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番茄早疫病(轮纹病)是番茄重要病害之一,全国各地均有发生。近年来,由于各地早熟覆膜番茄栽培面积的迅速扩大,此病发生愈来愈早,并且逐年加重,病害大流行年份往往造成番茄严重减产,个别地块甚至全田毁灭。过去,生产上防治此病除采取农业措施外还使用代森锌、多苗灵和托布津等农药进行防治,但防治效果差。据国内外文献报道,代森锰锌对番茄早疫病等多种病害都有良好的防治效果。1985—1986年,我们采用进口及国产代森锰锌,进行了多次室内药效生物测定和大田药效试验,结果一致表明,代森锰锌对番茄早疫病分生孢子的萌发具有明显的抑制作用,田间防病效果
Early blight (Rotavirus) is one of the most important diseases of tomato and occurs throughout the country. In recent years, due to the rapid expansion of precocious tomato covering area around the country, the disease occurs more and more early and increases year by year. The year of disease pandemic often results in serious yield loss of tomatoes and the destruction of individual plots or even fields. In the past, the prevention and treatment of this disease in addition to taking agricultural measures in addition to the use of dexamethasone, more Miao Ling and Topaz and other pesticides for prevention and treatment, but the control effect is poor. According to domestic and foreign literature reports, mancozeb early blight on tomato and other diseases have a good control effect. From 1985 to 1986, we conducted a series of indoor bioassay and field efficacy trials using imported and domestic mancozeb. The results consistently showed that mancozeb has obvious effects on conidial germination of early blight of tomato Inhibition, field disease prevention effect