为评价转基因棉花对土壤生态安全风险，采用3个转Bt基因品种及其相应的近等位基因非转基因品种和一个常规品种在大田研究了转基因棉花种植对土壤过氧化氢酶、脲酶和转化酶活性的影响。结果表明转基因棉花种植对土壤酶活性的影响依棉花品种、生育期、土壤酶种类不同而有不同。

Three transgenic Bt cotton and their isogenic non-Bt cotton counterpart another non-Bt cotton cultivar were investigated to evaluate the potential risk of transgenes on the soil ecosystem. The activities of urease, catalase,and invertase were assayed during cotton growth . The results showed soil enzymes activities were affected by different cotton cuiltivars and growth stages.