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我省西部地区是国家重要的商品粮基地,但由于森林覆被率低、气候失调、风沙干旱严重,威胁着农业生产。为改变这一状况,必须加速防护林建设。我省西部地区春秋两季多西南风和西北风,风力常达5—6级,甚至7—8级,年降雨量为400—500毫米,年蒸发量为1400毫米,年蒸发量大于降水量3—4倍,春季早风经常吹走农田表土、种子和肥料,严重的威胁农业生产。回顾营造防护林的历史,早在1950年原东北人民政府林业部会同各省调查队,就进行了规划设计。当时是南起辽宁的白旗堡北至黑龙江泰来县的江桥公社,每10公里垂直
The western region of our province is an important commodity grain base in the country. However, due to the low rate of forest cover and the climatic disturbance, the wind and sand are in serious drought and threaten agricultural production. In order to change this situation, we must speed up the construction of shelterbelt. Spring and autumn in the western region of our province more than the southwest and northwest winds, wind often up to 5-6, or even 7-8, the annual rainfall of 400-500 mm, the annual evaporation of 1400 mm, the annual evaporation is greater than the precipitation 3-4 times. Spring morning wind often blows topsoil, seeds and fertilizer from farmland, which seriously threatens agricultural production. Recalling the history of shelterbelts, as early as 1950, the Former Northeast People’s Government Forestry Department together with the provincial investigation team conducted planning and design. At that time, it was from the south of Baijibao in Liaoning Province to the Jiangqiao commune in Tailai County, Heilongjiang Province, perpendicular to every 10 kilometers