欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2021, Vol. 32 ›› Issue (1): 145-153.doi: 10.13287/j.1001-9332.202101.023

• 研究论文 • 上一篇    下一篇

有机无机肥配施对双季稻轮作系统产量、温室气体排放和土壤养分的综合效应

卜容燕1, 李敏1, 韩上1, 程文龙1, 王慧1, 孙志祥2, 唐杉1, 武际1*   

  1. 1安徽省农业科学院土壤肥料研究所/养分循环与资源环境安徽省重点实验室, 合肥 230031;
    2安徽农业大学资源与环境学院, 合肥 230036
  • 收稿日期:2020-07-13 接受日期:2020-11-09 出版日期:2021-01-15 发布日期:2021-07-15
  • 通讯作者: * E-mail: wuji338@163.com
  • 作者简介:卜容燕, 女, 1985年生, 博士。主要从事现代施肥技术和土壤生态学研究。E-mail: burongyan@163.com
  • 基金资助:
    安徽省科技重大专项(17030701055)和公益性行业科研专项(201503122)

Comprehensive effects of combined application of organic and inorganic fertilizer on yield, greenhouse gas emissions, and soil nutrient in double-cropping rice systems

BU Rong-yan1, LI Min1, HAN Shang1, CHENG Wen-long1, WANG Hui1, SUN Zhi-xiang2, TANG Shan1, WU Ji1*   

  1. 1Institute of Soil and Fertilizer, Anhui Academy of Agricultural Sciences/Key Laboratory of Nutrient Cycling and Resource Environment of Anhui Province, Hefei 230031, China;
    2College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
  • Received:2020-07-13 Accepted:2020-11-09 Online:2021-01-15 Published:2021-07-15
  • Contact: * E-mail: wuji338@163.com
  • Supported by:
    Major Science and Technology Project of Anhui Province (17030701055) and the Special Research Project for Public Welfare Industry (201503122).

摘要: 本研究开展了连续3年(2017—2019年)的田间试验,通过设置不施肥(CK)、单施化肥(F)、等氮条件下有机肥配施化肥(FM)(有机肥全部于早稻季施用)3个处理,对双季稻轮作系统作物产量、土壤肥力进行分析,并连续2年(2018—2019年)对单施化肥和有机肥配施化肥处理的CH4和N2O排放进行监测。结果表明: 施肥可以显著提高早、晚稻产量,其中FM处理的增产效果最好,与F处理相比,FM处理早稻和晚稻分别平均增产5.6%和7.2%,且增产效果随着年限的增加表现为增加趋势。FM处理早稻、晚稻和周年轮作CH4排放量较F处理分别增加8.2%、4.8%和6.7%;但N2O排放量分别下降31.4%、5.0%和18.8%。尽管连续2年各处理双季稻轮作系统全球增温潜势差异不显著,但FM处理温室气体排放强度较F处理分别下降6.8%和8.5%。与F处理相比,FM处理土壤有机质、全氮、速效磷和速效钾含量分别增加9.7%、4.1%、30.9%和2.5%。综上所述,在本研究条件下,有机肥集中于早稻季施用替代化肥是增加双季稻产量、提高土壤肥力和降低稻田温室气体排放强度的有效措施。

关键词: 双季稻, 有机肥替代化肥, 产量, 土壤养分, 温室效应

Abstract: We carried out a 3-year field experiment with three treatments: 1) no fertilizer application (CK), 2) chemical fertilizer application (F), and 3) combined organic and chemical fertilizer (FM) in which the total nitrogen inputs were equal with F (organic fertilizer applied in the early rice season). We evaluated the variations of crop yield, CH4 and N2O emission, and soil nutrient. The results showed that fertilizer application could increase rice yield in both early and late rice seasons. Compared with F treatment, FM treatment increased rice yield by 5.6% and 7.2% for early and late rice, respectively. The enhancement of yield was positively correlated with years. Compared with F treatment, CH4 emission in early rice season, late rice season and whole year in the field in FM treatment was increased by 8.2%, 4.8% and 6.7%, respectively, while the N2O emission was deceased by 31.4%, 5.0% and 18.8%, respectively. Organic fertilizer application reduced the greenhouse gas intensity (GHGI) by 6.8% and 8.5%, but there was no significant differences in global warming potential (GWP) across treatments in 2018 and 2019. Compared with F treatment, the content of organic matter, total nitrogen, available phosphorus and available potassium were increased by 9.7%, 4.1%, 30.9% and 2.5%, respectively. Overall, our results suggested FM application in early rice season is an effective measure to increase crop yield, improve soil nutrient, and reduce GHGI.

Key words: double-cropping rice, organic fertilizer replacing chemical fertilizer, yield, soil nutrient, greenhouse effect