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水杉(Metaseguoia glyptostroboides Huet Cheng)是我省关中、陕南近年来大力发展的重要用材树种,过去依赖原产地湖北省提供少量种子育苗,远不能满足生产上的需要。七十年代初期曾经大搞水杉扦插育苗,缓和了对水杉苗的需求。但众所周知,用扦插苗造林,林木易早衰枯枝,木材易心腐。因此,从长远计,水杉播种育苗仍属势在必行。1984年,汉中市苗圃从原引入20年生大树上采收种子育苗,创造了亩产苗8.3万余株的丰产纪录,他们的经验很值得借鉴。笔者最近走访了苗圃,现将他们的具体作法介绍如下。
Metaseguoia glyptostroboides (Huet Cheng) is an important timber species that has developed rapidly in recent years in Guanzhong and Southern Shaanxi provinces. In the past, Hubei Province, depending on its origin, provided a small amount of seedling nurseries, which far could not meet production needs. In the early seventies, we had a large afforestation of Metasequoia cuttings to ease the demand for metasequoia seedlings. However, as we all know, afforestation with cutting seedlings, forest easy premature decay, easy to rot wood. Therefore, in the long term, planting seedlings of Metasequoia is still imperative. In 1984, Hanzhong City Nursery introduced seedlings from seedlings of 20-year-old trees and created a record high yield of more than 83,000 mu of seedlings. Their experience is worth learning from. I recently visited the nursery, now their specific practices are as follows.