彬州市核桃黑斑病药剂防控试验

Study on the effect of drug control on walnut black spot

用不同稀释倍数的3%中生菌素、12%松脂硫酸铜、5%大蒜素、春雷霉素4种农药进行大田喷药防控核桃黑斑病效果试验。结果表明4种农药均对核桃黑斑病防控效果存在差异,3%中生菌素> 5%大蒜素>春雷霉素> 12%松脂硫酸铜;不同浓度对核桃黑斑病防控效果存在差异,在整体防效上3%中生菌素稀释1 800的浓度下,防控效果最好,达到了84.79%;在叶均防效上3%中生菌素稀释600倍、春雷霉素稀释600倍防控效果最好,分别达到了94%和85.17%。建议在防控时使用3%中生菌素稀释1 800倍,比较经济实惠。

Analysis of variance of control effect of field spraying with 3% mesoctin, 12% copper sulfate, 5% allicin and spring rapamycin at different dilution rates for the prevention and control of walnut black spot disease. The results showed that there were differences in the prevention and control effects of the four pesticides on walnut black spot, which were 3% mesoctin > 5% allicin > ceramycin > 12% copper sulfate. There were differences in the prevention and control effects of different concentrations on walnut black spot. In the overall control effect, the best control effect was 84.79% at the concentration of 3% mesoctin diluted 1800, and the best control effect was 94% and 85.17% at the concentration of 3% mesoctin diluted 600 times and spring rapamycin diluted 600 times, respectively. It is recommended to use 3% mesoctin to dilute 1800 times in prevention and control.