棉花学报2012，Vol.24Issue(2)：133-139,7.
种植转双价基因(Bt+CpTI)棉对主要土壤养分和酶活性的影响
Effects of Transgenic Bt+CpTI Cotton Planting on the Soil Main Nutrients and Enzyme Activities
摘要
Abstract
A pot experiment compared transgenic Bt+CpTI cotton cultivar sGK321 with conventional cotton cultivar Shiyuan 321 (check) to investigate the effects of nutrients in rhizosphere soil (total nitrogen, total phosphorus, available phosphorus, organic matter) and the activities of some enzymes (urease, alkaline phosphatase, and catalase) in four growing stages(seedling, budding, flower and boll, boll opening). Results showed that there were no significant differences between the two cotton cultivars in total and available phosphorus in rhizosphere soil during the experimental period. Remarkable differences, however, existed between the transgenic Bt+CpTI cotton cultivar and its conventional check in terms of total nitrogen, organic matter, and enzyme activity in rhizosphere soil. For transgenic Bt+CpTI cotton, total nitrogen at the budding stage, catalase activity at the seedling stage, and alkaline phosphatase activity at the seedling and budding stages were significantly higher than its conventional check Shiyuan 321. By contrast, organic matter in rhizosphere soil at the budding stage, catalase activity at the budding stage, urease activity at the seedling and flower and boll stages, and alkaline phosphatase activity at the seedling stage were significantly lower than the check. Cluster analysis showed that the changes of nutrients and enzyme activities in rhizosphere soil were mainly affected by the growth stages, whereas the impact of transgenic Bt+CpTI cotton planting on the main nutrients and enzyme activities was very limited.关键词
转双价(Bt+CpTI)棉/土壤养分/土壤酶活性Key words
transgenic Bt+CpTI cotton/ soil nutrient/ soil enzyme activity分类
农业科技引用本文复制引用
刘红梅,赵建宁,黄永春,张贵龙,张海芳,杨殿林..种植转双价基因(Bt+CpTI)棉对主要土壤养分和酶活性的影响[J].棉花学报,2012,24(2):133-139,7.基金项目
中国农业科学院院长基金“转Bt基因抗虫棉对AM真菌的影响研究”(201020) （201020）
