不同施氮方式对甘蔗生理生化性状的影响.pdf

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1、南方农业学报201l，42(1)：26-29JournalofSouthernAgriculture不同施氮方式对甘蔗生理生化性状的影响蓝立斌，陈超君，米超，罗艺，梁和’，王爱华，韦玉奇(广西大学农学院．南宁530005)摘要：【目的】探讨不同氮肥施用方式对甘蔗若干生理生化性状的影响。【方法】以新台糖22号(ROC22)为试验材料，设(T1)不施氮肥，(他)氮肥作基肥一次性施用，(，13)氮肥分摹肥和分蘖肥施用，(T4)氮肥分基肥、分蘖肥和攻茎肥施用，比较不同施氮方式对甘蔗叶片若干生理生化性状的

2、影响。【结果】氮肥仅作基肥一次性施用的甘蔗叶片叶绿素含量、可溶性蛋白质含量、硝酸还原酶活性及根系活力在甘蔗苗期均较高，但到了生长中后期均较低；而氮肥按基肥、分蘖肥、攻茎hE3次施用时，在甘蔗生长中期及后期的上述各项生理生化指标均较高。【结论】甘蔗氮肥施用按基肥、分蘖肥、攻茎肥分3次施用对甘蔗生理生化性状有积极的影响，能持久保持较强的生理优势。关键词：甘蔗；施氮方式；生理生化性状中图分类号：S566．101文献标识码：A文章编号：2095一1191(2011)01-0026—04Effectofd

3、ifferentapplicationmethodsofnitrogenfertilizeronl●_●l-_‘■S0mephysio-biochemicalparametersInsuRarcaneLANLi—bin，CHENChao-jun，MIChao，LUOYi，LIANGHe‘，WANGAi—hua，WEIYu-qi(AgriculturalCollege，GuangxiUniversity，Nanning530005，China)Abstract：【ObjectiveJTheobje

4、ctiveofthepresentstudyWaStoinvestigatetheeffectofdifferentapplicationmethodsofnitrogen(岱N)fertilizeronsomephysiologicalandbiochemicalparametersinsugarcane．【Method】Theplantsofsugar-canevarietyROC22wereculturedinsoil-potculture．Thetotalamountofnitrogen

5、fertilizer(5g／pot)w踮keptasbasicfer-tilizertreatmentexcepttheT1，wherenofertilizerhasbeengiventotheplants．Theotherthreetreatmentswere：5g／potatstage(T2)，2．5g／potbasicfertilizer+2．5g／pottiUeringfertilizer(T3)，1．5g／potbaslefertilizer+1．5g／pottilleringfert

6、iliz-er+2．0g／potelongationfertilizer(T4)．Thechlorophyllandsolubleproteincontents。nitratereductaseactivityandrootactivitywereinvestigatedatdifferentstages．【Result】Theanalyzedparametersdifferedsignificantlyinplantstreatedwithdifferenttreatments．InT2。al

7、ltheparametersincreasedsignificantlyatseedlingstage，whileadecreaseinall嘲oh-servedattilleringandelongationstage．InT4，alltheparameterswerefoundtobesignificantlyhigheratbeth．thetiUeringandtheelongationstages．【Conclusion】Applyingnitrogenfertilizerinthree

8、sphts，eachatseedling，tiUeringandelongnt·ingstagessignificantlyimprovedthechlorophyllandsolubleproteincontent，nitratereductsseactivityandrootactivity，andmaintainedthegrowthanddevelopmentofsugarcaneplants．Keywords：sugarcane；nitrogenapplicationmethod；ph