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当前位置: 首页 > 文章 > 脲酶/硝化抑制剂对土壤脲酶活性、有效态氮及春小麦产量的影响 土壤通报 2008,39 (1) 94-99
Position: Home > Articles > Effects of Urease/Nitrification Inhibitors on Soil Urease Activity, Soil Available N and the Yield of Spring Wheat Chinese Journal of Soil Science 2008,39 (1) 94-99

脲酶/硝化抑制剂对土壤脲酶活性、有效态氮及春小麦产量的影响

作  者：
华建峰;蒋倩;施春健;庄秋丽;姜勇
单  位：
辽宁沈阳110016中国科学院研究生院;中国科学院南京土壤研究所;辽宁沈阳110016中国科学院南京土壤研究所;中国科学院沈阳应用生态研究所;中国科学院研究生院 北京100039
关键词：
脲酶抑制剂;硝化抑制剂;脲酶活性;NH4+-N;产量
摘  要：
通过田间随机区组试验,就缓释尿素对土壤脲酶活性,土壤有效态氮及小麦产量的影响进行了研究。本试验设置4个处理,1)普通尿素(U);2)U+脲酶抑制剂LNS(SRU1);3)SRU1+硝化抑制剂双氰胺(DCD)(SRU2);4)SRU1+硝化抑制剂3,5-二甲基吡唑(DMP)(SRU3)。结果表明,在整个春小麦(TriticumaestivumL.)生育期内,SRU1、SRU2和SRU3处理的土壤脲酶活性低于U处理,且SRU2、SRU3处理的土壤NH4+-N含量在较长时间内维持在较高水平;小麦成熟期,SRU1、SUR2和SRU3处理土壤有效态N含量显著高于U处理(p<0.05);SRU1、SRU2、SRU3处理小麦的生物学性状和产量略高于U处理,但是处理间没有显著差异。
译  名：
Effects of Urease/Nitrification Inhibitors on Soil Urease Activity, Soil Available N and the Yield of Spring Wheat
作  者：
HUA Jian-feng1,2,3, JIANG Qian2, SHI Chun-jian1,3, ZHUANG Qiu-li1,3, JIANG Yong1 (1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; 3. Graduate University of the Chinese Academy of Sciences,Beijing 100039,China)
关键词：
Urease inhibitor; Nitrification inhibitor; Urease activity; NH4+-N; Yield of spring wheat
摘  要：
A field experiment was carried out in Shenyang, Liaoning Province of Northeast China. The aim was to study the effects of urease/nitrification inhibitors on soil urease activity, soil available N and the yield of spring wheat. A completely random design with four treatments, i.e., conventional urea (U), urea amended with a liquid urease inhibitor (SRU1), SRU1 + nitrification inhibitor dicyandiamide (DCD) (SRU2), and SRU1 + nitrification inhibitor 3,5- dimethylpyrazole (DMP) (SRU3) and four replicates were applied. Results showed that during the growth period of spring wheat (Triticum aestivum L.), soil urease activity was lower in SRU1, SRU2 and SRU3 treatments than in U treatment, but SRU2 and SRU3 treatments could remain more soil NH4+-N for a longer time. In addition, soil available N at the ripening stage (p < 0.05), the biological characteristics and the yield of spring wheat in SRU1、SRU2 and SRU3 treatments were higher than in U treatment.

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