LIU Taikun,GAO Ban,XIE Zuoming,et al.Effects of Artificial Algal Crusts on Physicochemical Properties and Enzyme Activities of Saline-Alkali Soil in Hetao Plain[J].Research of Soil and Water Conservation,2022,29(04):133-139.
人工藻结皮对河套平原盐碱土理化性质和酶活性的影响
- Title:
- Effects of Artificial Algal Crusts on Physicochemical Properties and Enzyme Activities of Saline-Alkali Soil in Hetao Plain
- 文章编号:
- 1005-3409(2022)04-0133-07
- Keywords:
- saline-alkali land; soil algal crusts; soil improvement
- 分类号:
- S156.4; S154.3
- 文献标志码:
- A
- 摘要:
- 土壤藻结皮主要由土壤中的藻类和土壤颗粒胶结而形成,具备水土保持、土壤改良、防风固沙等优良的生态功能。为了研究土壤藻结皮对盐碱土的改良效果,在河套平原盐碱地野外试验区分别接种了C. miniata HJ-01,C. miniata HJ-01和S. javanicum,C. miniata HJ-01和土著丝状混合藻,培植人工土壤藻结皮。结果表明:人工藻结皮发育45 d后,0—10 cm深度土壤中水分损失减弱,土壤pH值轻微下降,电导率降低57%(p<0.05),有效氮和有效磷增加(p<0.05); 0—5 cm深度土壤中脲酶、蔗糖酶、过氧化氢酶和碱性磷酸酶活性分别增加52.1%,20.7%,16.7%,41.7%(p<0.05)。因此,人工土壤藻结皮能有效改良盐碱地。
- Abstract:
- Soil algal crusts are mainly formed by the cementation of soil algae and soil particles, and have excellent ecological functions such as soil and water conservation, soil improvement, windbreak and sand fixation. In order to study the improvement effect of soil algal crusts on saline-alkali soil, the experiment was carried out in the saline-alkali land of Hetao Plain. We inoculated C. miniata HJ-01, C. miniata HJ-01 and S. javanicum, C. miniata HJ-01 and indigenous filamentous mixed algae in the field experimental area, and the soil algal crusts were artificially cultured. The results showed that after 45 days of artificial algal crusts development, within the depth of 0—10 cm, the water loss decreased slightly, soil pH value decreased slightly, soil electrical conductivity decreased 57%(p<0.05), and available N and available P increased(p<0.05); the activities of urease, sucrase, catalase and alkaline phosphatase in 0—5 cm soil layer increased by 52.1%, 20.7%, 16.7% and 41.7%, respectively(p<0.05). Therefore, the artificial soil algal crusts could improve the saline-alkali soil effectively.
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备注/Memo
收稿日期:2021-06-16 修回日期:2021-06-29
资助项目:内蒙古地质调查院科技项目“内蒙古自治区河套灌区盐碱地生物修复与综合开发研究”(2019046338)
第一作者:刘太坤(1997—),男,山东临沂人,硕士在读,研究方向为环境生物学。E-mail:liutaikunn@163.com
高班(1995—),男,湖北汉川人,硕士,研究方向为环境生物学。E-mail:bangao@cug.edu.cn
通信作者:谢作明(1973—),男,湖北监利人,教授,主要从事环境生物地球化学研究。E-mail:zuoming.xie@cug.edu.cn