【作者】 赵康； 李永宏； 魏博亚； 宝音陶格涛；

【Author】 ZHAO Kang;Li YONG-hong;BAOYIN Taogetao;Wei BO-ya;College of Life Sciences,Inner Mongolia University;

【机构】 内蒙古大学生命科学学院；

【摘要】 2012—2013年生长季节内,我们在典型草原羊草(Leymus chinensis)+克氏针茅(Stipa krylovii)+糙隐子草(Cleistogenes squarrosa)群落实施了以羊草留茬高度6 cm为终牧期的季节性放牧利用试验,以探讨符合实际应用的放牧利用方式。结论如下:1.以群落净初级生产力为目标,则T1(每月放牧)、T3(6、8月放牧)处理为草地最佳放牧利用方式;2.羊群对草场的采食率以T1、T3处理最高,且显著高于T2、T4处理;3.季节性放牧没有显著降低草地群落地下根系的总量,在气候及放牧的综合影响下,各个处理地下根系总量的变化各异;4.生长季节内,放牧对群落地下根系的影响主要表现在生长季末期根系的快速积累期。更多还原

【Abstract】 In growing season of 2012-2013,We controlled community stubble height to 6cm to determine the end time of grazing in different season,by studying the effect of seasonal grazing-use on Leymus chinensis +Cleistogenes squarrosa + Stipa krylovii community in typical grassland of semiarid area of Inner Mongolia.We can draw the conclusion that:(1) Aiming to the hightest of aboveground net primary production(ANPP),treatment T1 and T3 were the best options(2) The rate of intaking biomass by the sheep showed hightest in T1 and T3 and have a significant difference to T2 and T4.(3)Grazing does not effect the root biomass and root biomass variation tendency showed different in all treatments.(4) Grazing tends to reduce root accumulation by comparing the root biomass of all treatments in 0-30 cm soil layer in growing season of 2013.更多还原