多菌灵拌种可有效防治花生病虫害

　　提到花生病虫害防治，我想很多朋友想到的都是对花生苗进行施药，其实一种更好的方法是用杀菌剂拌种，这种方法不仅可以防治花生病虫害，还能提高花生的产量，可谓一举两得。

　　一、药土拌种：用50%多菌灵可湿性粉剂，每50公斤种子用成药0.15——0.25公斤(按有效成分计算为0.075——0.125公斤)，将药粉与细干土2.5——5公斤混匀，配成药土。花生种子先用水淘洗潮湿，然后再分层与药土拌和，要使每粒花生种子都均匀沾上药土，拌药土后可立即播种。

　　二、药液拌种：用50%多菌灵可湿性粉剂，每50公斤花生种子用成药0.15——0.25公斤，加清水2公斤配成药液，用喷雾器分别喷洒在花生种子上，使每粒花生种子都均匀地沾上药液，晾干后即可播种。

　　三、药液浸种：用50%多菌灵可湿性粉剂，每50公斤种子用成药0.15-0.25公斤，加清水30公斤配成药液，浸泡花生种子50公斤，冷浸24小时，中间翻动2——3次，浸泡后即可播种。

　　以上方法对防治茎腐病、立枯病、根腐病的效果都在90%以上，拌种和浸种的防病效果没有明显差异，但是考虑到拌种方法简便易行，还是以拌种为好。药剂处理的花生叶片深绿，生长健壮，平均增产30%左右，有的增产50%，甚至一倍以上，最少的也增产10%左右，饱果率增加10——20%，增产的多少随用药量的增加而增加，但是用药量(有效成分)超过种子的1%时有药害，影响出苗。

　　虽然用多菌灵处理花生种子有明显的防病增产作用，但是这种药剂对花生青枯病却没有防病效果。对没有用多菌灵处理花生种子的发病地块，必要时也可以在苗期喷用1000倍药液，防病效果也在90%以上，增产10%以上，用500倍药液灌根也有一定的效果。

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