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冀县林业局自1987年以来,每年5月上旬至8月底在苹果、梨和桃树上喷施锌灰液,一般20天左右喷一次,效果很好。锌灰液按重量配比方法:硫酸锌1,生石灰2,水250,然后混入乙烯醇液或面浆。使用三年来的实践说明,喷施锌灰液有以下作用和效果:一、锌灰液能防治炭疽病、落叶病、轮纹病和梨黑星病;由于有锌元素,还能防治苹果小叶病。二、喷锌灰液能避免使用波尔多液对苹果产生的锈病。三,喷锌灰液不仅能减少80—92％以上
Ji County Forestry Bureau since 1987, every year in early May to the end of August spraying apple, pear and peach tree ash liquid, usually spray about 20 days, the effect is very good. Zinc ash solution by weight ratio method: zinc sulfate 1, quicklime 2, water 250, and then mixed with vinyl alcohol or pasta. The use of three years of practice shows that spraying zinc ash has the following effects and effects: First, zinc ash solution can prevent anthracnose, deciduous disease, rotten grain and pear scab; due to the zinc element, but also the prevention and control of apple leaflets disease. Second, zinc spray liquid can avoid Bordeaux mixture of apple rust. Third, zinc spray liquid can not only reduce 80-92%