湖北农业科学 ›› 2018, Vol. 57 ›› Issue (20): 40-43.doi: 10.14088/j.cnki.issn0439-8114.2018.20.010

• 资源·环境 • 上一篇    下一篇

氮磷配施对麦后复种饲料油菜农艺性状及产量的影响

韦春雨, 贾彪, 何文寿   

  1. 宁夏大学农学院,银川 750021
  • 收稿日期:2018-04-16 发布日期:2018-10-25
  • 通讯作者: 何文寿(1960-),男,教授,主要从事植物营养与施肥研究,(电子信箱)hew818@163.com。
  • 作者简介:韦春雨(1993-),男,江苏南通人,在读硕士研究生,研究方向为植物营养与土壤培肥,(电话)18651372720(电子信箱)1539002642@qq.com
  • 基金资助:
    公益性行业(农业)科研专项(201503120)

Effects of Nitrogen Phosphorus Combined Application on Agronomic Characters and Yield of Brassica napus of Multiple Cropping after Wheat

WEI Chun-yu, JIA Biao, HE Wen-shou   

  1. College of Agronomy, Ningxia University, Yinchuan 750021,China
  • Received:2018-04-16 Published:2018-10-25

摘要: 为探讨适宜饲料油菜(Brassica napus)生产的氮磷用量,研究氮磷施用量对麦后复种饲料油菜生长性状及其产量的影响。以华油杂62号为试验材料,采用双因素三水平随机区组设计,设置3个施氮水平(纯N1=75 kg/hm2、N2=150 kg/hm2、N3=225 kg/hm2),3个施磷水平(P1=60 kg/hm2、P2=120 kg/hm2、P3=180 kg/hm2)。结果表明,氮肥施用量在150~225 kg/hm2时,饲料油菜的农艺性状和产量均有显著改善和提高。不同施磷量对饲料油菜的农艺性状和产量的影响均不显著。不同氮磷组合对饲料油菜生物产量、肥料经济效益影响明显,N2P1处理产量达94 016 kg/hm2,产投比最高(12.68);N2P2处理的饲料油菜产量最高(100 832 kg/hm2),产投比居中,而净收益最高。因此在饲料油菜生育期内配施N 150 kg/hm2、P 120 kg/hm2的肥料用量,能使饲料油菜获得高产,节约肥料成本,增加经济收益。

关键词: 氮磷配施, 生长性状, 饲料油菜(Brassica napus), 产量

Abstract: In order to investigate the amount of nitrogen and phosphorus used for forage rape(Brassica napus) production, the effects of nitrogen and phosphorus application on growth traits and yield of forage rape multiple corpping after wheat were studied. Huayouza 62 was used as the experimental material,and a two-factor three-level randomized block design was used to set three levels of nitrogen application(N1=75 kg/hm2,N2=150 kg/hm2,N3=225 kg/hm2),3 levels of phosphorus application(P1=60 kg/hm2, P2=120 kg/hm2, P3=180 kg/hm2). The results showed that,when the nitrogen application rate was 150~225 kg/hm2,the agronomic traits and yield of the forage rape were significantly improved. The effects of different phosphorus application rates on the agronomic traits and yield of forage rape were not significant. Different combinations of nitrogen and phosphorus had significant effects on biological yield and fertilizer economic benefits of forage rape. N2P1 treatment yield reached 94 016 kg/hm2,and the highest ratio of production to investment (12.68);N2P2 had the highest yield of forage rape (100 832 kg/hm2),yield ratio centered,with the highest net income. Therefore,the application of N 150 kg/hm2,P 120 kg/hm2 fertilizer in the growth period of the forage rape could make the forage rape obtain high yield,save the fertilizer cost,and increase the economic benefits.

Key words: nitrogen and phosphorus combined application, growth traits, forage rape(Brassica napus), yield

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