6种热带亚热带豆科牧草抗寒性及营养品质比较

发布时间：2018-06-02 16:39

本文选题：青饲料 + 抗寒性　；参考：《草业科学》2017年04期

【摘要】：为了筛选华南地区适宜的优质冬季青饲料草种,本研究比较了旋扭山绿豆(Desmodium intortum)、大叶山蚂蟥(Desmodium laxiflorum)、异果山绿豆(Desmodium heterocarpum)、显脉山绿豆(Desmodium reticulatum)、糙毛假地豆(Desmodium heterocarpum var.strigosum)和柱花草(Stylosanthes guianensis)6种热带亚热带豆科牧草在广州越冬期的抗寒性及营养品质。结果表明,除柱花草外,其它5种豆科牧草均能保持青绿越冬,其中旋扭山绿豆和大叶山蚂蟥的叶绿素含量均显著高于其它牧草(P0.05)。旋扭山绿豆的净光合速率最高(P0.05),其次是大叶山蚂蟥(P0.05),因此这两种牧草具有相对较强的抗寒性;与其它牧草相比,旋扭山绿豆在冬季能保持较高的粗蛋白含量(15.99%~20.26%)(P0.05)以及较低的洗涤纤维(NDF 27.92%~30.89%、ADF 23.96%~27.06%)和缩合单宁含量(6.05~11.95mg·g~(-1))(P0.05),因而具有较高的营养价值。因此,旋扭山绿豆可以作为华南地区冬季豆科青饲料的潜在优选草种。
[Abstract]:In order to select high quality winter forage grass species in South China, In this study, the cold resistance and nutritional quality of Desmodium intortumus, Desmodium laxiflorumus, Desmodium heterocarpa, Desmodium reticulatumum, Desmodium heterocarpum. Strigosuma and guianensis)6 species of tropical subtropical legumes in Guangzhou during winter were compared with those of Desmodium intortum, Desmodium laxiflorum, Desmodium heterocarpa, Desmodium reticulatumum, and Styvar. strigosuma, respectively. The results showed that the other five legume forages could keep green and overwintering except for Stylosanthes, and the chlorophyll content of mung bean and Leech were significantly higher than that of other forages (P0.05). The net photosynthetic rate of mung bean in Xunwushan was the highest (P0.05), followed by Leech (P0.05). Therefore, these two forages had relatively strong cold resistance, and compared with other forages, In winter, the content of crude protein of mung bean in Xuan wushan can keep a high crude protein content of 15.999.26% (P0.05) and a lower amount of washing fiber (NDF 27.92T = 30.89% ADF23.9627.0610) and the content of condensed tannin (6.05 ~ 11.95mg / g) -1P0.05m, so it has higher nutritional value. Therefore, Xunwushan mung bean can be used as a potential optimal selection of legume forage in South China.
【作者单位】：华南师范大学生命科学学院;广东省华南牧草工程技术研究中心;连州市东篱种养实业有限公司;
【基金】：广东省科技计划项目(2013B020501003)
【分类号】：S54;S816

【相似文献】