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棉花学报  2013 

转双价基因棉花对根际土壤酶活性和养分含量的影响

DOI: 1002-7807(2013)02-0178-06, PP. 178-183

Keywords: 转双价基因棉,根际土壤,土壤酶活性,土壤养分

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Abstract:

在田间试验条件下,以3种转双价基因棉和常规棉石远321为研究对象,比较分析转双价基因棉和常规棉石远321根际土壤酶活性及养分的变化。结果表明,转双价Cry1Ac+CpTI基因棉sGK321与石远321根际土壤速效磷和铵态氮含量无显著差异,而硝态氮含量则显著高于石远321;转双价Cry1Ac+Cry2Ab基因棉(双Bt抗虫棉)速效磷和铵态氮含量均显著低于石远321,而硝态氮含量与石远321无显著差异;转双价Cry1Ac+Epsps基因棉(抗虫抗除草剂棉)速效磷和硝态氮含量均显著高于石远321,而铵态氮含量显著低于石远321。sGK321棉与石远321根际土壤脲酶、碱性磷酸酶和过氧化氢酶活性均无显著差异;双Bt抗虫棉土壤脲酶活性显著低于石远321,碱性磷酸酶和过氧化氢酶活性与石远321均无显著差异;抗虫抗除草剂棉与石远321土壤脲酶活性无显著差异,碱性磷酸酶活性显著高于石远321,而过氧化氢酶活性显著低于石远321。表明sGK321棉与石远321根际土壤养分(硝态氮除外)含量和酶活性无显著差异,而双Bt抗虫棉和抗虫抗除草剂棉所呈现的差异是因不同品种所致。

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