摘要： 采用大田试验方法研究了转基因棉花种植对根际土壤酶活性的影响。结果表明,转基因棉花种植对其根际土壤酶活性的影响依棉花品种、生育期、土壤酶种类不同而略有不同,但是均在花铃期、衰老期表现出一致的影响。种植两种转基因棉花在花铃期对根际土壤脲酶活性的影响表现出显著抑制作用,对土壤磷酸单脂酶活性表现出显著促进作用,而衰老期对磷酸单脂酶活性则表现抑制作用显著,对根际土壤转化酶活性的影响表现为显著抑制作用。

关键词: 转基因棉花, 土壤酶, 根际土壤

Abstract: Soil enzyme activities were studied in soil planted with transgenic and notransgenic cotton under field con- ditions. The enzyme activities of urease,phosphatase and invertase were detected at seedling stage,squaring stage,flower and boll stage,boll-opening stage and senescence stage. The results showed that there were some different effects on soil enzyme activities due to different lines,growth stages and soil enzyme,but the same results were obtained at flower and boll stage and senescence stage. Two transgenic cottons planting significantly restrained activities of urease,while in- creased activities of phosphatase at the flower and boll stage significantly,and restrained activities of phosphatase and in- vertase at senescence stage significantly.

Key words: Transgenic cotton, Soil enzyme, Rhizosphere soil

中图分类号: 

• S562.01