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梨树病害是引起我区黄花梨早期落叶的主要原因 ,严重制约了我区黄花梨的发展。为探索其病害的药剂防治效果 ,有效地控制黄花梨二次花 ,我们于 1999年 6月至 9月在宠江黄花梨示范基地进行了病害的药剂防治试验 ,并取得了一些成效。供试药剂与浓度分别为 :自制铜氨合剂 ;1∶2∶2
Pear tree disease is the main cause of early deciduous pear in our area, which seriously hampered the development of pear in our district. In order to explore the control effect of the disease and the effective control of the second flower of Huanghua pear, we carried out the experiment of prevention and control of the disease in Peking Huanghua Pear demonstration base from June to September 1999, and achieved some results. Test agents and concentrations were: homemade copper ammonia mixture; 1: 2: 2