模拟酸雨对小麦叶片同化物、生长和产量的影响

来源 :2009农业环境科学峰会 | 被引量 : 0次 | 上传用户：zhshp123456

【摘要】

：

　　以小麦为材料，通过大田试验研究了模拟酸雨对小麦叶片同化物、生长和产量的胁迫效应.结果表明：酸雨胁迫对小麦产量有较大影响，当酸雨pH≤3.5时显著低于对照(P＜0.01)；当pH≤2.5

【作者】

：

麦博儒郑有飞梁骏刘霞吴荣军李璐钟燕川

【机构】

：

南京信息工程大学环境科学与工程学院,南京210044南京信息工程大学应用气象学院,南京210044

【出处】

：

2009农业环境科学峰会

【发表日期】

：

2009年10期

【关键词】

：

模拟酸雨小麦同化物产量

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论文部分内容阅读

　　以小麦为材料，通过大田试验研究了模拟酸雨对小麦叶片同化物、生长和产量的胁迫效应.结果表明：酸雨胁迫对小麦产量有较大影响，当酸雨pH≤3.5时显著低于对照(P＜0.01)；当pH≤2.5时，小麦株高明显变矮，叶片外观出现明显的受害症状，当pH≤3.5时，叶面积和比叶鲜质量显著降低.酸雨胁迫下，小麦叶片叶绿素a、b和类胡萝卜素含量都明显降低，但对叶绿素a的影响更显著.酸雨胁迫导致小麦叶片可溶性糖和还原糖的合成受抑，当pH≤3.5时，受抑作用较强，且酸度越高，影响越大；酸雨胁迫下，小麦叶片的总游离氨基酸和可溶性蛋白质含量均随着酸雨酸度的增加而降低，并分别在pH≤3.5和pH≤4.5时显著低于对照(P＜0.05).

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模拟酸雨对小麦叶片同化物、生长和产量的影响

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