湖北林业科技

Survey screening is an important basic work of the forest introduction and domestication in early stage.The authors surveyed the disease resistance of 18 clones of 7-year-old precocious Juglans regia L. varieties that introduced form the north Juglans regia L.producing area and the cold-resistant of 10 Jug- lans regia L.varieties that came from the south of China,which are planted in western Hubei.The varieties of Juglans regia L.:Liaoning 1,Luguang,Xiangling,Yuanfeng,Zhonglin and Yunza series from Yunnan, Hebei,Shandong and Liaoling respectively are used regionlization test by integrated comparison between the weather condition of the western Hubei and others walnut producing area in China.In the end,the system- atic research of choosing an adaptable region of different Juglans regia L.varieties is suggested.