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主成分分析在三七连作土壤质量综合评价中的应用

张子龙1**,王文全1,缪作清2,李世东2,杨建忠3   

  1. 1北京中医药大学中药学院, 北京 100102; 2中国农业科学院植物保护研究所, 北京 100081; 3云南省文山三七研究院, 云南文山 663000)
  • 出版日期:2013-06-10 发布日期:2013-06-10

Application of principal component analysis in comprehensive assessment of soil quality under Panax notoginseng continuous planting.

ZHANG Zi-long1**, WANG Wen-quan1, MIU Zuo-qing2, LI Shi-dong2, YANG Jian-zhong3   

  1. (1College of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China; 2Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China; 3Wenshan Research Institute of Sanqi, Yunnan Province, Wenshan 663000, Yunnan, China)
  • Online:2013-06-10 Published:2013-06-10

摘要:

三七(Panax notoginseng)的连作障碍效应严重,但其连作土壤质量研究尚属空白。本研究采用主成分分析结合聚类分析的方法对三七连作土壤质量进行综合评价,结果发现:微生物多样性指数、土壤真菌数量与比例及土壤P和K含量是决定土壤质量的关键因素。土壤质量综合评价指数(f值)可以较好地反映实际土壤质量,并能够在一定程度上反应三七植株的生长状况,是较为理想的土壤质量评价指标。
 

关键词: 干沉降通量, 干沉降速率, 沉降阻力, 臭氧干沉降

Abstract: Continuous planting obstacle is a serious problem in Panax notoginseng culture, but few studies have been performed to evaluate the soil quality under P. notoginseng continuous planting. In this paper, a comprehensive assessment was made on the soil quality under P. notoginseng continuous planting by using principal component analysis and cluster analysis. Our results showed that the key factors determining the soil quality were the diversity of microorganisms, abundance and relative ratio of soil fungi, and soil phosphorus and potassium contents. The comprehensive assessment index (f value) could better reflect the soil quality and the growth status of P. notoginseng plant, being an appropriate index for the assessment of soil quality under P. notoginseng continuous planting.

Key words:   , ozone deposition, ozone deposition resistance., ozone dry deposition rate, ozone dry deposition flux