基于高寒矿区颗粒有机肥和羊板粪配施的无客土重构土壤理化性质分析
作者:
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(1.青海大学农牧学院,青海 西宁 810016;2.西北农林科技大学草业与草原学院,陕西 咸阳 712100)

作者简介:

张玉芳(1998-),硕士研究生,主要从事矿区生态修复技术研究。E-mail:1249212374@qq.com。

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基金项目:中央财政林草科技推广示范项目(青[2021]TG01号);青海省财政林业改革发展资金新技术推广项目(2021001);高等学校学科创新引智计划(D18013);青海省科技创新创业团队“三江源生态演变与管理创新团队”。


Analysis of soil physicochemical properties based on combined application of granular organic fertilizer and sheep board manure in alpine mining areas
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(1.College of Agriculture and Animal Husbandry,Qinghai University,Xining Qinghai 810016;2.College of Grassland Agriculture,Northwest Agriculture and Forestry University,Xianyang Shaanxi 712100)

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    摘要:

    为解决高寒矿区恢复植被退化和土壤肥力下降等问题,选用颗粒有机肥与牧区羊圈羊板粪作为试验材料,对青海木里矿区不同坡度改良土进行双因素随机区组控制试验,以期为高寒矿区生态恢复提供理论依据。羊板粪与矿山渣土配比设置4个水平,分别为0∶10(0 m3/m2,S0)、1.5∶10(0.03 m3/m2,S1)、3∶10(0.06 m3/m2,S2)、4.5∶10(0.09 m3/m2,S3),颗粒有机肥施用量设4个水平,分别为0 kg/m2(M0)、1.2 kg/m2(M1)、2.4 kg/m2(M2)、3.6 kg/m2(M3),羊板粪与颗粒有机肥两两组合共16个处理。分析不同配施处理下试验小区土壤理化性质和土壤酶活性,研究结果表明:(1)M3S2处理下平地土壤最大持水量、毛管持水量、毛管孔隙度分别是M0S0处理(对照)的3.9、4.1和1.8倍,土壤容重相比M0S0处理降低42.8%;M3S2处理下坡地土壤最大持水量、毛管孔隙度分别比M0S0处理高70.6%和75.0%,毛管持水量是M0S0处理的2.2倍。(2)单施羊板粪及其与颗粒有机肥的配施处理,能提高平地土壤养分含量及土壤pH,M1S3处理下平地土壤全氮、全磷、有机质含量分别是M0S0处理的2.0、1.9和1.9倍,M3S2处理下铵态氮含量是M0S0处理的3.1倍。M1S2处理下坡地土壤全氮含量比M0S0处理显著提高64.3%。(3)平地与坡地土壤脲酶活性分别在M1S3、M3S3处理下显著提高。(4)土壤全氮、毛管孔隙度、铵态氮是影响土壤酶活性的驱动因子。总体来看,矿区平地无客土重构土壤以颗粒有机肥与羊板粪配施M1S3处理效果最佳,矿区坡地无客土重构土壤采用M3S2处理效果最好。

    Abstract:

    In order to solve the problems of revegetation degradation and soil fertility decline,granular organic fertilizer and sheep board manure in pastoral areas were selected as experimental materials for improving soil in Muli mining area of Qinghai,and a two-factor random block control experiment was conducted at slope and flat plots to provide theoretical basis for ecological recovery in alpine mining area. A total of sixteen treatments combined with sheep board manure and granular organic fertilizer were set up,including four levels of the ratio of sheep board manure and mine muck,which were 0∶10(0 m3/m2,S0),1.5∶10(0.03 m3/m2,S1),3∶10(0.06 m3/m2,S2),4.5∶10(0.09 m3/m2,S3),and four levels of granular organic fertilizer application,which were 0 kg/m2(M0),1.2 kg/m2(M1),2.4 kg/m2(M2),3.6 kg/m2(M3). The results showed that:(1)The maximum soil water holding capacity,capillary water holding capacity and capillary porosity of the flat plot under M3S2 treatment were 3.9,4.1 and 1.8 times higher than those under M0S0 treatment,and the soil bulk density reduced by 42.8% compared with that of M0S0 treatment. The maximum soil water holding capacity and capillary porosity of the slope plot under M3S2 were 70.6% and 75.0% higher than those of M0S0 treatment,and the capillary water holding capacity was 2.2 times higher than that of M0S0 treatment.(2)The single application of sheep board manure and its combined application with granular organic fertilizer increased the soil nutrient content and soil pH in the flat plot. The contents of total nitrogen,total phosphorus and organic matter in flat plot under M1S3 treatment were 2.0,1.9 and 1.9 times that of M0S0 treatment,respectively. The content of ammonium nitrogen under M3S2 treatment was 3.1 times that of M0S0 treatment. Soil total nitrogen in the slope plot significantly increased by 64.3% under M1S2 compared with M0S0 treatment.(3)Soil urease activity in the flat and plot land significantly increased under M1S3 and M3S3 treatments.(4)Soil total nitrogen,capillary porosity and ammonium nitrogen were the driving factors affecting soil enzyme activities. On the whole,the treatment effect of granular organic fertilizer combined with sheep board manure M1S3 is the best for the reconstructed soil without guest soil in the flat plot of mining area,and M3S2 is the best for the reconstructed soil without guest soil in the slope plot of mining area.

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张玉芳,李希来,金立群,高志香,马小雯,张钰珑,马瑞明,寇建村.基于高寒矿区颗粒有机肥和羊板粪配施的无客土重构土壤理化性质分析[J].中国土壤与肥料,2023,(7):129-137.

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  • 收稿日期:2022-05-30
  • 最后修改日期:
  • 录用日期:2022-07-31
  • 在线发布日期: 2023-10-30
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