论文部分内容阅读
大兴安岭落叶松常规育苗为2年出圃造林。随着育苗新技术的发展和大兴安岭“五六”特大森林火灾后对苗木的急需,原来常规育苗方法已满足不了大规模森林更新造林对苗木的需要,为此,我们于1988～1990年进行了大棚联作育苗试验,连续3年获得高产稳产。大棚联作育苗技术如下: (1)秋季播种,为使幼芽提早出土,延长生育期,保证第2茬苗木适期播种,于秋季土壤5cm处温度稳定在3～5℃、尚未结冰时播
Daxinganling larch conventional nursery for 2 years out of afforestation. With the development of new nursery techniques and the urgent need for nursery stock after the “May-June” extra-large forest fire in Daxing’anling, the conventional seedling-raising methods have failed to meet the needs of seedlings for large-scale forest reforestation. Therefore, we conducted the study from 1988 to 1990 Joint incubation experiment in greenhouse, high yield and stable yield for three consecutive years. Greenhouse cultivation techniques are as follows: (1) planting in autumn, in order to make the early excavated buds, extend the growth period, to ensure the second sowing seedlings planted in autumn soil 5cm at a temperature stable at 3 ~ 5 ℃, not yet frozen broadcast