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요약정보
刈割时间和降雨量对天然牧草营养品质的影响 / Effects of mowing time and rainfall on the nutritional quality of native grass
Resource Type
Academic Journal
Authors
王伟
;
周天荣
;
肖燕子
;
张培青
;
贾玉山
;
格根图
;
乌仁其其格
;
WANG Wei
;
ZHOU Tianrong
;
XIAO Yanzi
;
ZHANG Peiqing
;
JIA Yushan
;
GE Gentu
;
WU Renqiqige
Source
中国饲料 / China Feed
. (11):99-103
Subject
天然牧草
刈割时间
降雨量
营养品质
能量
Language
Chinese
ISSN
1004-3314
Online Access
Find it @ DONGA
초록
为提高天然牧草利用率,筛选天然牧草适宜刈割时间,探讨不同降雨量对天然牧草营养品质的影响,本研究以典型草原天然牧草为原料,设定12个处理,3次重复,通过双因素方差试验设计,分析天然牧草营养品质和能量变化规律,旨在为草原牧区牧草刈割时间提供理论依据.结果显示:随着刈割时间的推迟,天然牧草干物质(DM)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)含量逐渐增加,在9月10日降雨量为37.5 mm时,DM、ADF和NDF达到最大值,含量分别为56.82%DM、36.96%DM、68.45%DM;粗蛋白质(CP)含量表现为先增加后降低的变化趋势,在8月20日降雨量为37.5 mm时,CP含量达到最大值,为11.81%DM.天然牧草刈割过程中降雨对可溶性碳水化合物(WSC)、总能(GE)和消化能(DE)增加具有促进作用.因此,在8月20日刈割,可获得优质天然牧草,若在8月20日之后刈割,牧草品质降低,难以获得优质牧草,若有适量降雨,可适当推迟刈割时间.
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