Improvement of soil adsorption performance of green space by plants

doi:10.14088/j.cnki.issn0439-8114.2022.14.015

Abstract

Abstract: In order to explore the influence of plants on the adsorption performance of green space soil pollutants, green space soil with four properties was selected. And four plants of Hemerocallis fulva L., Iris Tectorum Maxim., Hydrangea macrophylla （Thunb.） Ser., and Oxalis corniculata L. were cultivated, and the adsorption capacity of soil to N, P and COD（chemical oxygen demand） was analyzed in different green space after cultivation. The results showed that plants could significantly improve the adsorption capacity of soil to N, P and COD. The contribution rate of plants to the adsorption capacity of N, P and COD were 33.12%, 10.45% and 17.63%, respectively. There was an obvious interaction between plant and soil properties on the adsorption of pollutants. The relatively good ratio of nitrogen, phosphorus and COD adsorption capacity was soil mixed with sand and biochar （volume ratio of 4:4:2） and 1% PAM and Hemerocallis fulva, soil mixed with sand and coir （volume ratio of 4:4:2） and 1% PAM and Hydrangea macrophlla, soil mixed with sand and coir （volume ratio of 4:4:2） and 1% PAM and Oxalis corniculata L., respectively.

Key words: plant, green space soil, pollution, adsorption performance, contribution rate

CLC Number:

S156

WANG Chen-guang, WANG Xu-dong. Improvement of soil adsorption performance of green space by plants[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(14): 86-91.

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