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融水县的融水乡、融水镇和喹镇有黄龙病发生危害,发病果园达29.4%,发病株率达4.95%,造成一定的产量损失.1988年11月至1989年11月在县农业局院内果园(温州村)进行防治试验.主要技术措施,一是加强水肥管理,增强树势,提高抗病能力,病树比去年减轻;二是防治木虱,1988年调查有木虱株达100%,平均每叶片有2只.在4、6、8三个月,用水胺硫磷、喹硫磷800倍、氧化乐果1500倍喷洒,防治效果在95%以上;三是用四环素注射病树,1000PPm药液高压注射树干38株病树,留7株作对照,结果只有7株有症状出现,防效达81.2%.但注射治疗花工大、成本高(4—5元/株),能控制黄龙病多久,亦尚待观察.
Rongshui County, meltwater Township, melon town and Quzhen Huanglong disease harm, the incidence of orchards reached 29.4%, the incidence rate of 4.95%, resulting in a certain yield loss .1988 November to November 1989 in the county agriculture Bureau of Orchard (Wenzhou village) for prevention and treatment test. The main technical measures, first, to strengthen water and fertilizer management, enhance the tree vigor, improve disease resistance, disease trees than last year to reduce; second is to prevent psyllid, 1988 survey of planthopper 100%, the average of each leaf 2. In 4,6,8 three months, with acetaminophen 800 times, quetiapine 800 times, omethoate 1500 times spraying, prevention and control of more than 95%; third is tetracycline injection Sick tree, 1000PPm liquid high pressure injection of 38 tree disease tree trunk, leaving 7 as a control, the results of only 7 strains of symptoms appear, the control effect of up to 81.2% .But injection treatment Huadong large, high cost (4-5 yuan / strain) , How long it can control the disease, also remains to be seen.