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将收集到的23个杨树优良无性系,在湖北省谷城县、夷陵区、监利县进行了对比造林试验,结果表明:(1)在谷城选出的长江杨、中嘉7号杨、375杨、鲁山杨4个优良无性系,适合超短轮伐期、中短轮伐期及短轮伐期定向培育栽培;(2)在夷陵试验区选出的鲁山杨、M81—18杨、351杨、375杨、中汉17杨5个无性系,适合超短轮伐期、中短轮伐期和短轮伐期栽培;(3)在监利县选出的长江杨、鲁山杨、303杨、中嘉8号、中汉578杨5个适合超短轮伐期栽培的无性系;中汉17、鲁山杨、375杨、M81-3、长江杨5个无性系适合中短轮伐期栽培;长江杨、鲁山杨、303杨、中汉17、375杨适合短轮伐期栽培;(4)3个试验区相比,无论是平均单株材积还是林分蓄积量,都是监利县最大,谷城次之,夷陵再次之。试验为湖北省杨树在不同区域、不同立地实现定向培育科学栽培提供了良种选择的依据。
The 23 poplar clones collected from Gucheng County, Yiling District and Jianli County in Hubei Province were compared with each other. The results showed that: (1) Yangtze River Yang, Zhongjia 7 Yang, 375 Yang and Lushan were selected and suitable for short-rotation, short-rotation and short-rotation cultivation. (2) Lushan, M81-18 Yang, 351 Yang, 375 Yang, and Chinese poplar 17 clones, suitable for short rotation, short rotation and short rotation cultivation; (3) , Lushan Yang, 303 Yang, Zhongjia 8 and Zhonghan 578 Yang. Five clones were suitable for ultra-short rotation cultivation. Five clones of Zhongyang 17, Lushan, 375 Yang, M81-3, Which is suitable for short and medium-rotation cultivation; Yangjiang, Lushan, 303 Yang, and Zhongyang 17,375 poplar are suitable for short-rotation cultivation; (4) Compared with the three experimental areas, Sub-volume, are the largest Jianli County, Valley City second, Yiling once again. The experiment provided the basis for selection of elite seeds in poplar cultivation in different regions and different sites in Hubei Province.