湖北农业科学 ›› 2020, Vol. 59 ›› Issue (7): 33-37.doi: 10.14088/j.cnki.issn0439-8114.2020.07.007

• 资源·环境 • 上一篇    下一篇

不同氮肥调控对水稻分蘖数和叶面积指数的影响

周丽燕1, 黄影华1, 张善炫1, 郭之瑶1, 洪瑞霞1, 王轶林1, 夏丽莎1, 付璐1, 李艳大2, 陈青春1   

  1. 1.仲恺农业工程学院农业与生物学院,广州 510225;
    2.江西省农业科学院农业工程研究所,南昌 330200
  • 收稿日期:2019-08-05 发布日期:2020-06-28
  • 通讯作者: 陈青春,男,江苏连云港人,副教授,博士,主要从事作物精确管理与资源高效利用研究工作,(电子信箱)chenqingchun0414@163.com。
  • 作者简介:周丽燕(1996-),女,广东佛山人,在读本科生,(电话)15818108572(电子信箱)zhouliyan0214@163.com;
  • 基金资助:
    国家重点研发计划资助项目 (2016YFD0300608; 2018YFD020030610)

Effects of different nitrogen fertilizer regulation on tiller number and leaf area index of rice

ZHOU Li-yan1, HUANG Ying-hua1, ZHANG Shan-xuan1, GUO Zhi-yao1, HONG Rui-xia1, WANG Yu-lin1, XIA Li-sha1, FU Lu1, LI Yan-da2, CHEN Qing-chun1   

  1. 1. College of Agriculture & Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
    2. Institute of Agricultural Engineering, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
  • Received:2019-08-05 Published:2020-06-28

摘要: 为明确氮肥施用量对水稻分蘖数和叶面积指数的影响,以广东省主栽品种粤农丝苗和合美占为供试材料,设置5个进行开展了氮肥施用量梯度试验。结果表明,在同一生育期内,水稻植株的总茎蘖数、无效分蘖和叶面积指数均随着施氮量的增大而增大;其中,施氮量、分蘖数和叶面积指数三者之间分别呈显著的正相关关系(r>0.8)。适当的施氮量能增加水稻的分蘖数和叶面积指数,促进其生长发育,但过量增施氮肥会增加无效分蘖数,降低氮肥利用率。

关键词: 水稻, 分蘖数, 叶面积指数, 施氮量

Abstract: In order to clarify the effect of nitrogen fertilizer application on the number of tillers and leaf area index of rice, the main varieties of Yongnongsimiao and Hemeizhan were used as test materials, and five nitrogen fertilizer levels were set for the experiment. The results showed that during the same growth period, the total stem tiller number, ineffective tillers and leaf area index of rice plants increased with the increase of nitrogen application rate; among them, the nitrogen application amount, tiller number and leaf area index, there was a significant positive correlation between them (r>0.8). Appropriate amount of nitrogen application can increase the number of tillers and leaf area index of rice and promote its growth and development, but excessive application of nitrogen fertilizer will increase the number of ineffective tillers and reduce the utilization rate of nitrogen fertilizer.

Key words: rice, tiller number, leaf area index, nitrogen levels

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