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杨树插干钻孔深栽造林技术是中国林科院林科所于1980年从意大利引进的一种抗旱造林法,它显示了明显的抗旱能力,受到许多生产单位的欢迎.为了探索这一造林方法在降雨稀少、缺少灌溉条件而地下水充足的干旱地区的可行性,宁夏林业技术推广总站从1983年至1984年,在贺兰县和永宁县贺兰山东麓的洪积扇,海拔1070～1234米的温带半荒漠地带,非灌溉区布了五个点,该区具有典型的大陆性气候特点,干旱少
Poplar Drill Drilling Drilling Deep planting technique is a drought-resistant afforestation method introduced by Italy’s Forestry Bureau of China Academy of Forestry in 1980. It shows obvious drought resistance and is welcomed by many production units. To explore this Afforestation Method In the rare rainfall, the lack of irrigation conditions and the availability of adequate groundwater in arid areas, Ningxia Forestry Extension Station from 1983 to 1984, in Helan County and Yongning County, Helan Mountain foothills alluvial fan, elevation 1070 ~ 1234 meters of temperate semi-desert, non-irrigated area cloth five points, the area has a typical continental climate characteristics, less drought