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马尾松是我省盆地飞播的主要树种.1963—1980年期间共飞播340万亩,为我省同期飞播总面积24.8%.1981—1985年期间飞播143万亩,为同期飞播总面积的33%(不包括马尾松与其它树种的混播面积),近年来马尾松飞播比重仍在继续增大,预计未来三、五年内高海拔飞播树种试验未取得突破性的进展以前,马尾松将占重要的位置.根据统计资料,我省飞播投资每亩2元左右,种子费约占飞播经费开支的77%.降低飞播成本的关键在于降低种子费用.我省飞播马尾松每亩用种量多年来停留在半市斤水平上,近年设计用种量每亩降到
Masson pine is the main species of aerial seeding in the basin of our province, covering a total area of 34.8 million hectares during the period from 1963 to 1980. It covers an area of 24.8% during the same period of our province and covers an area of 1.43 million mu between 1981 and 1985, representing 33% (Excluding the mixed area of Pinus massoniana and other tree species), the proportion of aerial masson pine in recent years has continued to increase. It is estimated that before the high-altitude aerial seeding trial in the next three to five years does not make any breakthrough, masson pine will take up an important Location.According to statistics, the province investment about 2 yuan per acre, the cost of seed accounts for about 77% of the expenditures for aerial expenses.Reduce the cost of aerial sowing is to reduce the cost of seeds. In the half-catty level, in recent years, the amount of design used per acre fell