Urease Inhibitor N-(n-butyl) Thiophosphoric Triamide (NBPT) Application as a Mitigating Strategy of Ammonia Volatilization from Different Loess Soils of China

IF 3.4 3区 农林科学 Q2 ENVIRONMENTAL SCIENCES
Muneer Ahmed, Sajjad Raza, Ahmed Salah Elrys, Ming Lei, Zhujun Chen, Jianbin Zhou
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Abstract

Purpose

The use of urease inhibitors (UIs) has been proposed to reduce nitrogen (N) losses, including ammonia (NH3) volatilization from N fertilizers applied soils. However, the effects of soil properties on UIs efficiency for mitigating NH3 emissions remains less clear.

Methods

An incubation study was conducted, to evaluate the efficiency of urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) on NH3 volatilization. The soils were used from six different counties (Zhouzhi, Yangling, Changwu, Luochuan, Ansai and Shenmu) of the Loess Plateau, China characterized different soil properties. The treatments were control (no N), urea (0.2 g N kg− 1 soil) and urea + 0.5% NBPT.

Results

The cumulative NH3 volatilization loss in urea applied six different soils were 42.8–56.1 mg kg− 1 (21.4–28.1% of N applied). The NH3 emission rate rapidly increased in Shenmu, Ansai and Luochuan soils and recorded highest (28.1, 27.1 and 25.8% of N applied), probably due to more sand particles and higher soil pH. In contrast, Zhouzhi, Changwu and Yangling soils showed gradual increase in NH3 emission rate and recorded lowest (21.4, 21.5 and 23.2% of N applied), might be due to more clay particles and low soil pH. Urea + 0.5% NBPT delayed urea hydrolysis and significantly reduced NH3-N loss by 47.1–55.5% in different soils. The soil texture, pH, urease activity (UA), calcium carbonate (CaCO3) and organic matter content were the main soil factors affected the rate of NH3 volatilization and NBPT effectiveness.

Conclusion

This study validated that NBPT application has immense potential in mitigating NH3 volatilization from different soils.

Abstract Image

应用脲酶抑制剂 N-(正丁基)硫代磷酸三酰胺 (NBPT) 作为缓解中国不同黄土中氨挥发的策略
目的有人建议使用脲酶抑制剂(UIs)来减少氮(N)的损失,包括施用氮肥的土壤中氨(NH3)的挥发。方法进行了一项培养研究,以评估脲酶抑制剂 N-(正丁基)硫代磷酸三酰胺(NBPT)对 NH3 挥发的影响。土壤来自中国黄土高原的六个不同县(周至、杨凌、长武、洛川、安塞和神木),具有不同的土壤特性。施用尿素的六种不同土壤中,NH3 的累积挥发损失为 42.8-56.1 mg kg-1(占施用量的 21.4-28.1%)。神木、安塞和洛川土壤的 NH3 排放率迅速增加,最高(分别为施氮量的 28.1、27.1 和 25.8%),这可能是由于砂粒较多和土壤 pH 值较高所致。相比之下,周至、长武和杨凌土壤的 NH3 排放率逐渐增加,最低(分别为施氮量的 21.4%、21.5% 和 23.2%),这可能是由于粘粒较多和土壤 pH 值较低所致。尿素 + 0.5% NBPT 可延缓尿素水解,在不同土壤中可显著减少 47.1-55.5% 的 NH3-N 损失。土壤质地、pH 值、脲酶活性(UA)、碳酸钙(CaCO3)和有机质含量是影响 NH3 挥发率和 NBPT 效果的主要土壤因素。
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来源期刊
Journal of Soil Science and Plant Nutrition
Journal of Soil Science and Plant Nutrition Agricultural and Biological Sciences-Soil Science
CiteScore
5.90
自引率
10.30%
发文量
331
审稿时长
9 months
期刊介绍: The Journal of Soil Science and Plant Nutrition is an international, peer reviewed journal devoted to publishing original research findings in the areas of soil science, plant nutrition, agriculture and environmental science. Soil sciences submissions may cover physics, chemistry, biology, microbiology, mineralogy, ecology, pedology, soil classification and amelioration. Plant nutrition and agriculture submissions may include plant production, physiology and metabolism of plants, plant ecology, diversity and sustainability of agricultural systems, organic and inorganic fertilization in relation to their impact on yields, quality of plants and ecological systems, and agroecosystems studies. Submissions covering soil degradation, environmental pollution, nature conservation, and environmental protection are also welcome. The journal considers for publication original research articles, technical notes, short communication, and reviews (both voluntary and by invitation), and letters to the editor.
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