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落叶松材质优良、干形通直美观、耐寒力强、生长非常迅速,是华北北部中、高山地区最有发展前途的造林树种之一。现根据我场近年来的生产实践,提出有关落叶松育苗的一些技术,供华北地区落叶松育苗人员参考。落叶松幼苗,特别是出土初期,生长缓慢,根嫩弱,极易受日灼和病害,因此要求土壤通气性良好,肥力较高、湿度适中;7月份生长最快,要求适时追肥。落叶松育苗主要应抓住以下几个环节。一、苗圃地的选择苗圃地应选择排水良好、PⅡ为6—7.5、具有灌溉条件的肥沃沙质壤土和轻壤土,低洼地、盐碱地、
Larch excellent quality, dry-through straight beautiful, hardy, rapid growth, is the northern part of North China, one of the most promising afforestation species. Now based on my field of production practice in recent years, put forward some techniques of larch seedling for larch nursery staff in North China reference. Larix seedlings, especially the early unearthed, slow growth, weak root and tender, extremely susceptible to sunburn and disease, thus requiring good soil aeration, high fertility, moderate humidity; the fastest growing in July, requiring timely top dressing. Larix seedlings should seize the following links. First, the choice of nursery nursery should choose a good drainage, P Ⅱ 6-7.5, with irrigated sandy loam and light soil conditions, low-lying land, saline land,