摘要: 转Bt基因作物的释放对土壤的功能影响近年来已成为生物安全研究中的热点问题，弄清其对土壤功能的具体影响对于生物安全保护至关重要。本文以华北棉区为研究区，通过实验来试图弄清转基因棉对棉区棉花根际土壤性质的影响。研究结果表明：棉花根际土壤pH值大部分上升；土壤有机质中的全碳、全氮，碱解氮除一取样点上升外，其余均下降；速效P、速效K含量则呈上升趋势。另外，土壤pH值、全碳、全氮、碱解氮在种间差异随品系变化而变化，而速效P，速效K则不存在此变化。
Abstract:
With the application and promotion of genetically modified crops, the safe of Bt-transgenic crops on soil had become one of the hot spot. In present study, two parallel experiments were conducted to compare the impacts of transgenic cotton on the rhizosphere soil properties in northern China. Research results show that: the cotton rhizosphere pH value most rise; soil organic matter in a full carbon, total nitrogen, available nitrogen in addition to a sampling point upward, the rest were decreased; available P, K content shows ascendant trend. In addition, the soil pH value, total carbon, total nitrogen, available nitrogen in interspecific differences with the strain variation, and the available P, available K does not exist for this change.