论文部分内容阅读
我们在多年的杉木育苗中,深深感到用于护荫和除草的劳力太多,近五年来搞了全光育苗和使用了除草剂,使这个问题得到了较好的解决。杉木全光育苗不宜找山漕特别阴凉处。这种地方由于长期阴湿,早期立枯病比较严重,受过立枯病摧残的苗木,不耐干旱,对光照也很敏感,夏季旱情严重和光照较强时,容易引起死亡。实际上,在山漕内很难育出好杉苗。杉苗圃地周围,也不宜种高梁和包谷等作物用来遮荫。这些作物耗肥多,对苗生长影响很大,且易发生虫害。我们是选择排水良好的东南坡,先将
In many years of fir nursery, we feel that there is too much labor for shade and weeding. In the past five years, nurturing seedlings and using herbicides have led to a better solution to this problem. Cultivated seedling should not be found in all shades of Cotyledons special shade. Because of the long-term dampness, the early blight is more severe. The seedlings damaged by the blight are poorly tolerant of drought and drought. They are also sensitive to light. When the drought is severe and the light intensity is high in summer, deaths are easily caused. In fact, it is very difficult to breed fir seedlings in the mountain river. Cedar nursery around, it is not appropriate to planted sorghum and corn and other crops used to shade. These crops consume more fertilizer, a great impact on the growth of seedlings, and prone to pests. We choose to drain the southeast slope, first