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Position: Home > Articles > Effect of NaHSO_3 on Nitrogen Metabolism of Wheat at Reproductive Stage Chinese Journal of Soil Science 2005,36 (6)

NaHSO_3对小麦生殖生长时期氮素代谢的影响

作  者:
秦学;曹翠玲;梁宗锁
单  位:
西北农林科技大学生命科学学院
关键词:
小麦;光合;光呼吸;氮素;NaHSO3
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。
译  名:
Effect of NaHSO_3 on Nitrogen Metabolism of Wheat at Reproductive Stage
作  者:
QIN Xue,CAO Cui-ling,LIANG Zong-suo (College of Life sciences,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,712100,China)
关键词:
Wheat;Photosynthesis;Photorespiration;Nitrogen;NaHSO_3
摘  要:
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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