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樟子松是黑龙江省主要速生用材、防护、“四旁”绿化的优良树种之一,树干通直,材质优良,用途广泛,很有发展前途.但近年来育苗生产的产量和质量达不到国家规定要求.从阿城县国营林场育苗来看,近3-4年内已闯过播种低产关,一般亩产达18万株以上,但换床差的很远,亩产始终徘徊在3-4万株上下,数量仅达技术规程的一半,质量也达不到规程标准,其主要原因是缺泛经验.樟子松换床是一项栽培新工艺(过去多为留床或截根留床),因对栽培技术没有充分掌握,仍用栽培落叶松的工艺手段对待樟子松,不妥.为此,我们提出三点技术措施.
Pinus sylvestris var.mongolica is one of the fine tree species in Heilongjiang Province, which is the main material for fast growing in the province of protection and “greening”. The tree trunk is straight and of good quality with wide range of uses and great development prospects. However, the yield and quality of seedling production in recent years have not reached the level of national Requirements from the Acre County state forest farm nursery point of view, the last 3-4 years have been through sowing low-yielding, the general average of more than 180,000 per mu, but the poor bed for a long time, mu always hovering at 3-4 Wannian up and down, the number of only half of the technical procedures, the quality does not meet the standards of procedure, the main reason is the lack of experience .Cultivating Pinus sylvestris is a cultivation of new technology ), Due to lack of adequate control of cultivation techniques, larch is still used to deal with the cultivation of Pinus sylvestris, is inappropriate.To this end, we propose three technical measures.