论文部分内容阅读
由于林业的迅速发展,本区的苗木满足不了造林需要,而松树直播既省工成本又低,方法简便,容易使广大职工群众掌握,所以本林区自1964年以来,松树直播造林达2千1百多亩。油松、华山松直播造林,因受各种因子的影响,效果差异很大(保苗率好的在95%以上,差的仅10%)。从本区自然特点来看,水份条件较好,所以影响种子发芽的主要因子是温度;而播种后出苗成活的好坏,在很大程度上又取决于出苗前后乌兽危害(特別是鼠害)是否严重。根据我们的经验,提高松树直播成活率的几项措施是:
Due to the rapid development of forestry, seedlings in this area can not meet the needs of afforestation. However, the live broadcasting of pine trees not only reduces the labor cost but also lowers the method cost, which is easy for the masses of workers and staff to master. Therefore, since 1964, 1 hundred acres. Pinus tabulaeformis, Pinus armandi direct broadcast afforestation, due to a variety of factors, the effect varies greatly (seedling rate is good in 95%, poor only 10%). From the natural characteristics of this area, the water conditions are good, so the main factor affecting the germination of the seed is the temperature; and the survival of seedling after sowing is good or bad, to a large extent, depends on the emergence of the beast before and after the harm (especially rats Harm) is serious. According to our experience, several measures to improve the live survival rate of pine are: