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由自治区林业厅和贺兰县科委共同主持的“贺兰县大面积杨树秋季植苗造林成活率的研究”成果鉴定会,于1985年11月28日在贺兰县召开,参加会议的有区内有关专家和科技人员共30余人。贺兰县1984年秋季造林64.6万株,全苗成活率稳定在87％以上,其主要技术措施是:适地适树,选用充分木质化的壮苗,深栽50厘米以上,适时灌好冬水,保证根系完整等,从而提高了成活率。该研究证明,在宁夏引黄灌区秋季造林时间长、劳力充裕,来年春季发根早、根量大、生长量大等优点。
By the Autonomous Region Forestry Department and Helan County Science and Technology Commission co-chaired the “Helan County large area poplar planting seedlings in autumn survival rate of success,” the results appraisal meeting, held in Helan County on November 28, 1985, attended the meeting there There are more than 30 experts and technicians in the area. Helan County, 1984 autumn planting 646000, the survival rate of more than 87%, the main technical measures are: suitable tree, selection of full lignification of strong seedlings, planting more than 50 cm deep, timely irrigation in winter Water, to ensure complete root, etc., thereby increasing the survival rate. The study proves that in Ningxia Yellow River Irrigation Area autumn afforestation time is long, abundant labor, next spring hair root early, large root volume, large growth and so on.