[目的]探讨农家肥对大庆地区盐碱土的改良效果.[方法]通过实验室盆栽的方法,在盐碱土中加入一定比例的农家肥(农家肥∶盐碱土=1∶3),待玉米长至3叶期时,通过测定叶片的生理生化指标,研究农家肥对盐碱土的改良效果.[结果]添加农家肥后玉米幼苗可溶性蛋白含量、丙二醛(MDA)含量均显著降低(P＜0.05),叶绿素含量显著升高(P＜0.05),可溶性糖含量变化不显著(P＞0.05).[结论]农家肥通过降低玉米叶片膜质过氧化作用,增加光合作用来缓解土壤对玉米的盐碱伤害,农家肥对盐碱土壤有一定的改良作用.%[Objective] To study the effect of farmyard manure on saline-alkali soil in Daqing.[Method] A certain proportion farmyard manure was added in saline-alkali soil (farmyard manure∶ saline soil =1∶ 3) by the method of laboratory pot,then the changes of physiological and biochemical indexes of blade were determined at the three-leaf stage of corn to clarify the improvement effect of farmyard manure on saline-alkali soil.[Result] After adding farmyard manure,soluble protein content,malondialdehyde (MDA) content were significantly lower (P ＜ 0.05),and chlorophyll content significantly increased (P ＜ 0.05),soluble sugar content was not significant (P ＞ 0.05).[Conclusion] Farmyard manure can improve the salt and alkali damage of corn by reducing the peroxide effect of maize leaves and enhancing photosynthesis.The farmyard manure had a certain improvement effect on saline in Daqing soil.
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