土壤管理方式对果-草人工生态系统土壤性质影响  

Effects of Soil Management Ways on Soil Properties of an Artificial Fruit-Grass Ecosystem

作　　者：张猛[1] 张健[1] 徐雄[1] 廖尔华[1] 

机构地区：[1]四川农业大学林学园艺学院

出　　处：《林业科学》2006年第8期44-49,共6页Scientia Silvae Sinicae

基　　金：国家科技部"十五"攻关"四川盆地低山丘陵水土流失综合治理技术与示范"项目部分研究内容。

摘　　要：采用单因素随机区组设计,研究川中丘陵地区退耕还林后不同土壤管理方式对土壤理化性质、土壤微生物数量和土壤酶活性的影响。结果表明:刈割覆盖处理土壤蓄涵水分、保温和降温效果优于其他处理,畜粪还园处理土壤密度最小;土壤养分值以畜粪还园处理最好;土壤微生物数量、酶活性均表现出差异性,以畜粪还园处理最好;土壤微生物数量、酶活性与土壤养分含量之间存在相关关系,可以作为评价土壤肥力的指标。不同土壤管理方式的生态效益以刈割覆盖和畜粪还园处理最好。To explore comprehensive control of soil erosion after the conversion of cropland to forest in hilly areas of the middle Sichuan basin, a single factor experiment with random block design was conducted in an artificial fruit-grass ecosystem to study the influence of different soil management ways on the physical and chemical properties of soil, microbial quantities in soil, and enzyme activities of soil. The reaults showed that the effect of mowing and covering management way on the water conservation, heat preservation, and drop in temperature of soil were better than that of other management ways. Soil density was least and all the chemical nutrient values were highest in the treatment of returning the livestock＇ s feces to the orchard. Microorganism quantity and enzyme activity of soil in all four treatments were significantly different, which was best in the treatment of returning the livestock＇ s feces to the orchard and had a significant correlation with soil nutrient contents. Therefore microorganism quantity and enzyme activity of soil could also be used as an evaluation index of soil fertility. In all treatments, mowing and covering and returning the livestock＇ s feces to the orchard had the best ecological benefits.

关 键 词：果-草人工生态系统 土壤管理 土壤肥力 微生物 酶活性 

分 类 号：S714[农业科学—林学]