MENG Qing-ying,ZHANG Chun-feng,FENG Peng,et al.Effect of Different Alfalfa on Soil Ourease Enzyme and Soil Nitrogen[J].Northern Horticulture,2014,38(18):198-199.
不同苜蓿品种对土壤脲酶及氮素的影响
- Title:
- Effect of Different Alfalfa on Soil Ourease Enzyme and Soil Nitrogen
- 文章编号:
- 1001-0009（2014）18-0198-02
- Keywords:
- alfalfa; soil; ourease activity; nitrogen
- 分类号:
- S 551+.7
- 文献标志码:
- A
- 摘要:
- 选取国内外共13个品种的苜蓿为试材，研究了不同品种苜蓿对土壤脲酶活性和土壤氮素的影响。结果表明：与国内品种相比，国外根际土壤脲酶活性普遍较高，平均值为49.52 mg/100g，国内品种脲酶活性平均值为45.36 mg/100g；国外品种土壤碱解氮含量普遍较高，平均值为188.07 mg/kg，国内苜蓿品种土壤碱解氮含量平均值为174.30 mg/kg；不同品种苜蓿土壤脲酶活性与土壤碱解氮含量呈显著正相关（P＜0.01），因此可以在一定程度上用土壤脲酶活性来表示土壤氮素肥力的高低。
- Abstract:
- Taking 13 kinds of alfalfa from domestic and foreign as materials，the effect of planting alfalfa on soil ourease activity and nitrogen were studied.The results showed that foreign alfalfa variety had higher ourease enzyme of rhizosphere soil than domestic alfalfa varieties.The average value of foreign alfalfa varieties ourease enzyme of rhizosphere soil was 49.52 mg/100g，and the average value of domestic alfalfa variety ourease enzyme of rhizosphere soil was 45.36 mg/100g.Foreign alfalfa varieties had higher soil available nitrogen than foreign alfalfa varieties，and the average value was 188.07 mg/kg.The average value of domestic alfalfa variety was 174.30 mg/kg.The results of correlation analysis showed that there were positive interrelationships between ourease enzyme of rhizosphere soil and soil available nitrogen (P＜0.01)，which could be used as the biological index to evaluate the soil fertility.
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备注/Memo
第一作者简介：孟庆英（1982-），女，黑龙江佳木斯人，硕士，助理研究员，现主要从事土壤肥料与土壤改良及植物基因工程等研究工作。E-mail：MQY269@126.com.
基金项目：黑龙江省农业科技创新工程资助项目（2012ZD009）。
收稿日期：2014-04-25