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番茄是本地的主要蔬菜品种之一。近几年,由于番茄早疫病病情逐年加重,严重影响了番茄的产量和品质。1984～1989年,因早疫病为害,番茄产量损失20～30％,个别田块达70％。番茄受害后,果实个小、色暗、味差,经济价值随之下降。在防治上,近几年常用多菌灵、甲基托布津、波尔多液等农药,效果较差。自国内市场出现代森锰锌农药后,我们就其对番茄早疫病的防治效果进行了试验示范,结果如下。
Tomato is one of the main varieties of vegetables in the area. In recent years, due to the disease of tomato early blight increased year by year, seriously affecting the yield and quality of tomatoes. From 1984 to 1989, due to early blight, tomato yield loss of 20 to 30%, individual fields up to 70%. After the tomato victimizes, the fruit is small, the color is dark, the flavor is bad, the economic value drops accordingly. In the prevention and control, in recent years commonly used carbendazim, thiophanate-methyl, Bordeaux mixture of pesticides, the less effective. After the emergence of mancozeb in the domestic market, we conducted a pilot demonstration of its control effect on tomato early blight. The results are as follows.