| ASI法速测土壤指标与植物N吸收的相关性研究 |
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| 引用本文： | 赵洁,王莉,王永刚,戴继光.ASI法速测土壤指标与植物N吸收的相关性研究[J].土壤通报,2012(4):903-909. |
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| 作者姓名： | 赵洁 王莉 王永刚 戴继光 |
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| 作者单位： | 山西师范大学生命科学学院;辽宁省土壤肥料总站 |
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| 基金项目： | 国家科技支撑计划重点项目(2008BADA4B01);山西省引进优秀人才专项基金(2010);山西省留学基金(2011) |
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| 摘 要： | 本研究选用ASI法对山西褐土41个、河南潮土73个、辽宁棕壤43个、黑龙江黑土69个土样进行了土壤硝态N(ASI-NO3--N)、铵态N(ASI-NH4+-N)、碱溶有机质(ASI-OM)的测定,同时用常规方法测定了碱解N和有机质。并对测定值进行了相关性分析。同时选取土壤进行盆栽试验以验证ASI法测定值与植物吸N量的相关性。结果表明:四类土壤ASI-NO3--N与碱解N测定结果达到了极显著相关(褐土r=0.89**,潮土r=0.79**,棕壤r=0.90**,r=0.47**),四类土壤ASI-OM与常规方法有机质测定结果均达到了极显著正相关(褐土r=0.92**,潮土r=0.88**,棕壤r=0.93**,黑土r=0.96**),ASI-NH4+-N与碱解N测定结果也均达到了极显著正相关(褐土r=0.76**,潮土r=0.64**,棕壤r=0.97**,黑土r=0.61**)。褐土、棕壤土壤ASI-NO3--N含量与植物吸N量呈极显著正相关(P<0.01),潮土、黑土土壤ASI-NO3--N含量与植物吸N量呈显著正相关(P<0.05)。褐土、棕壤土壤ASI-NH4+-N含量与植物吸N量呈显著正相关(P<0.05),潮土、黑土土壤ASI-NH4+-N含量与植物吸N量相关性不显著(P>0.05)。除褐土土壤ASI-OM含量与植物吸N量呈显著正相关外(P<0.05),潮土、棕壤、黑土土壤ASI-OM含量与植物吸N量相关性不显著(P>0.05)。
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| 关 键 词： | ASI法 硝态N 铵态N 碱溶有机质 植物吸收 |
Study on Correlation between an Index of Soil N Supply Rapidly Determined by ASI Method and Plant N Uptake |
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| ZHAO Jie,WANG Li,WANG Yong-gang,DAI Ji-guang.Study on Correlation between an Index of Soil N Supply Rapidly Determined by ASI Method and Plant N Uptake[J].Chinese Journal of Soil Science,2012(4):903-909. |
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| Authors: | ZHAO Jie WANG Li WANG Yong-gang DAI Ji-guang |
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| Institution: | 1.Shanxi Normal University,College of Life Science,Shanxi,Linfen 041004,China;2.Liaoning Province Soil and Fertilizer Genernal Station,Liaoning,Shengyang 110034,China.) |
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| Abstract: | In this study,contents of nitrate,ammonium nitrogen and alkali-soluble organic matter in the cinnamon soil from Shanxi(41 samples),in the fluvo-aqnic soil from Henan(73 samples),in the brown soil from Liaoning(43 samples) and in the black soil from Heilongjiang(69 samples) were measured by the ASI method and the conventional method,and the correlation analysis was carried out on measured values.Simultaneously,this study confirmed the correlation characteristics between the measured value of nitrogen by ASI method and the amounts of nitrogen uptake by plant through pot experiment using these soils.The results showed that the contents of ASI-NO3--N and alkali-hydrolyzed nitrogen in four types of soils were extremely significantly positively correlated(the cinnamon soil,r=0.89**,the fluvo-aqnic soil r=0.79**,the brown soil r=0.90**,the black soil r=0.47**).The contents of ASI-OM method were extremely significantly positively correlated with the conventional method(the cinnamon soil r=0.92**,the fluvo-aqnic soil r=0.88**,the brown soil r=0.93**,the black soil r=0.96**),the contents of ASI-NH4+-N was positively correlated with the contents of alkali-hydrolyzed nitrogen(the cinnamon soil r=0.76**,the fluvo-aqnic soil r=0.64**,the brown soil r=0.97**,the black soil r=0.61**).In cinnamon and the brown soil,the ASI-NO3--N in soils had an extremely significantly positive correlation with N uptake by plant(P<0.01),in the fluvo-aqnic and the black soil,the ASI-NO3--N in soils had a significantly positive correlation with N uptake by plant(P<0.05).In cinnamon and the brown soil,the ASI-NH4+-N in soils had a significantly positive correlation with N uptake by plant(P<0.05),in fluvo-aqnic and the black soil the ASI-NH4+-N in soils did not have a significant correlation with N uptake by plant(P>0.05).Except cinnamon soil had significant positive correlation with N uptake by plant(P<0.05),the ASI-OM in soil and the N uptake by plant did not have a significant correlation in other three types of soil(P>0.05). |
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| Keywords: | ASI method Nitrate nitrogen Ammonium nitrogen Alkali-soluble organic matter Plant uptake |
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