几种典型酸性旱地土壤磷吸附的关键影响因素
|
摘要
以几种典型的酸性旱地土壤为研究对象,测定了土壤磷的等温吸附曲线,描述土壤磷的吸附特征,分析土壤最大吸磷量与土壤理化性质之间的关系,通过通径分析等方法明确了影响磷吸附的关键土壤因素。结果表明:土壤粘粒、游离态氧化铝(Al_d)、非晶质氧化铝(Al_o)及有机络合态铝(Al_p)的含量均与最大吸磷量(X_m)呈极显著正相关(P<0.01),土壤pH值与X_m呈极显著负相关(P<0.01);非晶质铁铝氧化物含量(Feo+Al_o)与X_m有显著的正相关关系(r=0.62,P=0.01);而土壤有机质、游离态氧化铁(Fe_d)、非晶质氧化铁(Fe_o)及有机络合态铁(Fe_p)的含量对X_m均无显著影响(P>0.05)。即在本研究区域内,pH值越低,粘粒含量越高的土壤,其铝氧化物、非晶质铁铝氧化物(Fe_o+Al_o)含量越高,土壤的固磷能力越强。粘粒含量可能是影响土壤吸磷能力的一个最关键因素,其次为游离态氧化铝Al_d、非晶质氧化铝Al_o、有机络合态铝Al_p及土壤pH值等,其中各形态氧化铝对X_m的影响效应主要是通过与粘粒的间接作用来实现。
Phosphorus(P)sorption characteristics were investigated for fifteen representative samples of acid upland soils using P sorption isotherm experiment.The correlation between Langmuir P sorption maximum(Xm)and basic soil properties and the key soil factors affecting P sorption were also studied by path analysis.The content of soil clay,all kinds of forms of Al oxides(Al_d,Al_o,Al_p)were significantly positively correlated with X_m(P<0.01),and soil pH was significantly negatively correlated with X_m(P<0.01).The content of amorphous Fe and Al oxides(Fe_o+Al_o)was positively correlated with X_m(r=0.62,P=0.01).However,the content of soil organic matter(OM)and all kinds of Fe oxides had insignificant influence on X_m(P>0.05).In other words,the soil with lower pH and higher clay content would had higher contents of Al oxides and amorphous Fe and Al oxides(Fe_o+Al_o),thus having stronger ability on P fixation or retention.Path analysis showed that the content of soil clay was the most important soil property associated with Xm in the acid upland soils of southern China,followed by dithionite-citrate-bicarbonate solution(DCB) extractable Al,oxalate extractable Al,sodium pyrophosphate extractable Al and soil pH,and the soil clay content could also exert influence on Xm via its indirect effect through all kinds of Al oxides.
Phosphorus(P)sorption characteristics were investigated for fifteen representative samples of acid upland soils using P sorption isotherm experiment.The correlation between Langmuir P sorption maximum(Xm)and basic soil properties and the key soil factors affecting P sorption were also studied by path analysis.The content of soil clay,all kinds of forms of Al oxides(Al_d,Al_o,Al_p)were significantly positively correlated with X_m(P<0.01),and soil pH was significantly negatively correlated with X_m(P<0.01).The content of amorphous Fe and Al oxides(Fe_o+Al_o)was positively correlated with X_m(r=0.62,P=0.01).However,the content of soil organic matter(OM)and all kinds of Fe oxides had insignificant influence on X_m(P>0.05).In other words,the soil with lower pH and higher clay content would had higher contents of Al oxides and amorphous Fe and Al oxides(Fe_o+Al_o),thus having stronger ability on P fixation or retention.Path analysis showed that the content of soil clay was the most important soil property associated with Xm in the acid upland soils of southern China,followed by dithionite-citrate-bicarbonate solution(DCB) extractable Al,oxalate extractable Al,sodium pyrophosphate extractable Al and soil pH,and the soil clay content could also exert influence on Xm via its indirect effect through all kinds of Al oxides.
引文
[1]鲁如坤,时正元,施建平.我国南方6省农田养分平衡现状评价和动态变化研究[J].中国农业科学,2000,33(2):63-67.
[2]王永壮,陈欣,史奕,等.低分子量有机酸对土壤磷活化及其机制研究进展[J].生态学杂志,2018,37(7):2189-2198.
[3]熊德中,刘淑欣.福建铁铝土磷素吸附与磷肥有效性的探讨[J].福建农学院学报,1990,(2):196-201.
[4]刘淑欣,熊德中.福建省红壤性水稻土磷素吸附特性与磷肥效应的研究[J].土壤学报,1991,28(2):223-227.
[5]何振立,朱祖祥,袁可能,等.土壤对磷的吸持特性及其与土壤供磷指标之间的关系[J].土壤学报,1988,25(4):397-404.
