草业学报Issue(2)：27-36,10.DOI:10.11686/cyxb2015422
复合微生物肥料对羊草草原土壤理化性质及酶活性的影响
The effect of compound bio-fertilizers on soil physical and chemical properties and soil enzyme activity in Leymus chinensis steppe
摘要
Abstract
Compound bio-fertilizers have recently been developed to improve the performance of bio-fertilizers. These compounds are a mix of inorganic chemical,organic and bio-fertilizers.In this study,we investigated the effect on Leymus chinensis steppe soil fertility of three kinds of compound bio-fertilizer:humic acid,molassesfermentation and alginic acid.We also measured the effects of a mixed application of these three compounds. Results showed that compared to the control there was a significant reduction in total phosphorus in surface soils under the molasses fermentation and three compound mix treatments.Soil organic matter increased signif-icantly,with these increases being higher for the three compound mix than for the humic acid and molasses fer-mentation treatments.The other soil physical and chemical properties measured showed no significant change under each treatment.Soil enzyme activities were significantly affected.Compared with the control,hydrogen peroxide enzyme activity in the 0-10 cm soil layer was significantly reduced in all treatments except for the hu-mic acid compound.Phosphatase activity increased significantly in all cases except for the alginic acid treat-ment.Urease activity was reduced significantly in the humic acid and molasses fermentation treatments.In-vertase activity did not change significantly.In 10 -20 cm soil layer,hydrogen peroxide enzyme activity in-creased significantly in the humic acid treatment while it significantly reduced under the other treatments.In-vertase activity did not change with the three compound mix but reduced significantly under the remaining three treatments.Urease activity decreased only with humic acid treatment,while phosphatase activity did not sig-nificantly change in any of the treatments.Hydrogen peroxide enzyme activity and soil pH were significantly positively correlated,while urease and total nitrogen were significantly negatively correlated.Phosphatase and total phosphorus had a significant negative correlation in topsoil.Invertase activity was significantly positively correlated with organic matter,and was significantly negatively correlated with soil moisture content in the lower soils.In general,soil enzyme activity decreased with increasing depth of soil profile.关键词
羊草草原/复合微生物肥料/土壤肥力/土壤酶Key words
Leymus chinensis/compound/soil fertilizer/soil enzyme引用本文复制引用
权国玲,谢开云,仝宗永,李向林,万里强,毕舒贻,万修福..复合微生物肥料对羊草草原土壤理化性质及酶活性的影响[J].草业学报,2016,(2):27-36,10.基金项目
公益性行业（农业）科研专项经费项目（201303060）和国家牧草产业技术体系（CARS-35）资助。 （）
