元谋干热河谷豆科牧草的引种试验  

Introduction experiment of leguminous forages in the dry and hot valley of Yuanmou region

作　　者：龙会英[1] 张德[1] 朱红业[2] 金杰[1] 史亮涛[1] 张明忠[1] 

机构地区：[1]云南省农业科学院热区生态农业研究所,云南元谋651300 [2]云南省农业科学院科研管理处,云南昆明650231

出　　处：《草业科学》2011年第8期1485-1490,共6页Pratacultural Science

基　　金：世行三期农民用水户协会项目(YNCXYMZ7001);国家科技支撑计划项目(2008BADB3B08);"十一五"国家科技支撑计划项目(2006BAC01A11)

摘　　要：2003-2006年元谋干热河谷对16个豆科牧草进行引种试验,结果表明,参试材料中,除蝴碟豆(Centrosema pubescens)、大叶千斤拔(Flemingia macrophylla)和卵叶山蚂蝗(Desmodium ovalifolium)由于气候差异性不能结实外,其他牧草均能适应该地区种植。其中,银合欢属表现出产量高、叶量大、适口性好等特点。产量排列前3名的牧草为银合欢(Leucaena leucocephala)K636、新银合欢和热研1号银合欢,干草产量分别为26 933.9、24 882.6和22 459.2 kg/hm2,羊对这3种牧草特别喜食。其次是提那罗新罗顿豆(Neotononis wightii),表现出叶量大、干鲜比低等特点,其干鲜比为0.27,茎叶比为0.73,羊对其特别喜食。卵叶山蚂蝗产量最低,茎叶比最高,其干草产量为920.8 kg/hm2,茎叶比为1.96,不适宜作该地区的牧草生产草种。克拉豆(Cratylia argentea)花期应注意防治害虫,提高结荚率。An experiment was conducted to select the suibtable plant legume forages from 16 legume fora ges for the dry and hot valley in the Yuanmou region. This study showed that Centrosema pubescens, Flemingia macropylla, and Desmodium ovalifolium did not seed and the other 13 plant species grew well. Leucaena leucocephala showed the highest yield with a lange number of leaves and good palatability. The top yield was L. leucocephala K636, L. leucocephala, L. leucocephala cv. Reyan No. 1 with 26 93a. 9 kg/ha, 24 882.6 kg/ha, 22 459.2 kg/ha, respectively. The sheep preference for these plants was 5. The Neotononis wightii cv. Tinarroo, Acacia farnesiana and Sesbania grandiflora came to the second due to higher yield and good palatability, and ratio of dry weight to fresh weight and stem/leaf ratio of N. wightii cv. Tinarroo was 0.27 and 0.73. The lowest yield forage was Desmodium ovalifolium with 920.8 kg/ha, and its DW/FW ratio was 1.96. This study suggested that D. ovalifolium was not suitable to be planted in Yuanmou region; and the pest control for Cratylia argentea should be taken during its bloomin5 period to increase pod numbers.

关 键 词：干热河谷 豆科牧草 引种试验 

分 类 号：S54[农业科学—作物学]