6Javier G Q, Marasigan N M. Overseeding of legume on imperative grassland [J]. Philipp J Crop Sci, 1976, 1(2): 81-86
7Teitzel J K, Bruce R C. Fertility studies of pasture soil in the wet tropical coast of Queensland. 3. Basaltic soils [J]. Australian Journal of Exjerimental Agriculture and Animal Husbandry, 1972, 12 (54) : 49-54
8Wilson L L, Fisher D D, Katsigianis T S, et al.Mineral composition of tropical forages and metabolic blood profiles of grazing cattle and sheep on calcium-dominated Caribbean soils [J].Trop Agric(Trinidad), 1981, 58(1): 53-62
9Shaw N H, Bryan W W. Tropical Pasture Research - Principles and Methods [M]. Commonwealth Agricultural Bureaux (C.A.B.). Bucks, England, 1976: 101-133
10Forth H D.土壤科学原理[M].唐耀先,谭世文,张伯泉,等译.第6版.北京:农业出版社,1984.232-257,283-295