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时间:2020-04-25
《四川凉攀烟区植烟土壤有效铜和有效锌空间变异特征-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、2014.06,35(3)中国烟草科学ChineseTobaccoScience四川凉攀烟区植烟土壤有效铜和有效锌空间变异特征张隆伟,伍仁军,王昌全2聿,张倩,李冰2,李启权2,卞建锋,刘扬(1.四川省烟草公司,成都610041;2.四川农业大学资源环境学院,成都611130)摘要:微量元素不仅影响烟叶生长发育及烟叶产质量,且它们之间存在相互促进或拮抗作用。为了合理施用微肥,提高烟田合理施肥管理水平,改善烟叶产质量,采用地统计和GIS技术相结合的方法,研究了凉攀烟区植烟土壤有效态Cu、Zn的空间变异
2、。结果表明,研究区植烟土壤有效态Cu含量比较丰富,有效Zn含量适中,分别为2.83、1.86mg/kg。受地形、气候环境影响,不同县域有效态Cu、zn含量差异较大。水稻土和黄壤有效Cu、Zn含量明显高于紫色土。两种微量元素与海拔呈负相关性。有效态Cu、Zn含量空间变异距离分别为50、25km,属于中等强度空间变异,受土壤类型等结构因素和施肥等随机性因素的共同影响。空间插值分析结果表明,有效态Cu、Zn含量总体上呈斑块状分布,区域差异性明显。关键词:植烟土壤;有效铜;有效锌;空间变异;地统计学中图分类
3、号:$572.06文章编号:1007.5119(2014)030001—06DOI:10.13496~.issn.i007—5119.2014.03.001SpatialVariabilityCharacteristicsofAvailableCuandZninTobaccoPlantingSoilsinLiangshanandPanzhihua,SichuanProvinceZHANGLongwei,WURenjun,WANGChangquan,ZHANGQian,LIBing。,LIQiquan
4、,BIANJianfeng,LIUYang(1.SichuanProvincialTobaccoCompany,Chengdu610041,China;2.CollegeofResourcesandEnvironment,SichuanAgriculturalUniversity,Chengdu611130,China)Abstract:Micronutrientsnotonlyinfluencetobaccogrowth.yieldandquality,andtakethepositiveoran
5、tagonisticeffectsforeachothersometimes.Inordertoapplymicronutrientsproperlyintobaccoproduction.andprovidescientificinformationforimprovingtheyieldandqualityoftobacco,geostatisticsandGISwereusedtostudythespatialvariabilitycharacteristicsofavailableCuand
6、ZnintobaccoplantingsoilsinLangshanandPanzhihua.TheresultindicatedthattheaveragecontentofavailableCuwasabundant,andtheaveragecontentofavailableZnismoderate.whichwererespectively2.83and1.86mg&g.AvailableCuandZncontentsvariedlargelyamongcountiesduetodifer
7、encesintopographyandclimate.TheavailableCuandZrtcontentswerehigherinpaddyandyellowsoilsthanthoseinpurplishsoil,andwerenegativelycorrelatedwithelevation.ThespatialvariationdistanceofavailableCuandZnwere50and25km,respectively,whichbelongedtomoderateinten
8、sityspatialvariation,whichwasinfluencedbystructuralfactorslikesoiltyoeandrandomfactorslikefertilizer.InterpolationresultsindicatedthatthecontentofavailableCuandZndistributedinpatchshapeasawhole.butdistributionsOftheirhighvalueareaandlow
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