不同改良措施对盐碱化草地植被和土壤肥力的影响  

Effect of Different Improved Measures on Vegetation and Soil Fertility of Saline-alkali Grassland

作　　者：唐鸿宇[1] 杨晓松[2] 沈景林[1] 张成武[3] 白雪[1] 郭瑞萍[1] 李海龙[1] 武霞[1] 

机构地区：[1]吉林大学畜牧兽医学院,吉林长春130062 [2]通辽市畜牧研究所,内蒙古通辽028000 [3]吉林省前郭县草原管理站,吉林松原131100

出　　处：《草业与畜牧》2007年第10期1-3,7,共4页Pruataculture & Animal Husbandry

基　　金：吉林省发改委西部草地研究课题"盐碱化草地植被恢复;重建与可持续利用技术示范"

摘　　要：通过改良试验研究,3种措施都改善了草地生境,增加土壤速效养分,增加牧草在草群中所占的比重。施肥改良使豆科和菊科牧草在草群中比重分别比对照区增加39.9%～19.8%和27.5%～34.4%,使禾本科牧草比重降低21.3%～15.3%,可食牧草产量增加22.0%～57.8%;围栏封育使豆科和菊科牧草分别增加26.7%～13.4%和4.7%～9.0%,可食牧草产量增加13.1%～78.0%。浅耕翻使豆科和菊科牧草比重分别增加27.3%～17.7%、23.2%～36.3%,禾本科牧草比重降低12.1%～10.1%,可食牧草产量增加-28.5%～28.6%。由此得出,施肥和围栏封育是草地改良的有效途径。In this study, the three measures all improved the grassland habitat, increased the soil fast-acting nutrient and forage grass proportion in the grass group.The fertilizing measure had a significant improved effect on leguminosae and composite forage grass, which proportions in the grass group were increased by 39.9%-19.8% and 27.5%-34.4% respectively than the control farm plot, but the gramineae forage grass proportion reduced by 21.3%- 15.3%, the yield of edible forage grass increased by 22.0%-57.8%. The fencing measure made the leguminosae and composite forage grass proportion increased by 26.7%-13.4% and 4.7%-9.0% respectively, the yield of edible forage grass increased by 13.1%-78.0%. The Shallow Ploughing measure made the leguminosae and composite forage grass proportion increased by 27.3%-17.7% and 23.2%-36.3% respectively, but the gramineae forage grass proportion reduced by 12.1%-10.1%, the yield of edible forage grass increased by -28.5%-28.6%. It was clear that the mearures of fertilizing and fencing were effective ways to improve grassland.

关 键 词：施肥 围栏封育 浅耕翻 改良 盐碱化草地 

分 类 号：S812.8[农业科学—草业科学]