哈密瓜生长期果实腐烂病药剂筛选及其防治

Fungicide Screening and Control of Hami Muskmelon Fruit Rot at Growth Stage in Xinjiang

针对从哈密瓜分离得到造成哈密瓜生长期果实腐烂病的病原菌 ,采用纸碟法等方法 ,使用农用链霉素等 8种杀菌剂对该病原菌及其田间危害进行了药剂筛选。室内药剂筛选结果表明 :BF～ 115 0 0倍的药液产生抑菌圈最大 ,平均半径为 14 .8mm ,其次 ,强力高酮 15 0倍产生 6 .3mm的抑菌圈 ,DT 5 0倍产生 6 .2mm的抑菌圈 ,TCCA 2 0 0倍产生 4 .5mm的抑菌圈 ,消菌灵 2 0 0倍产生 2 .5mm的抑菌圈。田间药效结果表明 ,试验所选用的药剂中以BF 1、农用链霉素、消菌灵、DT防治效果较好 ,防治效果分别为 5 9.73%～ 88.2 6 %、5 8.4 3%～ 83.15 %、4 6 .5 6 %～ 72 .88% ,医用链霉素防效为 6 8.30 % ,白霉素防治效果为 4 2 .19%。

In 1999～2002,fungicide screening had been produced in lab and field experiment against the pathogen of Hami muskmelon fruit rot at growth stage in Xinjiang,the result showed that BF-1 (1500×) could form the biggest inhibiting zone-14.8mm(rd) than others on NA plate.Control effect of 8 fungicides had been assessed in field test, such as BF-1,Streptomycin sulfate,xiaojunlin,DT and so on.The control effects of BF-1,Streptomycin sulfate,Xiaojunling and DT were better than other fungicides in all fungicides supplied,their control effect were 59.73%～88.26%、58.43%～83.15%、46.56%～72.88% in turn.