大兴安岭地区立地条件对笃斯越橘生长的影响

摘要

In order to provide a reference for developing, utilization, cultivating and domestication of Vaccinium uliginosum in Greater Khingan Range areas, in view of four typical site types, including the meadow bog without soil layer type, the meadow bog with soil layer type, the meadow bog in cleugh type, and the mountain land type, the effects of organic matter content and nitrogen content in soils on some growth indexes in V. uliginosum were researched under different site conditions in Greater Khingan Range areas, such as plant height, ground diameter, fruit size, single fruit mass, and so on, and relationship between the indexes were analyzed. The results showed that organic matter content and nitrogen content had significant differences among different site types, organic matter content and nitrogen content had significant positive correlation, and the correlation coefficient was 0.818. Nitrogen content, plant height, ground diameter, fruit diameter and single fruit mass in V. uliginosum had significant differences among different site types. Among them, nitrogen content in leaf was positively related to nitrogen contents in stem and root, and the correlation coefficient were 0.906 and 0.854 respectively. The organic matter and nitrogen contents in soil under the site types could meet the demands of V. uliginosum normal growth.%为给笃斯越橘资源的开发利用和栽培驯化提供参考依据，针对大兴安岭笃斯越橘的4种典型立地类型：水湿地无土壤层类型、水湿地有土壤层类型、水湿地沟谷草甸类型和山地类型，研究大兴安岭地区不同立地条件下着生基质的有机质含量、氮含量对笃斯越桔的株高、地径、果实大小、单果质量等指标的影响，以及各指标间的相互关系。结果表明：4种立地类型中，不同立地类型间的有机质含量和氮含量差异显著，并且呈显著正相关，相关系数r=0.818；不同立地类型间笃斯越橘的氮含量、株高、地径、果实横纵径和单果质量差异显著，其中笃斯越橘叶片氮含量与茎段氮含量、根段氮含量呈极显著的正相关，相关系数分别为r=0.906、r=0.854；4种立地类型的土壤有机质和土壤氮含量均能满足笃斯越橘正常生长的需要。