[6]王彦,张进忠,王振华,等.四川盆地丘陵区农田土壤对磷的吸附与解吸特征[J].农业环境科学学报,2011,30(10):2068-2074.
[7]吕珊兰,杨熙仁,康新茸.土壤对磷的吸附与解吸及需磷量探讨[J].植物营养与肥料学报,1995,1(3-4):29-35.
[8]何帅,尹飞虎,谢海霞.新疆地带性土壤磷吸附特性影响因素研究[J].新疆农业科学,2017,54(8):1513-1522.
[9]Kang J,Hesterberg D,Osmond D L.Soil organic matter effects on phosphorus sorption:a path analysis[J].Soil Science Society of America Journal,2009,73:360-366.
[10]Wisawapipat W,Kheoruenromne I,Suddhiprakarn A,et al.Phosphate sorption and desorption by Thai upland soils[J].Geoderma,2009,153:408-415.
[11]朱荫湄,Pardini G,Sequi P.土壤磷酸盐吸持作用的研究[J].土壤学报,1985,22(2):127-135.
[12]杨芳,何园球,李成亮,等.不同施肥条件下旱地红壤磷素固定及影响因素的研究[J].土壤学报,2006,43(2):267-272.
[13]赵庆雷,王凯荣,谢小立.长期有机物循环对红壤稻田土壤磷吸附和解吸特性的影响[J].中国农业科学,2009,42(1):355-362.
[14]Yan X,Wang D J,Zhang H L,et al.Organic amendments affect phosphorus sorption characteristics in a paddy soil[J].Agriculture Ecosystems&Environment,2013,175:47-53.
[15]张鑫,谷会岩,陈祥伟.择伐干扰对小兴安岭阔叶红松林土壤磷吸附解吸的影响[J].应用生态学报,2018,29(1):11-17.
[16]徐敏,宋春,毛璐,等.不同土地利用方式下紫色土磷吸附-解吸动力学特征[J].水土保持通报,2015,35(5):39-44.
[17]Yang W J,Cheng H G,Hao F H,et al.The influence of landuse change on the forms of phosphorus in soil profiles from the Sanjiang Plain of China[J].Geoderma,2012,189-190:207-214.
[18]江西省土地利用管理局.江西土壤[M].北京:中国农业科技出版社,1991.
[19]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,2000.
[20]Graetz D A,Nair V D.Phosphorus sorption isotherm determination.//Pierzynski G M.Methods of phosphorus analysis for soils,sediments,residuals,and waters[M].Raleigh:Southern Coop.Ser.Bull.369.North Carolina State Univ.,2000.35-38.
[21]马毅杰,陈家坊.我国红壤中氧化铁形态及其特性和功能[J].土壤,1998,30(1):1-6.
[22]章明奎.土壤氧化铁的形态在浙江红壤和黄壤分类中的意义[J].浙江大学学报(农业与生命科学版),1990,16(1):42-50.
[23]李熙波,雷寿平.武夷山脉主峰黄岗山两种山地草甸土的研究[J].亚热带资源与环境学报,2005,20(3):11-13.
[24]Kuo S.Application of a modified Langmuir isotherm to phosphate sorption by some acid soils[J].Soil Science Society of America Journal,1988,52:97-102.
[25]Singh B,Gilkes R J.Phosphorus sorption in relation to soil properties for the major soil types of South-Western Australia[J].Australian Journal of Soil Research,1991,29:603-618.
[26]宋春丽.旱作条件下不同母质红壤磷吸附作用及其影响因素研究[J].中国农学通报,2016,32(2):129-134.
[27]邱亚群.湖南典型土壤磷的吸附解吸机制及磷流失控制研究[D].长沙:中南林业科技大学,2012.
[28]肖懿,唐家良,朱波,等.丘陵区紫色土不同土地利用方式下磷的吸附解吸特性[J].西南师范大学学报(自然科学版),2015,40(1):58-64.
[29]黄昌勇.土壤学[M].北京:中国农业出版社,2000.
[30]鲁如坤,时正元,钱承梁.磷在土壤中有效性的衰减[J].土壤学报,2000,37(3):323-329.
[31]Havlin J L,Beaton J D,Tisdale S L,et al.Soil fertility and fertilizers:an introduction to nutrient management[M].New Jersey:Prentic Hall,2004.
[32]邵兴华,章永松,林咸永,等.三种铁氧化物的磷吸附解吸特性以及与磷吸附饱和度的关系[J].植物营养与肥料学报,2006,12(2):208-212.
[2]王永壮,陈欣,史奕,等.低分子量有机酸对土壤磷活化及其机制研究进展[J].生态学杂志,2018,37(7):2189-2198.
[3]熊德中,刘淑欣.福建铁铝土磷素吸附与磷肥有效性的探讨[J].福建农学院学报,1990,(2):196-201.
