施肥对华北落叶松幼苗生长的影响  

Effect of fertilization on the seedling growth of Larix principis-rupprechtii

作　　者：白正甲 袁启华 曹治锋 李箐 李田 BAI Zhengjia;YUAN Qihua;CAO Zhifeng;LI Qing;LI Tian(Beijing Xishan Experimental Forest Farm,Beijing 100093,China;Beijing Jingxi Forest Farm,Beijing 102300,China)

机构地区：[1]北京市西山试验林场,北京100093 [2]北京市京西林场,北京102300

出　　处：《北京农学院学报》2023年第4期93-98,共6页Journal of Beijing University of Agriculture

基　　金：北京林业大学基础科学研究合作项目“北方主要用材林树种高效培育理论与技术研究”(JD2011-08)。

摘　　要：【目的】为寻找华北落叶松苗木科学合理的施肥量。【方法】以华北落叶松容器苗为试验材料,设置3个肥力梯度,测定施肥对苗木生物量、氮、磷和钾含量的影响以及分析木质化期前后苗木养分动态变化。【结果】施肥处理显著增加苗木生物量、氮、磷和钾含量,尤其是高肥处理。在顶芽形成前和生长季末,高肥分别对叶片和根系的生物量和养分含量的提升作用最大,最高可达低肥对照组的32倍。【结论】高肥处理能够最有效地提高华北落叶松幼苗的苗木质量。[Objective]This study aimed to investigate the effect of fertilization on the performance of Larix principis-rupprechtii seedlings.[Methods]Container seedlings of L.principis-rupprechtii were selected as the experimental materials.Three distinct fertility levels were set to assess the effect on seedling biomass and the contents of nitrogen,phosphorus,and potassium,and the nutrient dynamics of seedling before and after lignification were analyzed.[Results]Fertilization significantly increased the seedling biomass and the contents of nitrogen,phosphorus,and potassium,especially after high fertility treatment.Prior to apical bud formation and at the end of the growing season,the high fertility treatment exhibited the most significant effect on enhancing biomass and nutrient contents of leaves and roots,which were up to 32 times of those after the low fertility treatment.[Conclusion]High fertility is the most effective treatment for improving the seedling quality of L.principis-rupprechtii.

关 键 词：生物量 施肥 苗木质量 养分含量 华北落叶松 

分 类 号：S791.229[农业科学—林木遗传育种]