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苹果树腐烂病病菌属弱寄生菌,具潜伏侵染的特性,发病因素比较复杂,管理不当很容易发病,由于生产中有效的防治药剂还不多,历年来防治一直很困难。1987年至1988年,我们对河北省科学院微生物所研制的防治腐烂病新药抗生素S-921进行了效果试验,证明了S-921的防治和预防效果。一、材料与方法1.药剂来源:河北省科学院微生物研究所提供的抗生素S-921 2.田间试验:试验设在卢龙县饮马河乡郑庄村18年生苹果园,主栽品种为金冠,腐烂
Apple tree rot pathogen is a weak parasitic bacteria, with latent infection characteristics, the incidence of more complex, inappropriate management is easy to disease, as effective in the production of control agents are not many, prevention and treatment over the years has been very difficult. From 1987 to 1988, we conducted an efficacy test on the antibiotic S-921, a new antibacterial agent against rot disease developed by the Institute of Microbiology, Hebei Academy of Sciences, and proved the preventive and preventive effects of S-921. I. Materials and Methods 1. Pharmacy Source: Institute of Microbiology, Hebei Academy of Sciences provides antibiotics S-921 2. Field Test: The experiment is located in Lulong County Yin Mahe Township Zheng Zhuang Village 18-year-old apple orchard, the main varieties for the Golden Delicious, rot