修复措施对科尔沁盐碱化草地枯落物分解的影响  

Effects of Restoration Measures on Litter Decomposition in Horqin Aaline-alkali Grassland

作　　者：吴朝 占布拉 王明玖 艳秀 Wu Chao;Zhanbula;Wang Mingjiu;Yan Xiu(Key Laboratory of Forage Cultivation Processing and High Efficient Utilization(MOARA),Key Laboratory of Grassland Resources(MOE),Inner Mongolia Key Laboratory of Grassland Management and Utilization,College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010018;Kezuozhong Banner Grassland Workstation,Tongliao Inner Mongolia,Baokang 029300,China)

机构地区：[1]内蒙古农业大学草原与资源环境学院/草地资源教育部重点实验室/农业农村部饲草栽培、加工与高效利用重点实验室/内蒙古自治区草地管理与利用重点实验室,呼和浩特010018 [2]通辽市科尔沁左翼中旗草原工作站,内蒙古保康029300

出　　处：《草原与草业》2021年第3期14-20,共7页Grassland and Prataculture

基　　金：国家重点研发计划项目“北方草甸退化草地治理技术与示范”(2016YFC0500605)。

摘　　要：对中度和重度盐碱化草地采取铺沙+补播、施有机肥+补播两种修复处理措施,研究枯落物分解一年期间的质量残留率及养分残留率。结果表明:枯落物分解一年后各处理中枯落物分解速率快慢依次为对照>施有机肥>铺沙,处理间差异显著;中度盐碱化草地枯落物质量残留率、木质素、碳、氮和钾残留率等均高于重度盐碱化草地,纤维素残留率低于重度盐碱化草地;枯落物的残留率与碳、钾含量呈正相关,与纤维素和木质素含量呈负相关。The mass and nutrient residual rates of litter decomposition in moderate and severe saline-alkali grassland were studied by sand-spreading+reseeding and organic fertilizer+reseeding two restoration treatments,the results showed that the decomposition rate of litter was in the order of control>organic fertilizer>sand-spreading after one year of litter decomposition,with significant difference among treatments.Litter mass residue rate,lignin,carbon,nitrogen and potassium residue rate of moderately salinized grassland were higher than those of severely salinized grassland,while cellulose residue rate was lower than that of severely salinized grassland;the residue rate of litter was positively correlated with the content of carbon and potassium,but negatively correlated with the content of cellulose and lignin.

关 键 词：盐碱化草地 植被修复 枯落物分解 残留率 

分 类 号：S812[农业科学—草业科学]