Nitrogen Status and Utilization in Rhizosphere of Rice-中国Betway体育网页登陆

摘要 Agreenhousepotexperimentwasconductedwithhybridrice(OryzaSativaL.)inordertostudyNStatusandutilizationintherhizosphereofrice,Theexperimentwascomposedofthreetreatments:withoutN,15NH4-Nand15NO3-N.Plantrootswereseparatedfromthesoilbyanyloncloth,and1mmincrementsofsoil,movinglaterallyawayfromtheroots,weretakenandanalyzedforvariousNfroms.ThelabelledNintheplantsrangedfrom67\51%to69.24%ofthetotalamountofNabsorbedbythericeseedlingswiththelabelledfertilizerNtreatments.ThisshowsthattheNinthePlantscamemainlyfromthefertilizers.However,theNabsorbedbythericeseedlingsaccountedforlessthan35%ofthetotalamountoftheNdepletioninthesoilnearthericeroots,indicatinganimportantNlossintherhizosphereofrice.Thesoilredoxpotential(alltreatments)andtheconcentrationofthelabelledNO3-N(thelabelledNH4-Ntreatmentonly)decreasedasthedistancefromthericerootsincreasedintherhizosphereofrice.Incontrast,theconcentrationofthelabelledNH4-Nincreasedasthedistanceuincreasedinthesamesoilzone.Theseresultssuggestedthatnifrificationoccurredinthesoilaroundthericeroots.Therefore,thereasonfortheNlossintherhizosphereofricemightbetheNO3movementintothereductivenon-rhizospheresoil(submerged)wheredenitrificationcantakeplace.

1Feng ZHAO;Chun-mei XU;Wei-jian ZHANG;Xiu-fu ZHANG;Feng-bo LI;Jian-ping CHEN;Dan-ying WANG.Effects of Rhizosphere Dissolved Oxygen Content and Nitrogen Form on Root Traits and Nitrogen Accumulation in Rice.作物学,2011-04.
2LIN Zhong-cheng;DAI Qi-gen;YE Shi-chao;WU Fu-guan;JIA Yu-shu;CHEN Jing-dou;XU Lu-sheng;ZHANG Hong-cheng;Huo Zhong-yang;Xu Ke;WEt Hai-yan.Effects of Nitrogen Application Levels on Ammonia Volatilization and Nitrogen Utilization during Rice Growing Season.作物学,2012-02.
3Palaniyandi VELUSAMY;J. EBENEZAR IMMANUEL;Samuel S. GNANAMANICKAM.Rhizosphere Bacteria for Biocontrol of Bacterial Blight and Growth Promotion of Rice.作物学,2013-05.
4LIU Jianping;GUO Daoqing;ZHU Juanyue;CHEN Xiaofeng.Status and development of the comprehensive utilization of the steel slag at Baosteel.钢铁冶金,2011-02.
5ZHUZHAO－LIANG.Efficient Management of Nitrogen Fertilizers for Flooded Rice in Relation to Nitrogen Transformations in Flooded Soils.土壤学,1992-02.
6Khalid Rehman HAKEEM;Ruby CHANDNA;Altaf AHMAD1;Muhammad IQBAL.Physiological and Molecular Analysis of Applied Nitrogen in Rice Genotypes.作物学,2012-03.
7WANG Cai-lin.Status and Prospects of Hybrid Rice Breeding in Jiangsu, China.作物学,2005-03.
8WANGZHENGYIN;XUWEIHONG;等.Kinetics of Nitrogen and Potassium Uptake by Various Rice Cultivars at Differnt Nitrogen Lvels from Purple Soil.土壤学,1998-04.
9Deepti SRIVASTAVA;Md SHAMIM;Mahesh KUMAR;Anurag MISHRA;Pramila PANDEY;Deepak KUMAR;Prashant YADAV;Mohammed Harrish SIDDIQUI;Kapildeo Narayan SINGH.Current Status of Conventional and Molecular Interventions for Blast Resistance in Rice.作物学,2017-06.
10CHEN Juan WANG Zhong CHEN Gang Mo Yi-wei.Effects of Nitrogen Fertilizer Treatments on Filling and Respiratory Rate of Caryopsis in Rice.作物学,2006-03.

Nitrogen Status and Utilization in Rhizosphere of Rice

来源期刊

相关推荐

同分类资源更多

相关关键词