我国东北、西北、山东、河北、河南等六处防护林带的营造工作,已获得初步成就。在林带开始发挥作用的地区,自然面貌正在改变,农作物产量逐渐增加。东北区西部从1951年开始试造的防护林带,在今春正式开始营造后,连内蒙古自治区营造部分计算在内,又完成34万8千6百多亩。如连1951年以来试造的面积累计起来,共已造林2,195,640亩,林带规模 China’s northeast, northwest, Shandong, Hebei, Henan and other six shelterbelts to create work, has achieved initial success. In the regions where forests begin to play a role, the natural landscape is changing and crop yields are gradually increasing. The shelterbelt experimentally piloted in western part of Northeast China since 1951 started its construction in spring this year. Even after the part of Inner Mongolia Autonomous Region was calculated, it completed another 340,800 acres. If the accumulated area of ​​trial production since 1951 has totaled 2,195,640 mu, the size of the forest belt