ZHANG Rui-peng,TONG Bin,FU Lian-shun,et al.Effects of Top-dressing Nitrogen on Protective Enzymes of Soybean Leaves from Different Regions[J].Soybean Science,2009,28(05):833-836.[doi:10.11861/j.issn.1000-9841.2009.05.0833]
氮素对不同来源大豆品种叶片保护酶的影响
- Title:
- Effects of Top-dressing Nitrogen on Protective Enzymes of Soybean Leaves from Different Regions
- 文章编号:
- 1000-9841(2009)05-0833-04
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 采用12个不同来源的大豆品种为试材,并按来源分成3组,分别为俄亥俄当代品种、辽宁当代品种和辽宁老品种,采用苗期追施尿素(0,100,200 kg.hm-2)处理,研究了氮素对大豆叶片保护酶的影响。结果表明:当尿素施用量为100 kg.hm-2时,开花期俄亥俄当代品种与辽宁老品种叶片超氧化物歧化酶活性提高,辽宁当代品种与辽宁老品种结荚期叶片超氧化物歧化酶活性提高。随着施氮量的增加,辽宁当代品种开花期叶片超氧化物歧化酶活性有增加趋势;俄亥俄当代品种结荚期叶片超氧化物歧化酶活性也逐渐增强;不同大豆品种开花期叶片过氧化物酶与过氧化氢酶活性不断增加;和不施肥相比,100 kg.hm-2尿素施用处理使3组不同来源大豆品种鼓粒期叶片过氧化氢酶的活性得到提高。在生产上,采用100 kg.hm-2尿素追肥处理,可以提高大豆叶片保护酶活性,进而提高大豆的抗逆能力。
- Abstract:
- Nitrogen is very important for soybean growth.It is controversy whether additional nitrogen fertilizer needed or not in soybean production as soybean rhizobium can fix nitrogen.The experiment was carried out by using twelve soybean cultivars from different regions.And the cultivars were divided into three groups:current Ohio cultivar,current Liaoning cultivar and old Liaoning cultivar.Urea fertilizer (0,100,200 kg.ha-1) was top-dressed at soybean seedling stage.The activity of SOD,POD and CAT,three protective enzymes of soybean leaves at blooming,podding and grain filling were measured.Under 100 kg.ha-1nitrogen fertilizer treatment,the SOD activity of current Ohio cultivar and old Liaoning cultivar was increased at blooming stage,while SOD activity of current Liaoning cultivar and old Liaoning cultivar was increased at podding stage.The SOD activity showed increasing trend with the level of nitrogen fertilizer for current Liaoning cultivar at blooming stage,and current Ohio cultivar at podding stage.The POD and CAT activity of the three group soybean cultivar increased with the level of nitrogen fertilizer ascending at blooming stage.The CAT activity of three groups soybean cultivar improved in the treatment of 100 kg.ha-1urea fertilizer than that of control at grain filling stage.Results suggest that applying 100 kg.ha-1urea fertilizer by top-dressing can improve protective enzymes activity of leaves for different soybeans.
参考文献/References:
[1]董钻.大豆栽培生理[M].北京:农业出版社,1997.(Dong Z.Soybean cultivation physiology[M].Beijing:Agricultural Press,1997.)
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备注/Memo
基金项目:辽宁省科技厅资助项目(2008201005)。