过去防治梨黑星病,常用波尔多液,但该药对慈梨、鸭梨、酥梨等幼果易产生严重果锈,且限制与多种农药混用。77年我们改用日本进口的1000倍50%甲基托布津可湿性粉剂防治该病,不但无果锈产生,且防效 In the past prevention and treatment of pear scab, commonly used Bordeaux mixture, but the drug on Civen, pear, pear and other young fruit easy to produce serious rust, and limit the use of a variety of pesticides. 77 years, we use Japan imported 1000 times 50% thiophanate-methyl WP to prevent and cure the disease, not only rust-free produce, and anti-efficacy