共 8 条
[1]
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[2]
Babalola O., Lal A., Subsoil gravel horizon and maize growth. I. Effects of gravel size, inter-gravel texture and natural gravel horizon, Plant and Soil, 46, pp. 347-357, (1977)
[3]
Budelman A., Zander P.M., Land-use by immigrant Baule farmers in the Tai region, South-West Cote d'voire (Ivory Coast), Agroforestry Systems, 11, 2, pp. 101-123, (1990)
[4]
Cholick F.A., Welsh J.R., Cole C.V., Rooting patterns of semi-dwarf and tall winter wheat cultivars under dryland field conditions, Crop Science, 17, pp. 637-639, (1977)
[5]
Kang B.T., Grime H., Lawson T.L., Alley cropping sequentially cropped maize and cowpea with Leuceana on a sandy soil in Southern Nigeria, Plant and Soil, 85, pp. 267-277, (1985)
[6]
Lal R., Agroforestry systems and soil surface management of a tropical alfisol. 1. Soil moisture and crop yields, Agroforestry Systems, 8, pp. 7-29, (1989)
[7]
Rao, Sharma M.M., Ong C.K., A study of the potential of hedgerow intercropping in semi arid India using a two-way systematic design, Agroforestry Systems, 11, 2, pp. 243-258, (1990)
[8]
Ssekabembe C.K., Henderlong P.R., Below-ground interactions in alley cropping. Appraisal of first-year observations on maize grown in black locust (Robinia pseudoacacia) alleys, Proceedings of the Second Conference on Agroforestry in North America, 18–21 August, 1991, Springfield, Missouri, pp. 58-73, (1991)