Effect of incorporating corn residues into soil on nitrogen transformation in soil-plant ecosystem

Abstract

Abstract: Appropriate field management of crop residues can help to enhance soil productivity and nutrient recycling,and to minimize greenhouse gas emission.In this paper,a ¹⁵N tracer pot experiment was installed to study the effect of incorporating corn stalk and stubble into black soil on the nitrogen transformation in soil-plant ecosystem.The results indicated that compared with single application of N fertilizer,incorporation of corn stalk and stubble could increase soil nitrogen content and enhance its availability,and increase soil microbial nitrogen content.It also promoted the transfer of nitrogen in corn into its kernel,so as to increase the nitrogen use efficiency.Simultaneously,it reduced the content of soil NO₃^--N,and decreased the fertilizer nitrogen loss by 4.7～5.6%.

Key words: Corn residues, Nitrogen transformation, Soil microbial nitrogen, Nitric nitrogen, ¹⁵N tracer

CLC Number:

Q945.1

WANG Shuping, ZHOU Guangsheng, JIANG Yan, LIU Xiaoyi . Effect of incorporating corn residues into soil on nitrogen transformation in soil-plant ecosystem[J]. Chinese Journal of Applied Ecology, 2004, (3): 449-452.

References

[1] Duxbury JM, Lauren JG, Fruci JR.1991.Measurement of the biologically active soil nitrogen fraction by 15N technique.Agric Ecosyst Environ, 34:121 ～ 129
[2] Jiang Y(姜岩).1988.Effect of corn stubble on soil fertility.J Jilin Agric Univ(吉林农业大学学报),10(3):47～52(in Chinese)
[3] Jiang Y(姜岩).1988.Effect of non-decomposed organic material on soil fertility.Soil Sci(土壤通报),19(4):147～150(in Chinese)
[4] Khalil MA-K, Rasmussen RA.1983.Increase and seasonal cycles of nitrous oxide in the earth, s atmosphere.Tellus, 35B: 161～169
[5] Lethbridge G, Davidson MS.1983.Microbial biomass as a source of nitrogen for cereal.Soil Biol Biochem, 15:375 ～ 376
[6] Li C-S(李长生).2000.Loss of soil carbon threatens chinese agriculture:A comparison on agroecosystem carbon pool in China and the U.S.Quatern Sci(第四纪研究),20(4):345～350(in Chirese)
[7] Li G-T(李贵桐),Zhao Z-J(赵紫娟),Huang Y-F(黄元仿),et al.2002.Effect of straw returning on soil nitrogen transformation.Plant Nutr fert Sci(植物营养与肥料学报),8(2):162～167(in Chinese)
[8] Li J-K(李家康),Lin B(林葆),Liang G-Q(梁国庆),et al.2001.Analysis ofthe prospect of chinese chemical fertilizer application.Plant Nutr Fert Sci(植物营养与肥料学报),7(1):1～10(in Chinese)
[9] Marumoto T, Anderson JPE, Domsch LH.1982.Decomposition of 14C- and 15N-labelled microbial cells in soil.Soil Biol Biochem, 14:461 ～ 467
[10] Owen LB, Edwards WM, van Keuren RW.1994.Groundwater nitrate levels under fertilized grass and grass-legume pastures.J Environ Qual, 23:752～758
[11] Peaman GID, Etheridge F, Fraser PJ.1986.Evidence of changing concentrations of atmospheric CO₂, N2O and CH4 from air bubbles in Antarctic ice.Nature, 320: 248 ～ 250
[12] Rasmussen PF, Collins HP.1991.Long-term impacts of tillage, fertilizer and crop residue on soil organic matter in temperature semiarid regions.Adv Agron, 45: 93～134
[13] Sparling GP.1993.Release of ninhydrin-Reactive during fumigation of soil to estimate microbial C and N.Soil Biol Biochem, 25 :1803 ～ 1805
[14] Vance ED, Brookes PC, Jenkinson DS.1987.An extraction method for measuring soil microbial biomass C.Soil Biol Chem, 19:703 ～707
[15] Vaclav Smil.1999.Crop residues:Agriculture' s largest harvest.Biol Sci, 149(4) :299～308
[16] Wang X-B(王小彬),Cai D-X(蔡典雄),Zhang J-Q(张镜清),et al.2001.Nitrogen uptake by corn and N recovery in grain in dry farmland.Sci Agric Sin(中国农业科学),34(2):179～186(in Chinese)
[17] Wu Z-J(武志杰),Zhang H-S(张海山),Xu G-S(许广山),et al.2002.Effect of returning com straw into soil on soil fertility.Chin J Apppl Ecol(应用生态学报),13(5):539～542(in Chinese)
[18] Zagal E,Persson J.1994.Immobilization and remineralization of nitrate during glucose decomposition at four rates of nitrogen additions.Soil Biol Biochem,26:1313～1321
[19] Zhou J-B(周建斌),Chen Z-J(陈竹君),Li S-X(李生秀).2001.Contents of soil microbial biomass nitrogen and its mineralized characteristics and relationships with nitrogen supplying ability of soils.Acta Ecol Sin(生态学报),21(10):1718～1725(in Chinese)
[20] Zhou S-L(周顺利),Zhang F-S(张福锁),Wang X-Y(王兴仁).2002.The spatio-temporal variations of soil NO)-3-N and apparent budget of soil nitrogenⅡ.Summer maize.Acta Ecol Sin(生态学报),22(1):48～53(in Chinese)
[21] Zhuang S-Y(庄舜尧)1995.Effect of nitrogen fertilizer on nitrate accumulation in vegetable.Prog Soil Sci(土壤学进展),23(3):29～35(in Chinese)