질소비료의 심층시비에 의한 논과 밭 토양의 암모니아 배출 억제 효과
Reducing the Effect of Ammonia Emissions from Paddy and Upland Soil with Deep Placement of Nitrogen Fertilizers
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BACKGROUND: Ammonia gas emitted from nitrogen fertilizers applied in agricultural land is an environmental pollutant that catalyzes the formation of fine particulate matter (PM2.5). A significant portion (12-18%) of nitrogen fertilizer input for crop cultivation is emitted to the atmosphere as ammonia gas, a loss form of nitrogen fertilizer in agricultural land. The widely practiced method for fertilizer use in agricultural fields involves spraying the fertilizers on the surface of farmlands and mixing those with the soils through such means as rotary work. To test the potential reduction of ammonia emission by nitrogen fertilizers from the soil surface, we have added N, P, and K at 2 g each to the glass greenhouse soil, and the ammonia emission was analyzed. METHODS AND RESULTS: The treatment consisted of non-fertilization, surface spray (conventional fertilization), and soil depth spray at 10, 15, 20, 25, and 30 cm. Ammonia was collected using a self-manufactured vertical wind tunnel chamber, and it was quantified by the indophenol-blue method. As a result of analyzing ammonia emission after fertilizer treatments by soil depth, ammonia was emitted by the surface spray treatment immediately after spraying the fertilizer in the paddy soil, with no ammonia emission occurring at a soil depth of 10 cm to 30 cm. In the upland soil, ammonia was emitted by the surface spray treatment after 2 days of treatment, and there was no ammonia emission at a soil depth of 15 cm to 30 cm. Lettuce and Chinese cabbage treated with fertilizer at depths of 20 cm and 30 cm showed increases of fresh weight and nutrient and potassium contents. CONCLUSION(S): In conclusion, rather than the current fertilization method of spraying and mixing the fertilizers on the soil surface, deep placement of the nitrogen fertilizer in the soil at 10 cm or more in paddy fields and 15 cm or more in upland fields was considered as a better fertilization method to reduce ammonia emission.
Abstract
BACKGROUND: Ammonia gas emitted from nitrogen fertilizers applied in agricultural land is an environmental pollutant that catalyzes the formation of fine particulate matter (PM2.5). A significant portion (12-18%) of nitrogen fertilizer input for crop cultivation is emitted to the atmosphere as ammonia gas, a loss form of nitrogen fertilizer in agricultural land. The widely practiced method for fertilizer use in agricultural fields involves spraying the fertilizers on the surface of farmlands and mixing those with the soils through such means as rotary work. To test the potential reduction of ammonia emission by nitrogen fertilizers from the soil surface, we have added N, P, and K at 2 g each to the glass greenhouse soil, and the ammonia emission was analyzed. METHODS AND RESULTS: The treatment consisted of non-fertilization, surface spray (conventional fertilization), and soil depth spray at 10, 15, 20, 25, and 30 cm. Ammonia was collected using a self-manufactured vertical wind tunnel chamber, and it was quantified by the indophenol-blue method. As a result of analyzing ammonia emission after fertilizer treatments by soil depth, ammonia was emitted by the surface spray treatment immediately after spraying the fertilizer in the paddy soil, with no ammonia emission occurring at a soil depth of 10 cm to 30 cm. In the upland soil, ammonia was emitted by the surface spray treatment after 2 days of treatment, and there was no ammonia emission at a soil depth of 15 cm to 30 cm. Lettuce and Chinese cabbage treated with fertilizer at depths of 20 cm and 30 cm showed increases of fresh weight and nutrient and potassium contents. CONCLUSION(S): In conclusion, rather than the current fertilization method of spraying and mixing the fertilizers on the soil surface, deep placement of the nitrogen fertilizer in the soil at 10 cm or more in paddy fields and 15 cm or more in upland fields was considered as a better fertilization method to reduce ammonia emission.
참고문헌 (8)
- Hongyuan Wang, "Ammonia emissions from paddy fields are underestimated in China", Environmental Pollution, 235, pp.482~488 (2018), Elsevier BV[DOI]
- 정구복, "Input and Output Budgets for Nitrogen of Paddy Field in South Korea", 한국토양비료학회지(Korean Journal of Soil Science and Fertilizer), 49(1), pp.60~65 (2016), 한국토양비료학회[DOI]
- 홍성창, "시설잎들깨 재배의 퇴비 시용에 의한 암모니아 배출량", 한국환경농학회지, 40(3), pp.149~160 (2021), 한국환경농학회[DOI]
- Yuanlin Yao, "Urea deep placement for minimizing NH3 loss in an intensive rice cropping system", Field Crops Research, 218, pp.254~266 (2018), Elsevier BV[DOI]
- Peng Wu, "Suitable fertilizer application depth can increase nitrogen use efficiency and maize yield by reducing gaseous nitrogen losses", Science of The Total Environment, 781, pp.146787~ (2021), Elsevier BV[DOI]
- Zhu C, "Effects of mechanized deep placement of nitrogen fertilizer rate and type on rice yield and nitrogen use efficiency in Chuanxi Plain, China", Journal of Integrative Agriculture, 20(2), pp.581~592 (2021)[DOI]
- Conghua Zhu, "Mechanized transplanting with side deep fertilization increases yield and nitrogen use efficiency of rice in Eastern China", Scientific Reports, 9(1), pp.1~13 (2019), Springer Science and Business Media LLC[DOI]
- Li L, "Roles of nitrogen deep placement on grain yield, nitrogen use efficiency, and antioxidant enzyme activities in mechanical pot"seedling transplanting rice", Agronomy, 10(9), pp.1252~ (2020)[DOI]