中国稻米 ›› 2021, Vol. 27 ›› Issue (3): 93-97.DOI: 10.3969/j.issn.1006-8082.2021.03.019

• 品种与技术 • 上一篇    下一篇

不同减氮模式下籼粳杂交稻甬优1540的产量和肥料利用率

汪峰(), 谌江华, 陈若霞*(), 史骏, 任少鹏, 金树权, 姚红燕   

  1. 宁波市农业科学研究院生态环境研究所,浙江 宁波 315040
  • 收稿日期:2021-03-23 出版日期:2021-05-20 发布日期:2021-05-20
  • 通讯作者: 陈若霞
  • 作者简介:

    第一作者:fwang82@163.com

  • 基金资助:
    宁波市“科技创新2025”重大专项“甬优系列杂交水稻良种良法配套高效栽培技术研究”(2019B10003);国家重点研发计划项目“长江中下游水稻化肥农药减施增效技术集成研究与示范”(2016YFD0200800)

The Yield and Nitrogen Use Efficiency of Indica-japonica Hybrid Rice Yongyou 1540 under Different Fertilizer Reduction Modes

Feng WANG(), Jianghua SHEN, Ruoxia CHEN*(), Jun SHI, Shaopeng REN, Shuquan JIN, Hongyan YAO   

  1. Institute of Eco-Environmental Sciences, Ningbo Academy of Agricultural Sciences, Ningbo, Zhejiang 315040, China
  • Received:2021-03-23 Online:2021-05-20 Published:2021-05-20
  • Contact: Ruoxia CHEN
  • About author:

    1st author: fwang82@163.com

摘要:

于2019年在浙东单季稻区2种不同类型土壤中开展了不同减氮模式下甬优1540产量和氮素利用率差异的田间试验。结果表明,与人工撒施肥处理相比,机械侧深施处理每穗粒数显著提高,稻谷平均增产3.0%~8.2%;氮肥减量20%(192 kg/hm2),撒施条件下会导致水稻一定程度减产,但侧深施方式下可以保证水稻稳产并大幅提高氮肥利用率,平均产量达11.8 t/hm2,氮肥当季回收率、农学利用率和偏生产力分别达36.9%、15.0 kg/kg和61.7 kg/kg。因此,在浙东地区籼粳杂交稻甬优1540宜推广应用氮肥减量侧深施模式,肥料可为基肥和穗肥2次施用。

关键词: 籼粳杂交稻, 氮肥减施, 产量, 氮肥利用率

Abstract:

In order to compare the yield and nitrogen use efficiency of Yongyou 1540 under different nitrogen reduction modes, a filed experiment was carried out in two sites representing different soil type in east Zhejiang single-season rice area in 2019. The results showed that compared with the artificial spreading fertilization treatment, the number of grains per panicle was significantly increased by the mechanized side-deep fertilizer treatment, and the average yield of rice increased by 3.0%~8.2%. Under the condition of reducing nitrogen fertilizer by 20% (192 kg/hm2), the artificial spreading fertilization mode reduced grain yield of rice. However, the mechanized side-deep fertilizer mode could ensure grain yield and significantly increase N use efficiency. Its average yield reached 11.8 t/hm2, moreover, the N recovery efficiency (NRE), N agronomy efficiency (NAE) and N partial factor productivity (NPFP) reached 36.9%, 15.0 kg/kg and 61.7 kg/kg, respectively. Therefore, the indica-japonica hybrid rice Yongyou 1540 should be popularized and applied in the mechanized side-deep fertilizer mode with nitrogen fertilizer reduction in eastern Zhejiang, nitrogen could be used as basal and panicle fertilizer.

Key words: indica-japonica hybrid rice, nitrogen reduction, yield, nitrogen use efficiency

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