鸭茅与伴生草种在不同混播比例下的产量和营养价值  

Studies on yield and nutrition value of mixed pasture with cocksfoot and companion species under different mixture sowing ratios

作　　者：姜哲浩[1] 李硕[1] 张德罡[1] 陈建纲[1] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室/甘肃省草业工程实验室/中-美草地畜牧业可持续发展研究中心,甘肃兰州730070

出　　处：《草原与草坪》2016年第6期68-73,共6页Grassland and Turf

基　　金：农业部全国畜牧总站"草地生态系统关键产品与服务实物量测度研究"项目资助

摘　　要：采用鸭茅、无芒雀麦、白三叶、苜蓿为材料,设置4个单播、15个混播和无牧草播种共20个处理,研究了鸭茅与伴生草种在不同混合比例下的产量和营养价值。试验表明:鸭茅和苜蓿混播时的牧草产量最高,为7 503~14 676 kg/hm^2,并且杂草累积量最低,为26~94 kg/hm^2。处理"30%鸭茅+70%苜蓿"的干物质最大(14 676 kg/hm^2)。与单播相比,混播可增加鸭茅的粗蛋白和纤维含量,处理"90%鸭茅+10%苜蓿"的鸭茅粗蛋白含量最高为19.44%;同时,混播组合中无芒雀麦和苜蓿的粗蛋白含量也高于单播。相反,与单播相比,混播降低了鸭茅的粗灰分含量,而单播时的含量最高,为16.05%。Used cooksfoot,brome,white clover and alfalfa as experimental forages,we designed 4 monoculture treatment [1. cocksfoot;2. Brome（ Bromus inermis）;3. white clover（ Trifolium repens）;4. alfalfa（ Medicago sativa）],15 combinations of cocksfoot mixed with brome,white clover and alfalfa under 5 mixtures ratios and the pasture without sown forage. The yield and nutrition value of all treatments were measured. The results indicated that（1） the yield of the mixture of cocksfoot and alfalfa was the highest,which reached from 7 503 to 14 676 kg/hm^2. The yield of weeds was the lowest,which was 26 ~ 94 kg/hm^2;（2） the dry matter of the treatment 30% CF ＋ 70% L was the highest,which was 14676 kg/hm^2;（3） Compared with the monoculture treatment,the mixture could increase the content of crude protein and fiber of cooksfoot,the crude protein content of cooksffot was the highest（19. 44%） in the treatment 90% ＋ 10% L. The crude protein of brome and alfalfa were higher than that of on monoculture treatment;（4） the crude ash of cooksfoot was decreased in the mixture treatments,In contrast,the crude ash of cooksfoot in the monoculture treatment was higher,which reached 16. 05%.

关 键 词：鸭茅 干物质 营养价值 混播比例 

分 类 号：S543[农业科学—作物学]