| 脲酶抑制剂NBPT对油菜生长及品质的影响 |
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| 引用本文： | 串丽敏,赵同科.脲酶抑制剂NBPT对油菜生长及品质的影响[J].水土保持学报,2012,26(5):268-271. |
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| 作者姓名： | 串丽敏 赵同科 |
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| 作者单位： | 1. 农业部植物营养与肥料重点实验室,中国农业科学院农业资源与农业区划研究所,北京100081
2. 北京市农林科学院植物营养与资源研究所,北京,100097 |
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| 基金项目： | 国家科技支撑计划项目“沿湖地区农业面源污染阻控关键技术研究”(2007BAD87B01);农业部生态环境保护项目“华北地区大中城市郊区农业生产区域地下水硝酸盐监测与评价”;IPNI中国-加拿大国际合作项目 |
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| 摘 要： | 在盆栽条件下研究尿素中添加脲酶抑制剂NBPT为纯氮施入量的0.5%,1.0%,1.5%,2.0%,2.5%时对油菜(Brassica campestris L.)生长和品质的影响。结果表明,添加NBPT能显著提高油菜生物产量28.3%～33.7%,降低植株体内硝酸盐累积量4.2%～32.6%,同时可不同程度提高植株全氮含量、吸氮量以及氮肥利用率。油菜Vc含量在NBPT1.0%用量时达到最高,吸氮量和氮肥利用率均在NBPT0.5%水平达到最佳,同时又未显著降低Vc和可溶性糖含量。因此,从经济效益考虑,推荐NBPT0.5%用量为本试验条件下的最佳用量。
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| 关 键 词： | 脲酶抑制剂 NBPT 硝酸盐 维生素C 可溶性糖 氮肥利用率 油菜 |
Effects of NBPT Urease Inhibitor on the Growth and Quality of Rape |
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| CHUAN Li-min,ZHAO Tong-ke.Effects of NBPT Urease Inhibitor on the Growth and Quality of Rape[J].Journal of Soil and Water Conservation,2012,26(5):268-271. |
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| Authors: | CHUAN Li-min ZHAO Tong-ke |
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| Institution: | 1.Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilizer,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081; 2.Institute of Plant Nutrition and Resources,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097) |
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| Abstract: | A pot experiment was conducted to determine the effects of NBPT urease inhibitor added to urea on rape(Brassica campestris L.) growth and quality.The amount of NBPT added was equivalent to 0.5%,1.0%,1.5%,2.0% and 2.5% of the total nitrogen(N) applied.Results showed that NBPT significantly increased the biomass yield by 28.3%~33.7%,and reduced the nitrate concentration of rape by 4.2%~32.6%.The total N concentration,N uptake amount and N use efficiency were also improved.Rape Vc had the highest value when the amount of NBPT was added at 1.0% of the total N applied.N uptake and N use efficiency achieved optimum when the amount of NBPT added at 0.5% of the total urea-N applied,and it did not significantly decrease the content of Vc and water soluble sugar.Therefore,NBPT0.5% was the best dosage for this experiment when considering the economic benefit. |
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| Keywords: | urease inhibitor NBPT nitrate Vc water soluble sugar nitrogen use efficiency rape |
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