论文部分内容阅读
蔬菜具有生产周期短、病虫种类多、用农药较频繁的特点,蔬菜上农药残留问题已引起人们极大的重视,我们对生物农药苏云金杆菌83-1菌剂经过4年研究试验,已在全市大面积推广。 用800-1000倍苏云金杆菌83-1菌剂防治菜青虫,以三龄前初龄幼虫期喷药最佳。为增加展着性,可加入1％洗农粉,药液随配随用,喷药均匀,防效可达95％以上,最高达100％。喷药后12小时内遇大雨需重喷。菜青虫中毒后立即停止为害,吐绿水,最后变黑死亡。在虫情盛发季节5至6天喷药一次,连喷2至3次即可控制危害。
Vegetables with short production cycle, many pests and diseases, with more frequent pesticides, pesticide residues in vegetables has caused great concern people, we biopesticides Bacillus thuringiensis 83-1 after 4 years of research experiments, has been The city’s large-scale promotion. With 800-1000 times Bacillus thuringiensis 83-1 fungicide against Pieris rapae, to the third instar before the first instar larvae spraying the best. In order to increase the exhibition, you can add 1% detergent powder, with the liquid medicine with the spray, spray evenly, the control effect of up to 95%, up to 100%. In case of heavy rain within 12 hours after spraying, re-spray is required. Pieris cicadae poisoning immediately stop harmful, spit green water, eventually black death. Insect season Sheng season 5 to 6 days to spray once, and even spray 2 to 3 times to control the hazard.