›› 2016, Vol. 28 ›› Issue (12): 2076-2081.DOI: 10.3969/j.issn.1004-1524.2016.12.17

• Environmental Science • Previous Articles     Next Articles

Analysis on salinity composition of northern meadow soil in greenhouse

DONG Huan, LOU Chun-rong*, YUAN Xing-fu, CHEN Xiao-yun, HE Zhi-gang   

  1. Institute of Plant Nutrition and Environmental Resources, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
  • Received:2016-05-13 Online:2016-12-15 Published:2017-01-05

Abstract: Grey correlative degree analysis and the principal component analysis were applied to study soil salinity indexes of 32 greenhouse soil samples in Haicheng City. It was shown that the sorting of grey correlative degree analysis between soil total salinity and other soil salinity indexes was as chloridion>sulfate>potassium>nitrate>1/pH>sodion>bicarbonate>calcium>magnesium. The results of principal component analysis showed that total salinity, chloridion, nitrate, potassium, 1/pH and sulfate were the main positive factors of the first principal component. The cluster analysis showed that except Dongsi Town, which varied obviously, the soil salinity within a certain area were close. But, the variation of salinity existed among different regions.

Key words: greenhouse soil, soil salinity, grey correlative degree analysis, principal component analysis

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