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为了经济有效地防治温室黄瓜霜霉病,1990年春季,我们用农林部研制的百菌清粉尘剂药剂,对防治早春温室黄瓜霜霉病进行药效试验,并取得了良好的效果。现将结果初报如下: 一、黄瓜霜霉病发病前施药效果试验地设在呼市郊匚前不塔气村,温室黄瓜定植期为4月8日,品种是山东密刺。于5月15日开始第一次喷粉尘药剂,每隔10天喷一次,共喷三次。于6月25日调查,共查植株160株,查总叶数3200～3500片叶。据喷药后调查结果看,喷施粉尘
In order to economically and effectively control greenhouse cucumber downy mildew, in the spring of 1990, we used Chlorothalonil Dust Agent developed by the Ministry of Agriculture and Forestry to carry out the efficacy test on cucumber downy mildew in early spring and achieved good results. First, the results reported as follows: First, the cucumber downy mildew disease before the onset of drug effects test is located in the suburbs of Huhhot not Tau gas village, greenhouse cucumber colonization period is April 8, the species is Shandong stichopus. On May 15, the first powder dusting agent is sprayed once every 10 days for a total of three times. The survey on June 25, a total of 160 plants surveyed, check the total number of leaves 3200 ~ 3500 leaves. According to the survey results after spraying, spraying dust