模拟采食对“黑土型”退化草地混播人工植被的影响  

Influence of Simulation Ingestion on Mixed Artificial Vegetation in "Black Soil Type"of Degenerated Grassland

作　　者：施建军[1] 邱正强[2] 马玉寿[1] 王彦龙[1] 董全民[1] 

机构地区：[1]青海省畜牧兽医科学院,西宁810016 [2]河北建筑工程学院,张家口075000

出　　处：《青海畜牧兽医杂志》2008年第5期4-6,共3页Chinese Qinghai Journal of Animal and Veterinary Sciences

基　　金：国家"十一五"科技支撑计划重大项目(2006BAC01A02);青海科技厅三江源科研课题及应用推广项目(2005-SN-1);科技部农业科技成果转化资金项目(2006GB2G200323)资助

摘　　要：对三江源区"黑土型"退化草地混播人工植被进行模拟采食研究。结果表明:①草地生物量随刈割高度增加而降低,优良牧草生物量比例随刈割高度增加而上升,杂类草生物量比例随刈割高度增加而下降。②刈割时间和频率对草地牧草的再生性能影响极显著,随刈割时间的推移和次数增加,群落优势植物的再生生物量逐渐下降,而早期刈割和适宜的刈割频率下牧草的再生速度和强度较高。The research of the influence of simulated ingestion on the mixed artificial vegetation in ＂Black Soil Type＂of degenerated grassland has been coneducted in the the region of source of three rivers. The results were as follows （1）The biomass reduced along with the increased mowing tallness. The proportion of fine forages biomass was climbed along with the increase of the mowing tallness, and the proportion of forbs biomass was declined. （2）The influence of the time and the frequency of the mow on the forage regeneration performancel was extremely remarkable. Increased along with mow time and times, the regeneration biomass of the community dominant vegetation decreased gradually. But with early time mow and the suitable mow frequency, the forage regeneration speed and the intensity was higher.

关 键 词：模拟采食 生物量 刈割高度 刈割频次 再生性能 

分 类 号：S812.8[农业科学—草业科学]