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杨树腐烂病又称烂皮病,是新植幼树的一种毁灭性病害。目前,农田防护林主栽树种一般用杨树,主要品种有小美旱杨、北京杨、沙兰杨、毛白杨、山海关杨等。由于气候、苗木等诸方面的原因,新植幼树发病率较高。防治腐烂病应从以下几方面入手。 1、选用抗病品种。据我们在1994年5月的调查,小美旱杨发病率为98%,北京杨发病率为64.3%,沙兰杨发病率为63%,毛白杨和山海关杨未发现腐烂病。根据调查结果,在造林时,要尽量选择毛白杨和山海杨这些抗病品种,淘汰抗病性差、发病率高的品种。
Poplar rot disease, also known as rotten skin disease, is a devastating disease of new plantation trees. At present, the main shelterbelts in farmland shelterbelts are poplar, with the main cultivars being Populus euphratica, Populus euphratica, Poplar, Populus tomentosa and Shanhaiguan Yang. Due to climate, seedlings and other reasons, the higher incidence of new plant saplings. Prevention of rot disease should start from the following aspects. 1, the selection of disease-resistant varieties. According to our survey in May 1994, the incidence of young Populus euphratica was 98%, the incidence of Populus euphratica in Beijing was 64.3%, the incidence of Poplar sand was 63%, and that of Populus tomentosa and Shanhaiguanyang was not found. According to the survey results, when afforestation, we must try to choose Populus tomentosa and Populus these disease-resistant varieties, out of poor disease resistance, high incidence of varieties.