| NaHSO_3对小麦生殖生长时期氮素代谢的影响 |
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| 引用本文： | 秦学,曹翠玲,梁宗锁. NaHSO_3对小麦生殖生长时期氮素代谢的影响[J]. 土壤通报, 2005, 36(6): 913-916 |
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| 作者姓名： | 秦学 曹翠玲 梁宗锁 |
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| 作者单位： | 西北农林科技大学,生命科学学院,杨凌,712100 |
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| 基金项目： | 重点基金项目(30230230)，农业倾斜项目(30070429)，国家重点基础研究专项经费项目(G1999-011707) |
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| 摘 要： | 在盆栽条件下,研究喷施亚硫酸氢钠(NaHSO3)对小麦生殖生长时期光合速率、光呼吸速率及氮素代谢的影响。结果表明:小麦旗叶光呼吸速率与光合速率表现为平行变化,且始终保持为光合速率的30%左右,其变化相对光合速率变化滞后约1h;喷施NaHSO3可以抑制小麦旗叶光呼吸从而提高光合速率,最适喷施浓度为10mmol L-1;喷施NaHSO3虽然可以提高小麦碳素同化,增加籽粒产量,但却不利于氮素同化,造成籽粒蛋白质含量下降。
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| 关 键 词： | 小麦 光合 光呼吸 氮素 NaHSO3 |
| 文章编号： | 0564-3945(2005)06-0913-04 |
| 修稿时间： | 2004-08-27 |
Effect of NaHSO3 on Nitrogen Metabolism of Wheat at Reproductive Stage |
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| QIN Xue,CAO Cui-ling,LIANG Zong-suo. Effect of NaHSO3 on Nitrogen Metabolism of Wheat at Reproductive Stage[J]. Chinese Journal of Soil Science, 2005, 36(6): 913-916 |
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| Authors: | QIN Xue CAO Cui-ling LIANG Zong-suo |
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| Abstract: | Under field conditions,the effect of spraying NaHSO_3 on photosynthesis rate,photorespiration rate and nitrogen metabolism of wheat at reproductive stage were studied.Results showed that photorespiration rate always varied in correspondence with photosynthesis rate.There existed a ratio between the two: the former was roughly 30% of the latter.And it was found that photorespiration rate varied with 1h of delay after photosynthesis rate.The photorespiration rate was inhibited and the photosynthesis rate was increased by spraying NaHSO_3.The optimum concentration of spraying was 10mmol L~(-1).Spraying NaHSO_3 on wheat increased carbon assimilation of wheat and the yield of grain,however,nitrogen assimilation declined,which might result in the decrease of protein content in kernel. |
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| Keywords: | Wheat Photosynthesis Photorespiration Nitrogen NaHSO_3 |
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