科技兴林步步高赖寿元海南省琼山市坚持科技兴林方针，使造林绿化长足发展。截至１９９４年底，森林面积达１４０万亩，与１９８１年相比，森林覆盖率从１７．９％提高到４６．２５％，活立木蓄积量、林木年生长量、林业经济收入分别长３倍、３．５倍和７倍。１９８８年海... Scientific and technological development at a higher level Lai Shouyuan Hainan Province, Qiongshan adhere to the principle of science and technology to promote forest so that the rapid development of afforestation. By the end of 1994, the area of ​​forest reached 1.4 million mu, compared with 1981, the forest coverage rate increased from 17.9% to 46.25%. The volume of live standing trees, the annual growth of trees and the economic income of forestry were respectively 3 times of that of 1981, 3.5 times and 7 times. 1988 sea ...