摘薹前后追施氮肥对“一菜两用”油菜产量及氮肥利用率的影响

doi:10.14088/j.cnki.issn0439-8114.2018.08.012

湖北农业科学 ›› 2018, Vol. 57 ›› Issue (8): 47-50.doi: 10.14088/j.cnki.issn0439-8114.2018.08.012

摘薹前后追施氮肥对“一菜两用”油菜产量及氮肥利用率的影响

邢烈火¹, 刘波², 吴海亚¹, 李小坤²

1.湖北省武穴市农业局,湖北武穴 435400;
2.农业部长江中下游耕地保育重点实验室/华中农业大学资源与环境学院,武汉 430070

收稿日期:2017-12-13 发布日期:2018-04-25
通讯作者: 李小坤,男,副教授,博士,主要从事作物-土壤养分管理的研究,（电子信箱）lixiaokun@mail.hzau.edu.cn。
作者简介:邢烈火（1969-）,男,湖北武穴人,农艺师,主要从事土壤与肥料研究,（电话）134099577889（电子信箱）wxtfl@163.com
基金资助:
公益性行业（农业）科研专项（201503123）; 国家油菜产业技术体系建设专项（CARS-12）; 中央高校基本科研业务费专项（2662017JC010）

Effects of Topdressing of Nitrogen in the Period of Stem Clipped on the Yield and N Use Efficiency of Oilseed Rape with Dual Purpose for Vegetable and Oil

XING Lie-huo¹, LIU Bo², WU Hai-ya¹, LI Xiao-kun²

1.Wuxue Bureau of Agriculture,Wuxue 435400,Hubei,China;
2.Key Laboratory of Arable Land Conservation of Middle and Lower Reaches of Yangtze River,Ministry of Agriculture/College of Resources and Environment, Huazhong Agricultural University,Wuhan 430070,China

Received:2017-12-13 Published:2018-04-25

摘要/Abstract

摘要： 为了对“一菜两用”油菜合理追肥,采用田间试验研究了油菜摘薹期追施氮肥对油菜子产量及氮肥利用率的影响。结果表明,摘薹前追施氮肥（Q）、摘薹后追施氮肥（H）、摘薹前和后均追施氮肥（QH）处理都可显著提高油菜子产量,与不追肥处理（CK）相比增产6.3%~10.8%;QH处理与Q处理相比显著增产4.2%。摘薹期各追氮处理均可显著提高油菜单株角果数,增幅为18.4%~31.9%,而对油菜的株高、一次分枝数、二次分枝数、每角粒数和千粒重均无显著影响。养分吸收结果显示,摘薹期各追氮处理均可提高油菜植株氮素吸收量,与CK处理相比,Q处理、H处理、QH处理的氮素吸收量分别增加3.2%、17.7%（P<0.05）和15.5%（P<0.05）。不同追氮处理所追施的氮肥吸收利用率差异显著,H处理最高,与Q处理相比增加4.5倍。

关键词: “一菜两用”油菜, 摘薹, 氮, 产量

Abstract: In order to make a reasonable recovery of nitrogen for oilseed rape with dual purpose for vegetable and oil,field trial was conducted to study the effect of topdressing of nitrogen in the period of stem clipped on the yield and N use efficiency. The results showed that topdressing of nitrogen before stem clipped（Q）,topdressing of nitrogen after stem clipped（H）,topdressing of nitrogen before and after stem clipped（QH） could improve the yield of oilseed rape significantly by 6.3%~10.8% compared with that of the treatment without topdressing（CK）. The yield of the QH treatment was increased by 4.2% significantly compared with that of the Q treatment. The application of topdressing of nitrogen in the period of stem clipped could improve the pod number by 18.4%~31.9% significantly,and had no obvious effect on the height,primary branch number,secondary branch number,seeds per pod and thousand-seed weight. The results of nutrient uptakes showed that topdressing of nitrogen before and after stem clipped could improve the N uptakes. The N uptakes of the Q treatment,H treatment and QH treatment were increased by 3.2%,17.7%（P<0.05） and 15.5%（P<0.05） respectively compared to that of the treatment of CK. Significant difference was found in added N use efficiency among different treatments. The N use efficiency of the H treatment was highest,which increased by 4.5 times compared to that of the Q treatment.

Key words: oilseed rape with dual purpose for vegetable and oil, stem clipped, nitrogen, yield

中图分类号:

S565.4

邢烈火, 刘波, 吴海亚, 李小坤. 摘薹前后追施氮肥对“一菜两用”油菜产量及氮肥利用率的影响[J]. 湖北农业科学, 2018, 57(8): 47-50.

XING Lie-huo, LIU Bo, WU Hai-ya, LI Xiao-kun. Effects of Topdressing of Nitrogen in the Period of Stem Clipped on the Yield and N Use Efficiency of Oilseed Rape with Dual Purpose for Vegetable and Oil[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(8): 47-50.

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摘薹前后追施氮肥对“一菜两用”油菜产量及氮肥利用率的影响

Effects of Topdressing of Nitrogen in the Period of Stem Clipped on the Yield and N Use Efficiency of Oilseed Rape with Dual Purpose for Vegetable and Oil

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