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柑桔溃疡病Xanthomonas citri(Hasse)Dowson是一种很顽固的病害,受害的柑桔树常发生严重的落叶、落果,树势衰弱,直接影响柑桔产量和品质;该病传染性很强,一旦发生就会整片柑桔园流行。 1990年5月我们选择飞云江农场和上望乡的两片柑桔园,品种分别是“哈姆林”和“血柑”。农药用加瑞农、农用链霉素、铜氨合剂、碳酸氢铵等农药的不同浓度分别防治4次,以喷水作为对照共设9个处理,3次重复。喷药时间为5、6、8、9月中下旬,每亩
Citrus canker disease Xanthomonas citri (Hasse) Dowson is a very stubborn disease. Citrus trees often suffer from severe deciduous, deciduous, declining shrubs and directly affect citrus yield and quality. The disease is highly contagious, Once there will be the whole piece of citrus garden popular. In May 1990, we selected two citrus orchards of Feiyunjiang Farm and Shangwang Township. The varieties are “Hamlin” and “Xuegan”. Pesticides with Garrett, agricultural streptomycin, copper ammonia mixture, ammonium bicarbonate and other pesticides were treated with different concentrations of four times, with water as a control a total of nine treatments, three replicates. Spraying time is 5, 6, 8, 9 months late, per acre