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1986年春季,在“2772”工程项目规定地区,辽宁省朝阳市属北票市20个乡和建平县15个乡的范围内,全面开展了项目工程。按项目要求,5年内造林种草70540ha,其中,营造农田防护林1700ha,草地防护林2500ha。1986年为工程起始之年,两市(县)共营造农田防护林539.96ha,草地防护林242.45ha,平均成活率达80%以上。在历经春季50多天的连续干早后,获得如此高的成活率,在该地区以往的造林实践中是罕见的。现将其成活率、生长状况及主要措施等调查结果,整理分析如下。
In the spring of 1986, the project was fully carried out in the area stipulated in “2772” Project Project, Chaoyang City, Liaoning Province, which belongs to 20 townships in Beipiao City and 15 townships in Jianping County. According to the project requirements, afforestation 70540ha within 5 years, of which 1700ha farmland shelterbelts, 2500ha meadow shelter. 1986 was the beginning of the project, the two cities (counties) to create a total of 539.96ha farmland shelterbelts, grassland shelterbelts 242.45ha, the average survival rate of 80% or more. Achieving such a high survival rate after more than 50 days of spring succession is rare in previous afforestation practices in the region. Now the survival rate, growth status and the main measures and other survey results, collated as follows.