花生叶斑病包括黑斑[Cercosporapersonata(Berk et curt)Ell]和褐斑(C.arachidicola Hori),此病多在花生生长中、后期发生,引致植株严重落叶,一般产量损失10—20％,严重的在20％以上。由于叶斑病在通常情况下,为害时间长达三个月,过去又缺乏效果好,残效期长,成本低的药剂品种,药剂防治效果不明显。1985—1986年开展了药剂防治叶斑病的小区及大面积试验,比较数种药剂防治叶斑病的效果及使用技术。其中以新农药“丰米”防病增 Peanut leaf spot disease includes Cercosporapersonata (Berk et curt) Ell and C.arachidicola Hori, which occur mostly in the peanut during and after the peanut bloom, resulting in severe deciduous leaves with a general yield loss of 10-20% Serious in 20% above. As leaf spot disease under normal circumstances, the damage time of up to three months, in the past the lack of good effect, long residual period, low cost varieties of agents, the effect of chemical control is not obvious. From 1985 to 1986, the district and large-area trial of leaf spot prevention and cure were carried out to compare the effects of several agents against leaf spot disease and to use the technology. One of the new pesticides, “Toyomi” disease prevention increased