花生施钙对红壤旱土酸度及有害金属含量的影响  

Effects of calcium fertilizer application on acidity and content of toxic metal elements in upland red soil planted with peanut

作　　者：吴美庆 曾宁波[1,2,3] 王静 唐康 刘登望 李林[1,2,3] WU Mei-qing;ZENG Ning-bo;WANG Jing;TANG Kang;LIU Deng-wang;LI Lin(College of Agronomy,Hunan Agricultural University,Changsha 410128,China;Hunan Peanut Engineering Technology Research Center,Changsha 410128,China;Changsha Branch of National Peanut Engineering Technology Research Center,Changsha 410128,China;Liuyang Environmental Protection Bureau,Liuyang 410000,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]湖南省花生工程技术研究中心,湖南长沙410128 [3]国家花生工程技术研究中心长沙分中心,湖南长沙410128 [4]浏阳市环境保护局,湖南浏阳410000

出　　处：《中国油料作物学报》2022年第2期392-398,共7页Chinese Journal of Oil Crop Sciences

基　　金：国家自然科学基金项目(31671634)。

摘　　要：为探明花生施用钙肥对土壤酸度及有害金属元素铝、锰、镉、铅含量的影响,本研究选取大粒品种湘花2008、中粒品种湘花55、小粒品种蓝山小籽,以典型缺钙瘠薄酸性红壤旱土土柱试验,设置施钙与不施钙两个处理,测定根际土、0~20cm耕层土的pH值和有害金属元素含量。结果表明:各指标整体平均值受钙肥的影响,pH值增高4.93%,铝、镉、锰含量分别降低3.85%、2.13%、1.59%,铅含量升高0.66%。其中根际土,pH增幅远大于耕层土,湘花55>湘花2008>蓝山小籽;土壤铝含量降幅为根际土>耕层土,湘花2008>湘花55>蓝山小籽;土壤锰含量降幅在耕层土湘花55>湘花2008>蓝山小籽,根际土大、中籽升高,小籽降低;土壤镉含量在耕层土、根际土降幅均以蓝山小籽最大,湘花2008小幅升高,湘花55有降有升;土壤铅含量大、中籽品种在根际土升幅大于耕层土,而蓝山小籽降低。In order to explore the effects of calcium fertilizer application on soil acidity and harmful metal elements Al,Mn,Cd and Pb contents in peanut planting soil,this study selected three typical seed type peanut varieties in Hunan:Xianghua2008(large seed size),Xianghua55(medium seed size),Lanshan Xiaozi(small seed size)to carry out soil column test in typical calcium deficient barren acid red soil,and set up two treatments of calcium(hydrated lime)and no calcium application,rhizosphere soil and 0-20 cm topsoil were measured.The results showed that the overall average value of each index was affected by lime calcium as the pH increased by 4.93%,the content of Al,Cd,and Mn decreased by 3.85%,2.13%,1.59%respectively,and the Pb content increased by 0.66%.The increase of pH of calcium application was obviously greater in rhizosphere soil than in topsoil,midium seed>large seed>small seed.The decreasing amplitude of soil Al content by calcium application was rhizosphere soil>topsoil,large seed>medium seed>small seed.The Mn content decreased in the order of medium seed>large seed>small seed in the topsoil;large,medium seed increased,and small seed decreased in the rhizosphere soil.The Cdcontent in the topsoil and rhizosphere soil decreased the most in small seeds,large seeds increased slightly,and medium seeds decreased or increased.The soil Pb content in the rhizosphere soil of the large and medium seed varieties increased more than that in the topsoil,while the small seeds decreased.There was a stable positive correlation between pH and Mn content.The correlation between pH and Al,Cd,Pb contents was significantly affected by Ca application and soil position.

关 键 词：花生 施钙 石灰 红壤 有毒金属元素 

分 类 号：S565.2[农业科学—作物学]