Van Kessel C, Hartley C. Agricultural management of grain legumes, has it led to an increase in nitrogen fixation. Field Crops Research, 2000, 465: 165-181.
[4]
Fan F L, Zhang F S, Song Y N, et al. Nitrogen fixation of faba bean (Vicia faba L.) interacting with a non-legume in two contrasting intercropping systems. Plant and Soil, 2006, 283: 275-286.
[5]
Sennaratne R, Ratnasinghe D S. Nitrogen supply groundnuts to maize in a maize plus groundnut intercropping system, as affected by the genotype. Biology and Fertility of Soils, 1993, 15: 215-219.
[6]
Hauggaard-Nielsen H, Andersen M K, Jornsgaard B, et al. Density and relative frequency effects on competitive interactions and resource use in pea-barley intercrops. Field Crops Research, 2006, 95: 256-267.
Madiama C, Paul L G V. Influence of urea on biological N2 fixation and N2 transfer from Azolla intercropped with rice. Plant and Soil, 2003, 250: 105-112.
Ta T C, Faris M A. Effects of environmental conditions on the fixation and transfer of nitrogen from alfalfa to associated timothy. Plant and Soil, 1988,107(1): 25-30.
Ta T C, Faris M A, Macdowall F D H. Evaluation of N15 methods to measure nitrogen transfer from alfalfa to companion timothy. Plant and Soil, 1989, 114(2): 243-247.
O’Hara G W. Mineral constraints to nitrogen fixation. Plant and Soil, 1988, 108: 93-110.
[29]
鲍士旦. 土壤农化分析. 北京: 中国农业出版社, 2005: 264-268.
[30]
Mulvaney R L. Nitrogen-inorganic forms. In: Bigham J M. Methods of Soil Analysis, Part 3, Chemical Methods. Madison: SSSA, ASA, 1996: 1123-1124.
[31]
Santalla M, Amurrio J M, Rodino A P, et al. Variation in traits affecting nodulation of common bean under intercropping with maize and sole cropping. Euphytica, 2001, 122: 243-255.
Maingi J M, Shisanya C A, Gitonga N M, et al. Nitrogen fixation by common bean (Phaseolus vulgaris L.) in pure and mixed stands in semi-arid south-east Kenya. European Journal of Agronomy, 2001, 14(1): 1-12.
[34]
Berdahl J D, Karn J F, Hendrickson J R. Dry matter yield of cool-season grass monocultures and grass-alfalfa binary mixtures. Agronomy Journal, 2001, 93: 463-467.
Hauggaard-Nielsen H, Jensen E S. Evaluating pea and barley cultivars for complementarity in intercropping at different levels of soil nitrogen availability. Field Crops Research, 2001, 72: 185-196.
[37]
Chu G X, Shen Q R, Cao J L. Nitrogen fixation and N transfer from peanut to rice cultivated in aerobic soil in an intercropping system and its effect on soil N fertility. Plant and Soil, 2004, 263: 17-27.
[38]
Xiao Y B, Li L, Zhang F S. Effect of root contact on interspecific competition and N transfer between wheat and faba bean using direct and indirect 15N techniques. Plant and Soil, 2004, 262: 45-54.
[39]
Li L, Zhang F S, Li X L, et al. Interspecific facilitation of nutrient uptake by intercropped maize and faba bean. Nutrient Cycling in Agroecosystems, 2003, 65: 61-71.
