摘要
以呼伦贝尔割草地为对象,在2009-2011年间连续三年进行了不同刈割时期对草地群落生物量、主要植物种盖度、群落多样性及群落养分影响的研究。结果表明：8月1日和8月15日刈割主要植物种生物量较高,不同的刈割时间对细叶白头翁和裂叶蒿生物量的影响较为明显,而冷蒿在不同的刈割时间下生物量变化较小;8月15日刈割群落生物量和群落多样性均保持较高水平,群落的粗蛋白质含量最高,且酸性洗涤纤维和中性洗涤纤维较低。
The effect of cutting on community biomass,main plant coverage,community diversity and nutrients in grassland in Hulunbuir were studied.The results showed that the main plant species biomass was larger on August 1st and 15 th.Pulsatilla turczaninovii and Artemisia laciniata＇s biomass was significantly affected by cutting date,but Artemisia frigida was the opposite.Cutting on August 15 th,the ADF and NDF of community were lower,which was conducive to assimilate for the livestock,but community biomass and diversity were maintaining high level.Besides,the community protein content was the highest.
出处
《中国草地学报》
CSCD
北大核心
2015年第1期90-96,共7页
Chinese Journal of Grassland
基金
农业部公益性行业(农业)科研专项“半干旱牧区天然打草场培育及利用技术研究与示范”(201303060)
“牧区家庭牧场资源优化配置技术模研究与示范”(201003019)
关键词
刈割时期
群落生物量
物种盖度
多样性
Cutting date
Community biomass
Main plant coverage
Community diversity
