1991年9月,“三北”局在宁夏举办“三北”地区旱作造林技术培训班。有关省、地介绍了旱作造林成功经验,有些经验值得我们学习借鉴。各地实践表明,要大范围大幅度地提高首都周围绿化工程造林质量,达到保活、速生、丰产的目的,根本出路在于:大力推广旱作林业丰产技术,坚定不移地实行以旱作林业为主的方针。 In September 1991, the “Three Norths” Bureau held a training course on afforestation and reforestation in the “Three Norths” area in Ningxia. Relevant provinces and places introduced the successful experience of dry-land afforestation, and some experiences deserve us to learn from. Practices in various places have shown that the fundamental way out for large-scale and substantial improvement of the afforestation quality of greening projects around the capital, and for the purpose of preserving livelihood, quickening growth and high yield lies in vigorously promoting the high-yielding techniques of dry farming and forestry, Lord’s principle.