供氮形态和水分胁迫对苗期水稻吸收氮素营养的影响

doi:10.7668/hbnxb.2008.01.036

摘要/Abstract

摘要： 为探讨不同形态氮素营养对水分胁迫条件下水稻幼苗吸收氮素的影响,采用室内营养液培养及聚乙二醇(PEG6000)模拟水分胁迫处理的方法,在苗期设置3种供氮形态(NH₄⁺-N,NO₃^--N以及NH₄⁺-N和NO₃^--N相同浓度下等体积混合)和2种水分条件(非水分胁迫及水分胁迫)的耦合处理进行研究。结果表明,在非水分胁迫条件下,全NO₃^--NN营养水稻比全NH₄⁺-NN营养水稻的氮素消耗多。在水分胁迫条件下,全NO3--N营养水稻的氮素消耗略有增加;同时供应NH₄⁺-N和NO₃^--N显著促进水稻对氮素的消耗;对全NH₄⁺-N营养水稻氮素消耗的影响不明显。在水分胁迫条件下,同时供应NH₄⁺-N和NO₃^--N增加水稻的氮素积累;对全NH₄⁺-N营养水稻的氮素含量没有明显影响。在非水分胁迫条件下,NH₄⁺-N和NO₃^--N混合营养水稻的氮素利用率在3种供氮形态处理中最高。水分胁迫后复水,同时供应NH₄⁺-N和NO₃^--N显著提高水稻的氮素利用率;水分胁迫对全NH₄⁺-N营养水稻的氮素利用率没有明显的影响,但明显降低全NO₃^--N营养水稻的氮素利用率;无论是非水分胁迫,还是水分胁迫条件下,全NO₃^--N营养水稻的氮素利用率均为最低。

关键词: 水稻, 氮素形态, 水分胁迫, 氮素利用效率

Abstract: By using the method of nutrient solution culture and simulated water stress with PEG6000,the effects ofdifferent nitrogen forms(NO₃^--N,NH₄⁺-N and the mixture of NO₃^--N and NH₄⁺-N)and water statuses(non2water stressand water stress condition)on N uptake of rice plant at the seedling stage were studied. The results showed that:Undernon2water stress,N consumption of NO₃^--N supplied rice plant was higher than that of NH₄⁺-N supplied rice plant.Un2der water stress,supply of mixture of NO₃^--N and NH₄⁺-N significantly promoted nitrogen2use efficiencyof rice plants. Water stress had no significant effect on nitrogen2use efficiency of NH₄⁺-N supplied rice plant,but signifi2cantly reduced in NO₃^--N supplied rice plant. Under non2water stress or water stress,the nitrogen2use efficiency ofNO₃^--N supplied rice plant was the lowest among the three nitrogen forms treatments.

Key words: Rice, Nitrogen form, Water stress, Nitrogen use efficiency

中图分类号:

S143.1

陈晓远, 高志红, 李玉华. 供氮形态和水分胁迫对苗期水稻吸收氮素营养的影响[J]. 华北农学报, 2008, 23(1): 163-167. doi: 10.7668/hbnxb.2008.01.036.

CHEN Xiao-yuan, GAO Zhi-hong, LI Yu-hua. Effects of Nitrogen Forms and Water Stress on Nitrogen Uptake of Rice Plants at the Seedling Stage[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(1): 163-167. doi: 10.7668/hbnxb.2008.01.036.

http://www.hbnxb.net/CN/Y2008/V23/I1/163

参考文献

[1] 钱晓晴,沈其荣,王娟娟,等.模拟水分胁迫条件下水稻的氮素营养特性[J].南京农业大学学报,2003,26(4):9-12.
[2] 陈　贵,周　毅,郭世伟,等.局部根系水分胁迫下不同形态氮素营养对水稻幼苗生长的影响[J]. 中国水稻科学,2006,20(6):638-644.
[3] 宋　娜,郭世伟,沈其荣. 不同氮素形态营养及水分胁迫对分蘖期水稻水分吸收及光合特性的影响[J]. 南京农业大学学报,2003,29(4):64-69.
[4] Feil B. Growth and ammonium:Nitrate uptake ratio of springwheat cultivars under a homogeneous and a spatially separatedsupply of ammonium and nitrate[J]. J Plant Nutri,1994,17(5):717-728.
[5] Hogh2Jensen H,Schjoerring J K. Effects of drought and inor2ganic Nformon nitrogenfixation and isotope discrimination inTrifolium repens[J]. Plant Physiol Biochem,1997,35(1):55-62.
[6] Schortemeyer M,Feil B,Stamp P. Root morphology and nitro2gen uptake of maize simultaneously supplied with ammoniumand nitrate in a split2root system[J]. Ann Bot,1993,72:107-115.
[7] 钱晓晴,沈其荣,徐国华. 配合使用 NH4+2N 和 NO3-2N对旱作水稻生长与水分利用效率的影响[J]. 土壤学报,2003,40(6):895-900.
[8] 周　毅,郭世伟,高迎旭,等.供氮形态和水分胁迫耦合作用对磷在苗期-分蘖期水稻植株不同部位含量与分配的影响[J].中国水稻科学,2006,20(5):505-511.
[9] 周　毅,郭世伟,宋　娜,等.供氮形态和水分胁迫对苗期-分蘖期水稻光合与水分利用效率的影响[J]. 植物营养与肥料学报,2006,12(3):334-339.
[10] 周　毅,郭世伟,陈　贵,等. 胁迫萌发与不同水分胁迫强度下水稻对供氮形态的响应[J]. 南京农业大学学报,2003,29(1):57-62.
[11] 毛达如.植物营养研究方法[M]. 北京:北京农业大学出版社,1994.
[12] 鲁如坤.土壤农业化学分析方法[M]. 北京:中国农业科技出版社,2000.
[13] Khalifa K H,Zidan A. Effect of nitrate addition on efficientuse of ammonium sulfate fertilizer on corn under saline con2dition. Ⅱ. Field experiment[J]. Commun Soil Sci Plant An2nal,2001,32(15/ 16):2373-2393.
[14] Guo S,Bruck H,Sattelmacher B. Effects of supplied nitrogenform on growth and water uptake of French bean(Phaseolusvulgaris L.)Plants[J]. Plant and Soil,2002,239(2):267.
[15] 孙传范,戴廷波,荆　奇,等. 不同生育时期增铵营养对小麦生长及氮素利用的影响[J]. 应用生态学报,2004,15(5):753-757.
[16] Walch2Liu P,Neumann G,Bangerth F, et al. Rapid effectsnitrogen forms on leaf morphogenesis in tobacco[J].J ExperBot,2000,51:227-237.
[17] 周　毅,郭世伟,宋　娜,等. 水分胁迫和供氮形态耦合作用下分蘖期水稻的光合速率、水分与氮素利用
[J].中国水稻科学,2006,20(3):313-318.
[18] 钱晓晴,沈其荣,柏彦超,等. 旱作条件下不同水稻品种的响应特征[J].作物学报,2004,30(6):555-562.

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