【摘要】 经试验研究,普力克对黄瓜霜霉病菌孢子囊萌发的抑制效果最好,稀释度为400倍时抑制率达到82.30%,EC50为1202.3μg/ml;其次为杀毒矾;效果最差的为乙磷锰锌,800倍时对霜霉病菌孢子囊的抑制率只有2.12%,EC501949.8μg/ml。在大棚内防效也有显著的差异,普力克在田间对黄瓜霜霉病的防效最高,达93.71%,且药效持久、稳定;杀毒矾的防效次之;乙磷锰锌的防效最差,仅为24.28%。每种药剂不仅对黄瓜霜霉病有一定的防治效果,且具有显著的增产效果。更多还原

【Abstract】 Six fungicides were implied to control effect of pseudopronspora cubensis .Through field trials, the result showed that propamocarb had the best inhibitory effect on sporangia germination. Inhibitory rate was 82.3% with dilution of 400 times (EC50 1202.3ug/ml). Inhibitory effect of oxadixyl mancozeb was better than the others. Phosethyl-Al mancozeb was the lastest, inhibitory rate was only 2.12% if it was with dilution 800 times (EC501949.8ug/ml).The control efficacy had also significant difference in plastic house. Propamocarb had the best control effect on pseudopronspora cubensis ,which reached 93.71% ,and was enduring and stable. Oxadixyl mancozeb is the second. Phosethyl-Al mancozeb was the worst, control effect was only 24.28%,Additionaly, each fungicide not only had certain control effect but also could significantly increasing production.更多还原