects of controlling tomato grey mould on leaf and fruit with 50% pyrimethanil.carbendazol WP at 600(g/hm2) were 82.3% and 81.5% resp.,significantly higher than that of CK pesticides of 40% Onuo SC at 480 g/hm2,30% Qile WP at 1 050 g/hm2 and 50% carbendazol WP at 1 000 g/hm2.Conclusion] Under the condition with dosage at 450～600 g/hm2,the controlling effect of the pesticide could reach 70%～85%,which was safe to crops.