核农学报2017，Vol.31Issue(6)：1185-1191,7.DOI:10.11869/j.issn.100-8551.2017.06.1185
不同种植模式对甘肃中部高寒区胡麻田土壤酶活性及土壤养分的影响
Effects of Different Flex Cropping Modes on Soil Enzyme Activities and Soil Nutrients in the Cold Area of Middle Part of Gansu
摘要
Abstract
In order to explore the critical effects of the function of soil enzyme activity and the balance of soil nutrient on continuous cropping obstacles,flax was used as the main experimental material,and the method of located experiment was adopted.Four treatments was designed as flax-wheat rotation (TR),continuous cropping of flax (TC),flax/ wheat intercropping (TI),and uncultivated (TU).The results showed that,at the layer of 0 to 20cm in the soil,TC model obviously decreased the activities of catalase,urease,alkaline phosphatase and sucrase,which is 8.73％,4.17％,1.22％ and 4.44％ lower than TR model,respectively,in the whole growth period.As for the spatial distribution,the four kinds of enzyme activities sharply descended with the increasing of soil depth.However,no significant distinction was found in soil enzyme activity at the layers of 40cm and 60cm.Correlation analysis of soil nutrients and soil enzyme activities indicated that TC model had a significant negative correlation to soil enzyme activity and the balance of soil nutrient,while TR model showed an obvious positive correlation.In a conclusion,TR and TI model could establish a theoretical base and practical experience for reducing and eliminating continuous cropping obstacles.关键词
胡麻/种植模式/连作/土壤酶活性Key words
flax/cropping mode/continuous cropping/soil enzyme activities引用本文复制引用
罗影,王立光,陈军,叶春雷,张仁陟,罗俊杰..不同种植模式对甘肃中部高寒区胡麻田土壤酶活性及土壤养分的影响[J].核农学报,2017,31(6):1185-1191,7.基金项目
国家胡麻产业技术体系(GARS-17-SYZ-6),甘肃省农业科学院科技创新工程学科团队(2015GAAS02) （GARS-17-SYZ-6）
