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华北落叶松耐寒、生长快、材质好、造林成活率高,在平山县西部深山区是很有发展前途的树种。但华北落叶松育苗技术比较复杂,老式育苗方法需要上方遮阳,人工喷水降温、防日灼等,费工费力。为解决华北落叶松育苗难问题,作者根据在前大地林场几年的育苗试验,总结出了华北落叶松大田高床育苗技术,不仅减轻了育苗劳动强度,而且苗全、苗壮,经济效益明显。现将主要技术要点总结如下:
North American larch cold hardiness, fast growth, good material, afforestation survival rate is high, in the western mountainous area of Pingshan County is a very promising species. However, Larix principis-rupprechtii nursery technology is more complex, old-fashioned breeding methods need shade above, artificial water cooling, anti-sunburn, etc., laborious laborious. In order to solve the difficult problem of Larix principis-rupprechtii nursery, the author summed up the seedling nursery technique of Larix principis-rupprechtii in field according to several years of nursery experiment in the former Dailian Forest Farm, which not only reduced the labor intensity of seedling nursery, but also had obvious seedling and strong seedling. The main technical points are summarized as follows: