| The study investigated the legume-grass mixture cutting grassland and chose Dactylis glomerata L.,Phlemu pretense L., Broumis inermis L., Medicago stativa L., Trifolium pratens L., Onobrychis viciaefolia L., Avena sativa L., Vicia sativa L. as experimental material. The research evaluated the production performance of the mixture grassland under the different species and ratios through 2 different evaluation methods. Perennial legume-grass mixture grassland for fading horse was established in 5, 6 species and 3︰7, 2 ︰ 8 of legume-grass ratios with Dactylis glomerata L., Phlemu pretense L., Broumis inermis L.,Medicago stativa L., Trifolium pratens L., Onobrychis viciaefolia L.. Annual legume-grass mixture grassland for fading horse was established in 6︰4, 5︰5 and 4︰6 of legume-grass ratios with Avena sativa L. and Vicia sativa L.. The results were as follows:(1) Evaluation of production performance based on forage yield in the perennial legume-grass mixture grassland from good to poor was A14, A3, A7, A1, A2, A8, A5, A6, A12, A4, A13, A11, A10, A9. The higher yield of mixed treatments was A3(grass ︰ legume=7 ︰ 3, D. glomerata23.3%+P. pratense23.3%+B.inermis23.3%+M. stativa15%+T. pratens15%), A7(grass ︰ legume =7 ︰ 3, D. glomerata23.3%+P.pratense23.3%+B. inermis 23.3%+T. pratens15%+O. viciaefolia 15%), A1(grass ︰ legume =7 ︰ 3, D.glomerata 23.3%+P. pretense 23.3%+B. inermis23.3%+M. stativa 10%+T. pratens10%+O. viciaefolia10%). The yield was respectively 1156.55 g·m-2、1109.16 g·m-2、1105.06 g·m-2. The lower yield of mixed treatments was A5(grass ︰ legume =7 ︰ 3, D. glomerata23.3%+P. pratense23.3%+B. inermis23.3%+M.stativa15%+O. viciaefolia 15%), A6(grass︰legume =8︰2,D. glomerata 26.7%+P. pratense26.7%+B.inermis 26.7%+ M. stativa 10%+O. viciaefolia10%), A4(grass ︰ legume =8 ︰ 2, D. glomerata26.7%+P.pratense26.7%+B. inermis26.7%+M. stativa10%+T. pratens10%), The yield was respectively 728.09g·m-2、884.88 g·m-2、1050.56 g·m-2.(2) In the perennial legume-grass mixture grassland the forage yield of each mixed treatments in the second year was higher than the first year because the mixed treatments came into the high yield period in the second year. The yield of CP, EE, Ca, P and DE was higher than grass forage monoculture but the yield of NDF and ADF was also higher than grass forage monoculture.(3) The production performance of perennial legume-grass mixture grassland was evaluated by using grey relational analysis and the order from good to poor was: A14, A3, A1, A5, A2, A7, A12, A8, A9, A6, A13, A4,A11, A10. Evaluation of production performance for legume-grass mixture grassland was based on nutrient needs of horses and the results were as follow: The production performance of treatments was evaluated by using the standard of working horse’s(moderate exercise) nutritional requirements and the order from good to poor was: A14, A3, A7, A1, A2, A8, A5, A6, A12, A4, A13, A9, A10, A11. The production performance of treatments was evaluated by using the standard of working horse’s(heavy exercise) nutritional requirements and the order from good to poor was: A14, A5, A3, A12, A1, A2, A6, A7, A8, A13, A4, A9, A11, A10.The production performance of treatments was evaluated by using the standard of Pregnant Mares(11months) nutritional requirements and the order from good to poor was: A14, A3, A1, A2, A7, A8, A5, A12, A6,A13, A4, A10, A11, A9. The production performance of treatments was evaluated by using the standard of lactating mares’(average value of 3 months after delivery) nutritional requirements and the order from good to poor was: A14, A12, A3, A2, A1, A5, A6, A13, A7, A8, A4, A9, A11, A10.(4) Evaluation of production performance was based on forage yield in the annual legume-grass mixture grassland and the results showed that the highest yield of oat and common vetch mixed treatments was 6︰4 mixture(M1). The next was that 5︰5 mixture(M2) and then was oat monoculture(CK麦), the fourth was 4︰6 mixture(M3). The lowest forage yield of treatments was common vetch monoculture(CK豆).(5) The yield of mixed treatments increased with the oat mixed ratios increasing in annual legume-grass mixture grassland. Land equivalent ratio of mixed treatments was over 1, which could improve land utilization rate. The CP, Ca content and yield of mixed treatments increased with the common vetch mixed ratios increasing, but the yield of NDF, ADF, EE, P and digestible energy decreased.(6) The production performance of annual legume-grass mixture grassland for fading horse was evaluated by using grey relational analysis and the results were that the best production performance of treatments was common vetch monoculture(CK豆). The next was M2 and then was M1, the fourth was oat monoculture(CK麦). The last was M1. Evaluation of production performance for legume-grass mixture grassland was based on nutrient needs of horses and the results were as follow: The production performance of treatments was evaluated by using the standard of stallion’s(prime horse) nutritional requirements and the order of its production performance was: M3, M1, M2, CK豆, CK麦. The production performance of treatments was evaluated by using the standard of working horse’s(moderate exercise)nutritional requirements and the order of its production performance was: M3, M2, CK豆, M1, CK麦. The production performance of treatments was evaluated by using the standard of working horse’s(heavy exercise) nutritional requirements and the order of its production performance was: CK豆, M1, M2, CK3, CK麦. The production performance of treatments was evaluated by using the standard of Pregnant Mares(11months) nutritional requirements and the results were: M2, M3, CK豆, M1, CK麦. The production performance of treatments was evaluated by using the standard of lactating mares’(average value of 3months after delivery) nutritional requirements and the order of its production performance was: CK豆, M2,M3, M1, CK麦.(7) The production performance of treatments was evaluated by using the standard of horse’s nutritional requirements. This research first put forward the difference method of nutrition requirement. The relative balance formula: %100)(YRD10i10′-=YXThe scores of production performance formula:?==1APWiiiiiWP The evaluation standard was that the weight of DE was 0.4; The weight of CP was 0.4;The weight of Ca was 0.1; The weight of P was 0.1; Wi was the scores of DE and nutrient index. Wi was obtained from RDi; When RDi<- 10%, Wi was 0; When- 10%≤RDi≤10%, Wi was 1; When10%<RDi≤25%, Wi was 2; When 25%<RDi≤50%, Wi was 3; When 50%<RDi≤100%, Wi was 4; When100%<RDi, Wi was 5. |
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