四川农业大学学报 ›› 2021, Vol. 39 ›› Issue (4): 518-523.doi: 10.16036/j.issn.1000-2650.2021.04.013

• 资源环境 • 上一篇    下一篇

有机无机肥配施对川中紫色土丘陵区稻田氨挥发的影响

张奇1, 徐娅玲1, 姚莉1, 王宏1, 刘海涛1, 蒲波2, 刘红兵2, 林超文1,*   

  1. 1.四川省农业科学院农业资源与环境研究所,成都 610066;
    2.四川省耕地质量和肥料工作总站,成都 610000
  • 收稿日期:2020-04-26 出版日期:2021-08-30 发布日期:2021-08-30
  • 通讯作者: *林超文,研究员,主要从事农业面源污染研究, E-mail:lcw-11@163.com。
  • 作者简介:张奇,副研究员,主要从事土壤资源利用研究,E-mail:1633573229@qq.com。
  • 基金资助:
    四川省农业科学院现代农业学科建设推进工程(2021XKJS014); 四川省财政创新能力提升工程(2016GYSH-023、2018QNJJ-018)

Effects of Combined Application of Organic and Inorganic Fertilizers on Ammonia Volatilization from Purple Paddy Field in the Hilly Area of Central Sichuan

ZHANG Qi1, XU Yaling1, YAO Li1, WANG Hong1, LIU Haitao1, PU Bo2, LIU Hongbing2, LIN Chaowen1,*   

  1. 1. Agricultural Resources and Environment Institute,Sichuan Academy of Agricultural Sciences,Chengdu 610066,China;
    2. General Station of Arable Soil Quality and Fertilizer of Sichuan Province,Chengdu 610000,China
  • Received:2020-04-26 Online:2021-08-30 Published:2021-08-30

摘要: 【目的】阐明不同施肥方式对稻田NH3挥发损失的影响,以期为减少稻田氮肥损失和提高氮肥利用率提供一定的理论支撑。【方法】利用密闭室连续抽气法研究不同有机无机肥配施处理下稻田NH3挥发特征、田面水含氮量及水稻产量的变化。在等氮量替代条件下,试验共设置5个处理:无N(CK)、单施化肥(T1)、30%有机肥N+70%化肥N(T2)、70%有机肥N+30%化肥N(T3)和100%有机肥N(T4)。【结果】结果表明,纯尿素处理(T1)的NH3挥发总量最高为68.54 kg/hm2。与T1相比,随着有机肥替代比例的增加,NH3挥发总量减少了21.77~49.55 kg/hm2。各处理稻田NH3挥发通量与田面水NH4+-N浓度均呈现显著正相关关系。30%有机肥替代处理水稻产量最高,较常规施肥T1增产4.06%。【结论】整体来看,30%有机肥替代化肥是川中紫色土丘陵区域较为适合的稻田施肥方式,对降低氮肥环境污染风险和提高水稻产量的综合效果最佳。

关键词: 有机无机肥配施, 氨挥发, 水稻, 田面水

Abstract: 【Objective】 The effects of different combined applications of organic and inorganic fertilizers on ammonia volatilization characteristics, nitrogen content in surface water and the rice yield were investigated in a paddy field in the purple soil district by a closed-chamber continuous pumping method. This study aims to clarify the effects of different fertilization methods on ammonia volatilization loss in paddy fields and provide theoretical support for reducing nitrogen loss in paddy fields and improving nitrogen use efficiency. 【Method】 Under the condition of isonitrogenous replacement, five treatments were set: no N (CK), chemical fertilizer application (T1), 30% organic fertilizer N+70% chemical fertilizer N (T2), 70% organic fertilizer N+30% chemical fertilizer N (T3) and 100% organic fertilizer N (T4). 【Result】 The results showed that the total ammonia volatilization of urea treatment (T1) was the largest, which was 68.54 kg/hm2. With the increase of replacement proportion of organic fertilizer, the total NH3 volatilization decreased by 21.77-49.55 kg/hm2. There was a significant positive correlation between NH3 volatilization rate and NH4+-N concentration in paddy field water. The rice yield of 30% organic fertilizer was the highest, which increased by 4.06% compared to that with the conventional fertilizer. 【Conclusion】 On the whole, the combined applications of 30% organic and 70% inorganic fertilizers could be a suitable fertilization method for purple paddy field in the hilly area of Central Sichuan, and could achieve the best comprehensive effect on reducing environmental pollution risk of nitrogen fertilizer and improving rice yield.

Key words: combined application of organic and inorganic fertilizers, ammonia volatilization, rice, paddy water

中图分类号: 

  • S143