荒漠草原不同经营规模牧户草场地上生物量和牧草养分含量比较  

Comparisons of Aboveground Biomass and Forage Nutrient Content in Different Herders' Scale in Desert Steppe

作　　者：塔娜[1] 那日苏[1] 王海[1] 拾涛[1] 

机构地区：[1]中国农业科学院草原研究所/农业部牧草资源与利用重点实验室,内蒙古呼和浩特010010

出　　处：《中国草地学报》2013年第5期156-162,共7页Chinese Journal of Grassland

基　　金：公益性行业(农业)科研专项"牧区家庭牧场资源优化配置技术模式研究与示范"(201003019);中央级公益性科研院所基本科研业务费专项资金(中国农业科学院草原研究所)资助项目(1610332013005)

摘　　要：为揭示荒漠草原不同经营规模牧户草场生态状况,选择内蒙古苏尼特右旗不同经营规模家庭牧场分析比较了其地上生物量和牧草养分含量月动态变化。结果表明:同一放牧时期,不同经营规模牧户鲜草生物量呈现出低规模水平>中规模水平>高规模水平态势。不同经营规模牧户草场主要牧草的初水分和粗蛋白质含量季节性变化有明显差异,同一放牧时期牧草的初水分含量低规模水平>中规模水平>高规模水平,尤以无芒隐子草和多根葱较为明显;牧草粗蛋白质含量在放牧初期(6月份)表现为低规模水平>中规模水平>高规模水平,随着放牧季节的后移含量逐渐降低,而降低程度以低规模水平最为明显,中规模水平次之,高规模水平最小,其中尤以多根葱变化最明显。主要牧草的ADF、NDF含量和能值季节性变化受牧户经营规模水平的影响不显著。In order to identify the ecological condition of herders＇ pasture in different scales, aboveground biomass and forage nutrient content in different herders＇ scale were analyzed. The results showed that at the same grazing time, the fresh biomass in different herders＇ scales displayed an order as： low level〉middle level〉high level. Grazing disturbance influenced grass biomass greatly in forage growth season. The seasonal changes of moisture ence in different scales an order as： low level songorica and Alliurn as： low level〉middle 〉 At the same grazin and crude protein content in main forages had significant differ- g time, moisture in forages in different herders＇ scales displayed 〉middle level〉high level, and regular changes were more obvious in Cleistogenes polyrhizum. CP content in forage in early level〉high level. And then CP content in grazing season. Reducing tent changed most obviou main forages were not aff changes were greatest in low scale level grazing period （in June） showed an order forages gradually reduced along with the and smallest in high scale level. CP consty in Allium polyrhizum especially. Seasonal changes of ADF, NDF and GE in ected by different herders＇ scales significantly.

关 键 词：荒漠草原 经营规模 地上生物量 牧草养分 

分 类 号：S812.5[农业科学—草业科学]