防治桃缩叶病新药剂的初步探索

挑缩叶病以往的防治药剂主要是石硫合剂或波尔多液。但因购买原料及配制比较麻烦，本地果农不爱采用。本试验针对这一需要，以果病灵、退菌特、代森锰锌、多菌灵4种杀菌剂进行田间对比试验，结果，以江苏省农科院植保所复配的呆病灵防效最好，单株病叶数仅29．78片；退菌特略有效果，单株病叶数平均110．22片；多菌灵和代森锰锌药效最差，单株病叶数平均高达328．89片和363．33片。为此，建议今后大面积采用果病灵进行防治。

Seek for New Fungicide t0 Control Peach Leaf Curl

Lime sulfar or bordeaux mixture was used to control peach leaf curl. But farmers didn't prefer it for its inconvenient buying and making up. We make field experiment to seek for another fungicide. Comparing their control effect among Guo-bing-ling, Tuzet, Mancozet and Sanmate, we've found that Guo-bing-ling, compounded by Jiangsu Academy of Agricultural Science, has a best control effect. Tuzet shows somewhat effect. Sanmate and Mancozet are worst, the disease leaves per tree successively are 29. 78, 110. 20, 382. 89 and 363. 33. We propose Guo-bing-ling be used to control this disease on a large scale.