摘要
各类人工牧地的生物生产力依次为热性中生型>热性旱生型>暖温性中生型>寒温性中生型>寒温性旱生型。就营养生产力而言,代谢能、消化能、粗蛋白、粗纤维、无氮浸出物、总粗养分和粗灰分以热性中生型人工牧地最高,寒温性旱生型人工牧地的各项营养生产力均为最低。中生型与旱生型比较,其生物生产力和营养生产力皆为前者明显高于后者。与天然牧地比较,在各类有机营养物质中,各类人工牧地的粗蛋白生产力提高幅度最大。
The bio-productivities of each type of artificial rangeland are tropical mesophytism, tropical xeromorphy, temeperate-warm mesophytism, cold-temperate mesophytism, cold-temperate xeromorphy type, decreasingly. As regards nutrtivitie productivities, metabolic energy, digested energy, crude protein, crude fiber, nitrogen-free extract, total crude nutrient and crude ash of tropical mesophytism type are higher than that of other type of artificial rangeland. Each nutritive productivities of cold-temperate xeromorphy type are all lower man mat of other type of artificial rangeland. The bio-productivity and nutritive productivity of mesophytism are higher than that of xeromorphy obviously. The improved range of crude protein productivity for each type of artificial rangeland is higher than that of other organic nutritive matter as compared with relevant nrtural rangeland.
出处
《四川草原》
2004年第3期11-13,共3页
Journal of Sichuan Grassland
基金
中国科学院"九五"重点项目(03972215)资助。
