SUN Kaining,WANG Kean,YANG Ning.Effects of Salt Isolating Methods on Spatial Distribution of Major Saline Ions and Enzyme Activities in Greenhouse Saline Soil[J].Research of Soil and Water Conservation,2018,25(03):57-61.
隔盐方式对设施盐渍化土壤主要盐离子空间分布及酶活性的影响
- Title:
- Effects of Salt Isolating Methods on Spatial Distribution of Major Saline Ions and Enzyme Activities in Greenhouse Saline Soil
- Keywords:
- greenhouse soil; salinization; salinity isolation layer; soil enzyme
- 分类号:
- S156.4
- 摘要:
- 针对设施土壤盐渍化日趋加重的现状，采用土柱模拟试验，以无隔盐层为对照，设置了3种隔盐层类型：砂砾层（T1），复合有机物料层（T2）、砂砾+复合有机物料层（T3），探索不同隔盐模式的抑盐效果。结果表明：盐离子含量随着土层深度的增加而逐渐降低；就7种主要离子（Na+，NH4+，K+，Ca2+，Cl-，NO3-，SO42-）总含量而言，T3在0-10 cm，10-20 cm和20-30 cm时分别较CK降低了13.5%，0.61%和27.0%，效果较好；T1和T2隔盐效果不明显。0-30 cm土层，T3分别增加了脲酶、蔗糖酶、磷酸酶活性达7.30%，4.70%，3.58%，降低了过氧化氢酶活性达8.53%；而T1则趋势相反。说明T3可以较好地抑制设施盐渍化土壤盐离子在耕层的聚集，同时可以提高土壤酶活性，对改善设施盐渍化土壤质量具有一定的作用。
- Abstract:
- According to the present situation of increase of soil salinization in greenhouse, we examined the effect of different saline partition mode on salinity control by using soil column simulation with no salinity as the control and 3 layer types:gravel layer (T1), compound organic material layer (T2), gravel composite organic material layer (T3). The results showed that the saline ion contents decreased gradually with the increase of soil depth; the total contents of 7 major ions (Na+, NH4+, K+, Ca2+, Cl-,NO3-, SO42-) of T3 decreased by 13.5%, 0.61% and 27.0% in 0-10 cm, 10-20 cm and 20-30 cm soil depths, respectively, while the effects of T1 and T2 were not obvious. T3 increased activities of urease, sucrase, phosphatase by 7.30%, 4.70% and 3.58%, respectively, and decreased catalase activity by 8.53% in the 0-30 cm soil layer, while T1 showed the opposite trend. It showed that T3 could better restrain the accumulation of saline ions in the topsoil and improve soil enzyme activities, which has a certain effect on improving the quality of saline soil.
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备注/Memo
收稿日期:2017-06-22;改回日期:2017-07-24。
基金项目:山东省农业科学院青年科研基金（2014QNM35）；山东省现代农业产业技术体系蔬菜创新团队项目（SDAIT-05-07）；山东省农业科学院农业科技创新工程（CXGC2016B06）；山东省农业科学院农业科技创新工程（CXGC2016A06）；山东省2015年度农业重大应用技术创新项目“盐碱地设施蔬菜高效栽培技术研究与示范”；国家大宗蔬菜产业技术体系项目CARS-23-G14
作者简介:孙凯宁(1985-),男,山东淄博人,博士,助理研究员,研究方向为植物营养,土壤改良及重金属污染。E-mail:sunkaining-123@163.com
通讯作者:王克安(1963-),男,山东桓台人,硕士,研究员,研究方向为蔬菜栽培,设施工程与环境调控技术方面的研究。E-mail:wka6302@126.com