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采用盆栽试验 ,模拟干旱胁迫、铜污染 (三级农田 )及不同施肥状况 ,测定了小麦苗期的生物量及叶片中的 SOD活性、MDA和可溶性蛋白含量。结果表明 ,水分、铜污染和施肥三因素对小麦苗期的生物量都有显著影响 ,表现为水分 >施肥 >铜污染 ;水分对 MDA含量的影响大于铜污染和施肥 ,表现为干旱可显著增大叶片 MDA含量 ,并使 MDA/SOD值增大 ;对 SOD和可溶性蛋白 ,水分和铜污染的影响大于施肥的影响 ,表现为干旱胁迫下 ,SOD活性升高 ,可溶性蛋白含量降低 ,而铜污染处理使可溶性蛋白含量升高 ;3种环境因素之间存在交互作用
The pot experiment, simulated drought stress, copper pollution (three farmland) and different fertilization conditions were used to determine the biomass and leaf SOD activity, MDA and soluble protein content in wheat seedling. The results showed that water, copper pollution and fertilization had significant effects on the biomass of wheat seedlings, which showed that water> fertilization> copper pollution. The effect of water on MDA content was greater than that of copper pollution and fertilization, which showed that drought could be significantly increased The content of MDA and the content of MDA and SOD in big leaf increased, the effect on the content of SOD, soluble protein, water and copper was more than the effect of fertilization. Under drought stress, the activity of SOD increased and the content of soluble protein decreased while the content of soluble copper The treatment increased the content of soluble protein; there was interaction between the three environmental factors