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中国马尾松林现有面积为2300万公顷,约占全国林地总面积的20％。80年代权威方面曾估计公元2010年后年产松材可达10100万立方米,现在看来这个目标很难达到。障碍因素有四:1)忽视种子播种品质,2)造林立地过于贫瘠,3)过度打枝和樵采林下植被,4)大面积纯林。这些因素合在一起,造成松树生长不良,树干弯曲,虫害严重。本文侧重讨论虫害问题。
The existing area of Pinus massoniana in China is 23 million hectares, accounting for about 20% of the total forest area in China. In the 1980s, authorities had estimated that the output of loose wood could reach 101 million cubic meters after 2010, and it seems unlikely that this goal will be achieved. Barrier factors are four: 1) ignore the quality of seed sowing, 2) too poor barren stand, 3) excessive grafting and firewood plantation, 4) large area of pure forest. Together, these factors contribute to poor growth of pine trees, curving tree trunks and serious insect pests. This article focuses on pest problems.