[4]刘淑欣,熊德中.福建省红壤性水稻土磷素吸附特性与磷肥效应的研究[J].土壤学报,1991,28(2):223-227.
[5]何振立,朱祖祥,袁可能,等.土壤对磷的吸持特性及其与土壤供磷指标之间的关系[J].土壤学报,1988,25(4):397-404.
[6]王彦,张进忠,王振华,等.四川盆地丘陵区农田土壤对磷的吸附与解吸特征[J].农业环境科学学报,2011,30(10):2068-2074.
[7]吕珊兰,杨熙仁,康新茸.土壤对磷的吸附与解吸及需磷量探讨[J].植物营养与肥料学报,1995,1(3-4):29-35.
[8]何帅,尹飞虎,谢海霞.新疆地带性土壤磷吸附特性影响因素研究[J].新疆农业科学,2017,54(8):1513-1522.
[9]Kang J,Hesterberg D,Osmond D L.Soil organic matter effects on phosphorus sorption:a path analysis[J].Soil Science Society of America Journal,2009,73:360-366.
[10]Wisawapipat W,Kheoruenromne I,Suddhiprakarn A,et al.Phosphate sorption and desorption by Thai upland soils[J].Geoderma,2009,153:408-415.
[11]朱荫湄,Pardini G,Sequi P.土壤磷酸盐吸持作用的研究[J].土壤学报,1985,22(2):127-135.
[12]杨芳,何园球,李成亮,等.不同施肥条件下旱地红壤磷素固定及影响因素的研究[J].土壤学报,2006,43(2):267-272.
[13]赵庆雷,王凯荣,谢小立.长期有机物循环对红壤稻田土壤磷吸附和解吸特性的影响[J].中国农业科学,2009,42(1):355-362.
[14]Yan X,Wang D J,Zhang H L,et al.Organic amendments affect phosphorus sorption characteristics in a paddy soil[J].Agriculture Ecosystems&Environment,2013,175:47-53.
[15]张鑫,谷会岩,陈祥伟.择伐干扰对小兴安岭阔叶红松林土壤磷吸附解吸的影响[J].应用生态学报,2018,29(1):11-17.
[16]徐敏,宋春,毛璐,等.不同土地利用方式下紫色土磷吸附-解吸动力学特征[J].水土保持通报,2015,35(5):39-44.
[17]Yang W J,Cheng H G,Hao F H,et al.The influence of landuse change on the forms of phosphorus in soil profiles from the Sanjiang Plain of China[J].Geoderma,2012,189-190:207-214.
[18]江西省土地利用管理局.江西土壤[M].北京:中国农业科技出版社,1991.
[19]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,2000.
[20]Graetz D A,Nair V D.Phosphorus sorption isotherm determination.//Pierzynski G M.Methods of phosphorus analysis for soils,sediments,residuals,and waters[M].Raleigh:Southern Coop.Ser.Bull.369.North Carolina State Univ.,2000.35-38.
[21]马毅杰,陈家坊.我国红壤中氧化铁形态及其特性和功能[J].土壤,1998,30(1):1-6.
[22]章明奎.土壤氧化铁的形态在浙江红壤和黄壤分类中的意义[J].浙江大学学报(农业与生命科学版),1990,16(1):42-50.
[23]李熙波,雷寿平.武夷山脉主峰黄岗山两种山地草甸土的研究[J].亚热带资源与环境学报,2005,20(3):11-13.
[24]Kuo S.Application of a modified Langmuir isotherm to phosphate sorption by some acid soils[J].Soil Science Society of America Journal,1988,52:97-102.
[25]Singh B,Gilkes R J.Phosphorus sorption in relation to soil properties for the major soil types of South-Western Australia[J].Australian Journal of Soil Research,1991,29:603-618.
[26]宋春丽.旱作条件下不同母质红壤磷吸附作用及其影响因素研究[J].中国农学通报,2016,32(2):129-134.
[27]邱亚群.湖南典型土壤磷的吸附解吸机制及磷流失控制研究[D].长沙:中南林业科技大学,2012.
[28]肖懿,唐家良,朱波,等.丘陵区紫色土不同土地利用方式下磷的吸附解吸特性[J].西南师范大学学报(自然科学版),2015,40(1):58-64.
[29]黄昌勇.土壤学[M].北京:中国农业出版社,2000.
[30]鲁如坤,时正元,钱承梁.磷在土壤中有效性的衰减[J].土壤学报,2000,37(3):323-329.
[31]Havlin J L,Beaton J D,Tisdale S L,et al.Soil fertility and fertilizers:an introduction to nutrient management[M].New Jersey:Prentic Hall,2004.
[32]邵兴华,章永松,林咸永,等.三种铁氧化物的磷吸附解吸特性以及与磷吸附饱和度的关系[J].植物营养与肥料学报,2006,12(2):208-212.