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苗木通过移植,能增加营养面积,改善苗木的通风和光照条件,促进根系生长,是提高苗木质量的技术措施.一、换床育苗的时间春季樟子松二年生以上苗木生长的特点是萌动早.四月中、下旬,当月平均气温达6-8℃时,芽开始萌动.旺盛生长开始早,但高生长时间短,一般只有30-36天.高生长旺期在5月上旬-6月中旬,其中又以5月下旬生长最快,生长量常占年总生长量的60%以
Seedlings through transplantation, can increase the nutritional area, improve the ventilation and lighting conditions of seedlings and promote root growth, is to improve the quality of seedlings technical measures.First, bed change nursery seedlings in spring two years of Pinus sylvestris above the growth characteristics of early germination. April and late April, when the average temperature of the month reached 6-8 ℃, buds began to sprout. Strong growth began early, but the high growth time is short, usually only 30-36 days. High growing season in early May - mid-June , Of which the fastest growth in late May, growth often accounts for 60% of the total annual growth