几种药剂混配防治西兰花根部病害综合效果试验

为了有效防治西兰花根肿病、根腐病、根结线虫病等根部病害,提升西兰花的产量和品质,采用灌根法进行几种药剂混配防治西兰花根部病害田间药效试验,结果表明:6 8%精甲霜锰锌WG 500倍+3.2%阿维菌素EC 1 000倍+微补精力600倍+微补根力钙600倍对西兰花根部病害具有较好的综合防治效果,其中连续2次灌根后50 d的校正防效达82.1%,分别比68%精甲霜锰锌WG 500倍+3.2%阿维菌素EC 1 000倍、5%石灰氮GR 1 200 kg/hm2高出5.6%、21.3%,持效期较长,安全性好,因此可以在生产上加以推广应用。

Control Efficacy of Insecticides Mixture on Broccolis

The purpose of the trial was to control clubroot disease,ceitocybe bescens,root knot nematode disease of broccoli,in order to promote the broccoli production and quality.Mixture of several insecticides was used on broccoli by root-irrigation method in this trail.The result showed that the mixture of 68% Mefenoxam-Mancozeb WG 1： 500 plus 3.2% Avermectins EC 1：1 000 plus 425 g/L MNPK-38 g/L Calcium 1： 600 and 160 g/L Calcium 1： 600 had better control effect on Broccoli root diseases,and the 50 days’ correction control effect after two consecutive root-pouring reached 82.1%,which was higher than that of the mixture of 68% Mefenoxam-Mancozeb WG 1： 500 plus 3.2% Avermectins EC 1： 1 000 and that of 5% Calcium Cyanamide GR 1 200kg/hm2 by 5.6% and 21.3%,respectively.With longer effective lasting period and better security,this mixture can be demonstrated to apply to the practical production.