| 二氧化硫对小麦玉米的急慢性伤害研究 |
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| 引用本文： | 易 秀,张洪生,郑泽群.二氧化硫对小麦玉米的急慢性伤害研究[J].西北农林科技大学学报(社会科学版),1997,25(4):45-50. |
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| 作者姓名： | 易 秀 张洪生 郑泽群 |
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| 作者单位： | 西安地质学院水工系(易秀)，农业部环境保护科研监测所(张洪生)，西安市农业科学研究所(郑泽群) |
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| 摘 要： | 采用开顶式熏气装置进行ＳＯ２对小麦、玉米的伤害试验研究。结果表明，在小麦返青至灌浆期，用ＳＯ２浓度为０．３２２ｍｇｍ－３处理的小麦出现了伤害症状。长时间用浓度为０．３２２，０．２１１和０．１２２ｍｇｍ－３ＳＯ２处理的小麦比对照分别减产２４％，１９％和１３％．在不同生育期不同浓度ＳＯ２对小麦表观光合作用速率及叶片含硫量都有影响。玉米急性伤害的临界剂量为２．５０ｍｇｍ－３×４ｈ，４．９２ｍｇｍ－３×２ｈ，７．３８ｍｇｍ－３×１ｈ，阈值为５．９０ｍｇｍ－３×８ｈ，６．４９ｍｇｍ－３×６ｈ，１１．８０ｍｇｍ－３×４ｈ，１５．００ｍｇｍ－３×２ｈ，１７．００ｍｇｍ－３×１ｈ．
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| 关 键 词： | 二氧化硫 熏气 小麦 玉米 急、慢性伤害 临界剂量 阈值 |
Studies on Chronic and Acute Injury of SO2 to Wheat and Corn |
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| Yi Xiu,Zhang Hongsheng,Zheng Zequn.Studies on Chronic and Acute Injury of SO2 to Wheat and Corn[J].Journal of Northwest Sci-Tech Univ of Agr and,1997,25(4):45-50. |
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| Authors: | Yi Xiu Zhang Hongsheng Zheng Zequn |
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| Institution: | 3 (1 Xian Geology College,Xian,Shaanxi,China,710054) (2 Institute of Agro—Environmental Protection,Mininstry of Agriculture,Tianjin,China,300191) (3 Xian Agricultural Scientific Research Institute,Xi |
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| Abstract: | The Open Top Chamber was adapted for SO2 fumigation.The experiment
results showed:wheats treated by 0. 322mg·m-3 SO2 appeared injury symptoms from the
turning green stage to the milking stage.When the long-time fumigation concentrations
of SO2 were 0. 322mg·m-3, 0. 211mg·m-3 and 0. 122mg·m-3, the yields of wheats decreased by 24%, 19% and 13% as compared with control test, respectively.Different concentrations of SO2 fumigation affectcd apparent photosynthetic efficiencies of wheats and
total amount of sulfur in their leaves at different growth periods. The critical doses of
corn acute injury were 2. 50mg·m-3×4h, 4. 92mg·m-3×2h and 7. 38mg·m-3×1h and
the thresholds were 5. 90mg·m-3×8h, 6. 49mg·m-3×6h, 11. 80mg·m-3×4h, 15. 00mg·m-3×2h and 17. 00mg·m-3×1h. |
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| Keywords: | sulfur dioxide fumigation corn wheat acute/chronic injury critical dose threshold |
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