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1、选用抗病性强、生长健壮、无感染的苗木造林。 2、及时剪除幼嫩病枝。可在5～6月间修除小病枝或于秋冬季节修除残留的病枝。修除时不要留病残桩或损伤健康枝,伤口涂土霉素和凡士林(1:9)药膏,然后用塑料布包扎好。 3、药物治疗。用1万单位的盐酸(或硼酸)土霉素(或四环素)药液防治。具体作法是:①苗木高生长停止期注药预防。一般9月中下旬进行,在苗干距地面约1米高处注药液20～25毫升于髓心内。注药苗移栽后很少发病。②对发病的平茬苗、幼树,在5～6月间向嫩茎髓心内注药物25～40毫升,可治愈或减轻病情。③对3～5年生病树,可在3月树液流动前,于干基部刮去老皮并钻孔一周插入药捻,然后以吸有药液的湿棉花包扎,以塑料薄膜密封使药渗入韧皮部及木质部,也有一定疗效。④断根吸收。在距树干茎部50厘米处挖开土壤,将1厘米粗细的根截断,插入含1～2万单位土霉素溶液的瓶内,经一定时间吸收后也
1, the selection of disease resistance, robust growth, no infection of seedlings afforestation. 2, cut the tender disease branch in time. May be in 5 to 6 months to repair minor branches or in the autumn and winter to repair the remaining diseased branches. When repairing, do not leave a stump or damage healthy branches, wounds with oxytetracycline and vaseline (1: 9) ointment, then wrap with plastic sheeting. 3, drug treatment. With 10,000 units of hydrochloric acid (or boric acid) oxytetracycline (or tetracycline) liquid control. Specific practices are: ① high growth seedling stopping injection drug prevention. Generally in late September, in the Miao Gan from the ground about 1 meter high injection liquid 20 to 25 ml in the medullary heart. Note that after injection of seedlings rarely disease. ② on the incidence of stubble seedlings, young trees, between 5 to 6 months to tender stem medullary injection of drugs 25 to 40 ml, can cure or reduce the disease. ③ for 3 to 5 years of diseased trees, in March before the flow of sap flow, scrape the old base in the dry base and drill a week into the drug twisting, and then to absorb the liquid wet cotton wrap, sealed with plastic film to make medicine Infiltration phloem and xylem, but also a certain effect. ④ cut off root absorption. 50 cm away from the trunk of the tree dug soil, the root of 1 cm thick cut off, insert 1 to 2 million units of oxytetracycline solution bottle, absorbed after a certain time