摘要
为了充分利用热带人工林下空间,提高其生态效益及经济效益,进行耐荫性牧草品种筛选试验。结果表明,大多数牧草品种耐荫程度并不同,其中柱花草的L8柱花草耐荫能力较强,其干物质产量为5460.0kg/(hm2.a)(高出热研2号柱花草和热研5号柱花,分别为46.57%,5.40%),植株存活率93.3%,粗蛋白含量为15.33%;禾本科牧草坚尼草属CIAT6299坚尼草在同属中耐荫能力也较强,其干物质产量为11657.0 kg/(hm2.a)(高出青绿黍135.83%),粗蛋白含量为9.02%,植株存活率为94.2%。可见,L8柱花草和CIAT6299坚尼草这两个牧草品种(系)能较好地生长在加勒比松林下,是较为理想的耐荫牧草品种。
This test was studied the shading tolerance of forage varieties to make the best of inter space and improve ecological and economic benefits under Pinus caribaea hursts. The result showed that there were difference in most forage varieties for the shading tolerance. One of the Stylosanthes guianensis varieties L8 display stronger shading tolerance than others, which dry matter content is 5460.0kg/（hm^2.a）-（higher than Stylosanthes guianensis Reyan2 and Stylosanthes guianensis Reyan54, which excesses were 6.75% and 5.4% respectively.）, and it＇s livability is 93.3%, the crude protein is 15.33%. For the Panicum maizimum of Poaceae, Panicum maizimum CIAT6299 forage variety displayed a well shading tolerance, which dry matter content is 11657.0 kg/ （hm^2.a）-（higher than Panicum maizimum, which excesses were 135.83%.）, and it＇s livability is 9.02% and the crude protein is 94.2%. So the Stylosanthes guianensis varieties L8 and Panicum maizimum CIAT6299 varieties were perfect for shading tolerance, which could grow well under Pinus caribaea hursts.
出处
《中国农学通报》
CSCD
2008年第5期284-289,共6页
Chinese Agricultural Science Bulletin
基金
公益性行业(农业)科研专项"人工草地优质牧草生产技术研究示范"(nyhyzx07-022)
关键词
加勒比松林
牧草
品种筛选
Pinus caribaea, forage, varieties selection
