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本文介绍了齿叶山杨、响叶杨、毛白杨、山杨在长江中游丘陵岗地的物候期、林木高生长节律。调查了造林成活率、12 a 生林木保存率、速生性及林分的抗病抗虫性。研究了小×大叶杨、齿叶山杨杂交种(株系)在高海拔(1 500 m)地区的抗病性和速生性。
In this paper, the phenophase of Populus euphratica, Populus sibirica, Populus tomentosa and Populus euphratica in the hillocks in the middle reaches of the Yangtze River are introduced, and the high growth rhythm of trees is introduced. Survival rate of afforestation, preservation rate of 12-year-old trees, fast-growing and disease and insect resistance of stand were investigated. The disease resistance and fast growth of small × Populus euphratica and Populus tomentosa hybrids at high altitude (1 500 m) were studied.