湖北农业科学 ›› 2022, Vol. 61 ›› Issue (24): 45-48.doi: 10.14088/j.cnki.issn0439-8114.2022.24.010

• 资源·环境 • 上一篇    下一篇

蓄雨后稻田氮、磷特征及对水稻生长的影响

叶浩1,2, 黄必善1, 丁伟1, 肖斌1, 赵圣帅1, 张萍2   

  1. 1.天门市农田灌溉排水试验站,湖北 天门 431700;
    2.天门市水利和湖泊局,湖北 天门 431700
  • 收稿日期:2021-11-18 出版日期:2022-12-25 发布日期:2023-01-18
  • 作者简介:叶浩(1990-),男,湖北应城人,农艺师,硕士,主要从事农业水利与环境研究,(电话)17762502576(电子信箱)1127559490@qq.com。
  • 基金资助:
    湖北省水利厅重点项目(HBSLKY201804); 国家重点研发计划项目(2016YFD0800503)

Characteristics of nitrogen and phosphorus in paddy field after rain storage and its effects on rice growth

YE Hao1,2, HUANG Bi-shan1, DING Wei1, XIAO Bin1, ZHAO Sheng-shuai1, ZHANG Ping2   

  1. 1. Tianmen Experiment Station of Farmland Irrigation and Drainage, Tianmen 431700, Hubei, China;
    2. Tianmen Bureau of Water Resources and Lakes, Tianmen 431700, Hubei, China
  • Received:2021-11-18 Online:2022-12-25 Published:2023-01-18

摘要: 为探索蓄雨灌溉后稻田氮、磷特征以及对水稻(Oryza sativa L.)生长的影响,以水稻常规浅水勤灌为对照,并基于对照设置3种蓄雨上限(100、80、60 mm),在自然降水条件下开展水稻蓄雨灌溉测坑试验,分析各蓄雨处理田面水氮、磷特征以及对作物农艺性状的影响。结果表明,在施肥量、灌溉水质、溶质一致条件下,各蓄雨处理田面水的硝态氮、铵态氮、总氮、总磷浓度均无显著差异(P>0.05),并随时间后移田面水各物质浓度逐渐下降;各处理下水稻农艺性状无显著差异(P>0.05),说明蓄雨对水稻农艺指标无影响。总体来看,在平水年和枯水年,低于100 mm蓄雨对田面水氮、磷浓度和作物生长发育无显著影响,从节水、减排角度可以广泛推广。

关键词: 蓄雨灌溉, 水稻(Oryza sativa L.), 田面水, 水环境, 农艺性状, 扩容纳污

Abstract: To explore the characteristics of nitrogen and phosphorus in paddy fields and the effects on rice(Oryza sativa L.) growth after rain storage irrigation, three kinds of storage ceiling (100 mm, 80 mm and 60 mm) were set based on frequent irrigation with water at the depth of just covering the field surface that was taken as control. The pit test of rain storage irrigation for rice was conducted under natural precipitation, and nitrogen and phosphorus characteristics of the surface water in field and the final impact on crop agronomic traits after rain storage in each treatment were analyzed. The results showed that there was no significant difference (P>0.05) in the concentrations of nitrate nitrogen, ammonium nitrogen, total nitrogen and total phosphorus in the surface water among rainwater storage treatments under the condition of the same fertilizer amount, irrigation water quality and solute, and the concentrations of each substance in the surface water of each rainwater storage treatment gradually decreased with time. There was no significant difference (P>0.05) in the agronomic traits of rice among treatments, and rain storage had no effect on the agronomic traits of rice. In conclusion, in normal and dry years, rain storage below 100 mm has no significant impact on nitrogen and phosphorus of surface water in field, and crop growth and development, in the perspective of water saving and emission reduction, it can be widely promoted.

Key words: rain storage irrigation, rice(Oryza sativa L.), field water, water environment, agronomic trait, expand pollution capacity

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