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《有机肥、硫磺和木质素铁对碱性土壤上桑树生长和铁素营养的影响.pdf》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、南方农业学报2011。42(5):515—517Journalof$outhemAgriculture·515·有机肥、硫磺和木质素铁对碱性土壤上桑树生长和铁素营养的影响王腾飞4,张超兰6,龙光霞4,黎晓峰矿(广西大学a农学院;bg*t学g:南宁530005)摘要:【目的】为解决碱性土壤上桑树缺铁黄化问题提供理论依据。【方法】以桑树品种特优2号为试验材料,通过盆栽试验研究施用鸡粪有机肥、硫磺、木质素铁肥对碱性土壤pH值、铁活性及桑树生长、铁索营养的影响。【结果】施用0.6709mg硫磺后能明显降低土壤pH值,比对照降低
2、约2个单位。单施硫磺(s2)和硫磺与有机肥混施(s+0F)对桑树生长有明显的促进作用,叶片和茎总重分别比对照增加28.7%和35.9%。施用硫磺(s2)、硫磺与有机肥混施(S+OF)及铁肥与有机肥混施(Fe+0F)均能提高桑树叶片中的活性铁含量。【结论】在碱性土壤中施用硫磺和有机肥能降低土壤pH值,提高土壤中活性铁的含量,促进桑树植株生长,可以作为改善和防治广西地区桑树缺铁黄化的一种较为可行的措施。关键词:有机肥;硫磺;木质素铁;桑树;活性铁中图分类号:$888.5文献标识码:A文章编号:2095—1191(2011)
3、05--0515--03Effectoforganicfertilizer,sulfurandferrouslignosulfonateonFenutritionandgrowthofmulberryinalkalinesoilWANGTeng-fei4,ZHANGChao-lan6,LONGGuang-xia‘,LIXiao-fen98‘(4AgriculturalCollege;6EnvironmentalCollege,GuangxiUniversity,Nanning530005,China)Abstract:
4、【Objective]Thestudieswereconductedtoobservetheamelioratingeffectsoforganicfertilizers,sulfurandferrouslignosulfatecompoundsonalkalinesoilsinordertoalleviateyeUowingofmulberrycausedbyiron-deficiency.【Method]Potexperimentswel'econductedtodeterminetheeffectsofchick
5、enmanure,sulfurandferrouslignosulfonateonsoilpH,activeFe(Fe舢)content,seedlingsgrowthandFenutritionofmulberryinalkalinesoils.【Result]SoilpHreducedsignificantlyby2unitscomparedtOCK.aftertreatmentwitIl0.670∥kgsulfur.Theapplicationofsulfurandsulfur+organicfertilizer
6、showedpositiveeffectonthegrowthofmulberryseedlings,andthetotalweightofleavesandshootincreasedby28.7and35.9%,respectively,afterthetreatments.Theapplicationofsulfurwithhishdosage(0.670g/I【g),sulfur+organicfertilizerandferrouslignosulfonate+organicfertilizerresulte
7、dinanincreaseofactiveFe(Fe“)contentinmulberryleaves.【Conclusion]Altogether,applyingsulfurandorganicfertilizerreducedthepHvaluesignificantly,andimprovedthegrowthofmulberryseedlingsandactiveFecontentofthesoil.Therefore,itsapplicationmayberecommendedformulberrypro-
8、ductioninarea8sufferingfromsoilalkalinityinducedFedeficiencyinGuangxi.Keywords:organicfertilizer;sulfur;ferrouslignosulfonate;mulberry;activeFe0引言【研究意义】桑树是广西重要的经济作物之一
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