Xiao Y B, Li L, Zhang F S. Effect of root contact on interspecific competition and N transfer between wheat and fababean using direct and indirect 15N techniques. Plant and Soil, 2004, 262(1): 45-54.
[7]
Li L, Sun J H, Zhang F S, et al. Wheat/maize or wheat/soybean strip intercropping I. Yield advantage and interspecific interactions on nutrients. Field Crops Research, 2001, 71: 123-137.
Li L, Li S M, Sun J H, et al. Diversity enhances agricultural productivity via rhizosphere phosphorus facilitation on phosphorus deficient soils. Proceeding of the National Academy of Science of the United States of American, 2007, 104(27): 11192-11196.
Li L, Yang S C, Li X L, et al. Interspecific complementary and competitive interactions between intercropped maize and faba bean. Plant and Soil, 1999, 212: 105-114.
[22]
Willey R W. Intercropping-its impotence and research needs. Part 1. Competition and yield advantages. Field Crop Abstracts, 1979, 32: 1-10.
[23]
Morris R A, Garrity D P. Resource capture and utilization in intercropping: non-nitrogen nutrients. Field Crops Research, 1993, 34: 319-334.
[24]
Zhang F S, Li L. Using competitive and facilitative interactions in intercropping systems enhances crop productivity and nutrient use efficiency. Plant and Soil, 2003, 248: 305-312.
[25]
Fukai S, Tlenbath B R. Processes determining intercrop productivity and yields of component crop. Field Crop Research, 1993, 34: 247-271.
Shen Q R, Zhu G X. Bi-directional nitrogen transfer in an intercropping system of peanut with rice cultivated in aerobic soil. Biology and Fertility of Soils, 2004, 40: 81-87.