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爱福丁防治梨木虱效果好试验于１９９６年８月２５日在本市田家庄村梨园进行，药剂选用北京农业大学新技术开发总公司农药厂生产的１８％爱福丁５０００倍液，５％氯氰菊酯２０００倍液；４０％水胺硫磷１５００倍液。每种药剂用苏农３６泵喷施１０株，喷药后第３天进...
Love blessing prevention and control of pear psylla good effect test in August 25, 1996 in the city of Tianjiacun Liyuan, pharmacy use Beijing Agricultural University New Technology Development Corporation Pesticide Factory 1 8% of aphrodin 5000 times 5 Cypermethrin 2000 times the liquid; 40% ammonium thiotecon 1500 times. Each pesticide spraying pesticide 10 10, 3 days after spraying into ...