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宁夏农垦系统沿贺兰山东麓各农场去冬今春采用大苗截杆机械钻孔深栽新技术造林7,061亩。其中:黄羊滩农场2,800亩;平吉堡奶牛场1,600亩;贺兰山农牧场2461.5亩;农垦科研所200亩。据目前生长情况来看,成活率一般在85—95％以上,生长旺盛,长势喜人。杨树大苗截杆机械钻孔深栽(以下简称大苗深栽)新技术是由意大利引进我国的。1981—1982年在北京、内蒙赤峰市和雁北地区进行的小规模试验表明,大苗深栽显示了明显的抗旱能力和较强的适应性。这项技术于1982年9月通过了小试鉴定,并由中国林业科学院林业研究所和河北林专主持组成了北京、内蒙、河北、宁夏等七省市区杨树深栽
Ningxia agricultural reclamation system along the helan mountain foothills of all farms go winter and spring using big seedling rod mechanical drilling deep planted new technology 7,061 acres of afforestation. Of which: 2,880 acres of Huangyangtan farm; 1,600 acres of Pingji Pu dairy farms; 2461.5 acres of Helan Mountain pasture; 200 acres of agricultural research institutes. According to the current growth situation, the survival rate is generally above 85-95%, vigorous growth, the growth of gratifying. Yang Miao big seedling rod mechanical drilling deep planting (hereinafter referred to as seedlings deep planted) is the introduction of new technologies from Italy. Small-scale experiments conducted in Beijing, Inner Mongolia, Chifeng and Yanbei between 1981 and 1982 showed that deep seeding of large seedlings showed obvious drought resistance and strong adaptability. This technology passed the small experiment appraisal in September, 1982, and was composed of the forestry institutes of Chinese Academy of Forestry and the host of Hebei Forestry College to form the deep planting of poplar in the urban areas of Beijing, Inner Mongolia, Hebei and Ningxia