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青杨又名河杨,在各山区均有分布。这种树的树干通直,侧根发达,能串根生长出幼树来,其果穗在成熟前也不易被大风吹掉,是绿化荒山荒地,保坚水土的良好树种。我们在大青山地带进行采种育苗试验,效果很好,播种后三个月的时间,苗高一般就达到12——20公分,径际0.4公分,根系发达,幼苗健壮,亩产6万多株成苗。怎样进行青杨采种
Ching Yang, also known as River Yang, are distributed in the mountainous areas. The trunk of this tree is straight and well developed with lateral roots. It grows young seedlings through string roots. Its ears are not easily blown off by strong winds until they are ripened. They are a good tree species for green barren hills and wastelands and for preserving water and soil. We are in the Daqingshan area seedling raising test, the effect is very good, three months after sowing, the seedling height is generally reached 12 - 20 cm, 0.4 cm diameter, root system, seedling robust, more than 60,000 strains per mu Into the seedlings. How to carry out Qingyang mining