论文部分内容阅读
我场职工遵照毛主席关于“我们必须打破常规,尽量采用先进技术”的教导,从1973年开始,在干旱瘠薄的山地进行了油松营养纸袋育苗造林试验。初步取得经验后,1975年育苗63万袋,造林773亩,补植造林600亩,当年9月调查,平均成活率为91.6％,次年5月调查大南背210亩,保存率为78％,苗高6-8厘米,根系发达,主根长15-20厘米,顶芽茁壮。1976年又育苗40万袋,造林721亩,补植造林285亩,当年12月上旬调查平均成活率为70％,最高达78％,幼苗生长健壮。几年来的实践证明,营养纸袋育苗造林是战胜恶劣自然环境,提高造
In accordance with Chairman Mao’s teaching on “We must break the routine and try our best to adopt advanced technology”, our field workers started the experiment of seedling nursery afforestation in the arid barren mountainous area since 1973. Preliminary experience gained, 1975 seedlings 630,000 bags, 773 acres of afforestation, replanting afforestation 600 acres, the survey in September that year, the average survival rate of 91.6%, the following year in May to investigate large South back 210 acres, the preservation rate of 78% , 6-8 cm in height, developed roots, the main root length of 15-20 cm, top buds robust. In 1976, another 400,000 bags of seedlings were planted, 721 acres of afforestation and 285 acres of afforestation were afforested. In early December of that year, the average survival rate was 70% and the highest was 78%. The seedlings grew robustly. Practice over the past few years proved that nutrition bagging seedling afforestation is to overcome the harsh natural environment, improve the quality