论文部分内容阅读
木茹苗圃位于道孚县木茹林区,春季解冻迟,霜期长。晚秋降温早,土壤结冻快,露天育苗只能春播,1年生苗木质化程度低,越冬死亡率高。因此我们在总结塑料大棚春播育苗经验的基础上,1980年8月进行了大棚秋季播种育苗,次年秋季移床培育试验。解决了在高海拔地带秋季育苗的降温和病害问题。缩短了苗木培育时间,提高了产苗量,降低了育苗成本,大棚每亩1年生苗可移植10亩,每亩成本仅为357元,露天培育2年生苗,1亩只移2.5亩,每亩成本达1336元,约为大棚的4倍。大棚内一年生鳞皮云杉,平均苗高4.28厘米,基径0.085厘米,叶片67片,主根长约9厘米,千株苗地上部分
Mu Ru nursery is located in Doodu Mu Ru Lin District, thawed in the spring, the long frost. Late autumn and early cooling, quick freezing soil, open-air seedlings can only be sowed in spring, l-year low lignification, overwintering mortality. Therefore, on the basis of summing up the experience of spring planting seedling nursery in plastic shed, we conducted seedling nursery in autumn in August 1980 and nursery bed nurturing in autumn. Solve the problem of cooling and diseases of seedlings in autumn in high altitude. Shorten the seedling cultivation time, increase the production of seedlings, reduce the cost of nursery, greenhouse per acre 1 year transplant 10 acres of plants, the cost per acre is only 357 yuan, open-air 2-year-old seedlings, 1 mu only move 2.5 acres, each Mu costs up to 1336 yuan, about 4 times the greenhouse. Greenhouse annual spruce spruce, the average height of 4.28 cm, base diameter of 0.085 cm, 67 leaves, the main root length of about 9 cm, a thousand seedlings above ground