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时间:2019-05-31
《撒施复合肥柑橘园土层剖面中氮磷钾分布特征》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、果树学报2013,30(3):416~420JournalofFruitScience撒施复合肥柑橘园土层剖面中氮磷钾分布特征1,21,2*1,2111,2淳长品,彭良志,凌丽俐,江才伦,曹立,雷霆(1西南大学柑桔研究所/中国农业科学院柑桔研究所,重庆400712;2国家柑桔工程技术研究中心,重庆400712)摘要:【目的】为了探明柑橘园连续多年撒施复合肥后土层中氮、磷、钾的分布特征,【方法】2009年对重庆忠县30个紫色土柑橘园和江西省赣南地区3个县(市)24个红壤柑橘园不同土层的碱解氮、有效磷和有效钾含量进行了分析。【结果】柑橘园连续多
2、年撒施复合肥后,不同土壤剖面中碱解氮、有效磷和有效钾含量从上往下逐渐降低。在紫色土柑橘园,碱解氮主要累积在5~25cm土层,占累积总量的55.76%;有效磷主要累积在0~15cm土层,占累积总量的79.41%;有效钾主要累积在5~25cm土层,占累积总量的54.18%。在红壤柑橘园,碱解氮主要累积在10~30cm土层,占累积总量的46.12%;有效磷主要累积在0~10cm土层内,占累积总量的76.78%;有效钾主要累积在3~20cm土层,占累积总量的50.56%。【结论】氮肥撒施后在土壤中移动能力较强,而磷肥在土壤中难于移动,钾肥介于氮肥和
3、磷肥之间。关键词:柑橘园;撒施肥料;碱解氮;有效磷;有效钾;含量;分布中图分类号:S666文献标志码:A文章编号:1009-9980(2013)03-0416-05Distributionofnitrogen,phosphorusandpotassiumincitrusorchardsoilprofileafterlong-termapplicationofcompoundfertilizer1,21,2*1,2111,2CHUNChang-pin,PENGLiang-zhi,LINGLi-li,JIANGCai-lun,CAOli,LEI
4、Ting(1CitrusResearchInstituteofSouthwestUniversity/CitrusResearchInstituteofChineseAcademyofAgriculturalScience,Chongqing2NationalCitrusEngineeringResearchCenter400712China;,Chongqing400712China)Abstract:【Objective】Thestudywascarriedouttoinvestigatethedistributionofnitroge
5、n(N),phosphorus(P)andpotassium(K)incitrusorchardsoilafterlong-termbroadcastingapplicationofcompoundfertiliz-er.【Method】Thecontentsofalkalihydrolyzable-N,availablePandavailableKwereanalyzedinthesamplescollectedfromdifferentprofilesofsoilinmanycitrusorchardsincludingthirtypu
6、rplishsoilor-chardsinZhongxiancountyofChongqingandtwentyfourredsoilorchardsinsouthernJiangxiprovincein2009.【Result】Theresultsshowedthatthecontentsofthealkalihydrolyzable-N,availablePandavail-ableKgraduallydeclinefromsurfacelayerofsoiltodeeplayer.The55.76%and46.12%ofalkalih
7、ydro-lazable-Ndistributedin5to25cmdepthofpurplishand10to30cmofredsoil,respectively.79.41%ofavailablePwasobservedin0to15cmdepthofpurplishsoiland76.78%in0to10cmdepthofredsoil;54.18%and50.56%ofavailableKwasaccumulatedin5to25cmdepthofpurplishsoiland3to20cmdepthofredsoil,respec
8、tively.【Conclusion】Theresultsindicatedthatbybroadcastingapplicationofcompoundfertilizer,t
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