1. 浙江农林大学环境与资源学院,杭州,311300
2. 浙江省农业农村生态与能源总站,杭州,310012
[ "陈子薇(1995-),女,硕士研究生,主要从事农业资源利用研究。E-mail:vitachan1030@outlook.com" ]
纸质出版:2021
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陈子薇, 应珊珊, 刘银秀, 等. 不同施肥类型对稻田氮素流失的影响[J]. 水土保持学报, 2021,35(1):36-43.
CHEN Ziwei, YING Shanshan, LIU Yinxiu, et al. Effects of Different Fertilizer Types on Nitrogen Loss in Paddy Field[J]. 2021, 35(1): 36-43.
陈子薇, 应珊珊, 刘银秀, 等. 不同施肥类型对稻田氮素流失的影响[J]. 水土保持学报, 2021,35(1):36-43. DOI: 10.13870/j.cnki.stbcxb.2021.01.005.
CHEN Ziwei, YING Shanshan, LIU Yinxiu, et al. Effects of Different Fertilizer Types on Nitrogen Loss in Paddy Field[J]. 2021, 35(1): 36-43. DOI: 10.13870/j.cnki.stbcxb.2021.01.005.
采用田间试验探究了不同施肥处理对稻田氮素流失的影响,其中不同施肥包括对照(CK)、常规施肥(CT)、有机肥替代(BS)和炭基肥(CB)4个处理。结果表明:CB和BS组对降低稻田氮素径流流失的效果显著(p < 0.05),其中稻田铵态氮的径流流失总量CT组(20.08 kg/hm2) > BS组(15.53 kg/hm2) > CB组(12.68 kg/hm2) > CK组(0.63 kg/hm2)。通过估算不同深度土壤的铵态氮与硝态氮淋溶流失量可知,BS和CB组对降低稻田氮素淋溶流失的效果有限。CT、BS和CB组中无机氮的表面径流流失总量占施氮量的5.30%~8.30%,淋溶流失总量占施氮量的0.21%~0.27%,说明氮素流失以径流为主。各施肥处理(CT、BS、CB)分别增产18.3%,28.4%,24.9%,达显著水平(p < 0.05)。研究结果说明施用炭基肥和有机肥可显著减少稻田的氮素流失。
This study applied a field experiment to investigate the effects of different fertilizer types on nitrogen loss in a paddy field. The fertilizer types included control (CK)
conventional formula fertilizer (CT)
partial replacement of organic fertilizers to chemical fertilizers (BS) and carbon-based fertilizer (CB). The results showed that the BS and CB had significant effects on reducing nitrogen runoff loss in the paddy field (p < 0.05) and the total runoff loss of ammonium decreased in the following order: CT (20.08 kg/hm2)
BS (15.53 kg/hm2)
CB (12.68 kg/hm2)
CK (0.63 kg/hm2). The estimated nitrogen leaching loss showed that BS and CB had no significant effects on reducing nitrogen leaching loss from the paddy field. The inorganic nitrogen (ammonium and nitrate) runoff loss under CT
BS and CB accounted for 5.26%~8.31% of fertilizer application
while leaching loss accounted for 0.21%~0.27%
demonstrating that runoff was the main way of inorganic nitrogen loss in the paddy field in this study. The fertilization treatments of CT
BS and CB increased rice yield by 18.3%
28.4%
and 24.9%
respectively (p < 0.05). In summary
the application of carbon-based fertilizer and organic fertilizer could significantly reduce the nitrogen loss in the paddy field.
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