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毛白杨(PoPulus tomentosa Carr),又名大叶杨,是我国特有树种。生长迅速,树干高大通直_材质优于一般杨树,寿命长达百年以上,能长成大材,为黄淮中下游冲积平原和我省主要用材树种之一。据调查在我省立地条件相似情况下,比马尾松、杉木高生长快2.5—3倍,在10—20年间,快50—100％,甚至超过南方生长最快的桉树,深得群众喜爱。由于毛白杨雌株较少,且雌雄花期先后不一,自然授粉不易,种子繁殖受到一定限制,所以大量繁殖多采用扦插法。同时由于
PoPulus tomentosa Carr, also known as Populus euphratica, is endemic to China. Rapid growth, trunk tall and straight _ better than the average quality of poplar, life of up to a hundred years or more, can grow into large timber, the Huanghuai alluvial plain and one of the main timber species in our province. According to the survey in the province of the conditions under similar conditions, than the growth of tall pine, fir high 2.5-3 times in 10-20 years, 50-100% faster, even more than the fastest growing eucalyptus in the South, won the masses favorite. Populus less female plant, and male and female have different florescence, pollination is not easy natural, seed multiplication subject to certain restrictions, so the use of large numbers of propagation multiplication method. At the same time due