Effect of the Slow-Release Nitrogen Fertilizer Oxamide on Ammonia Volatilization and Nitrogen Use Efficiency in Paddy Soil

Tang, Ying; Li, Xun; Shen, Wenzhong; Duan, Zengqiang

doi:10.3390/agronomy8040053

Cited by 11 publications

(5 citation statements)

References 32 publications

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“…On the contrary, one-time deep application of a reduced amount of slow-release fertilizer treatment (LSR) ensured that the yield was basically the same as in the case of N fertilizer adequate application. These findings are consistent with previous studies [30,31].…”

Section: Cooking Qualitysupporting

confidence: 94%

Effects of a Novel Weeding and Fertilization Scheme on Yield and Quality of Rice

Shi,

Cheng,

et al. 2023

Agronomy

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This study aimed to assess the feasibility of a novel weeding and fertilization scheme, namely, mechanical weeding plus a one-time deep application of a reduced amount of slow-release fertilizer for rice cultivation. The effects of the weeding and fertilization method on rice yield and quality were investigated using a split plot test as the research method. Two weeding methods, namely, chemical weeding (CW) and mechanical weeding (MW), and four fertilization methods were tested, including the conventional fertilization method (quantitative split broadcast application of fast-release N fertilizer (CK)), the quantitative split broadcast application of 80% fast-release N fertilizer (LCK), the one-time base application of slow-release fertilizer (SR), and the one-time deep application of 80% slow-release fertilizer (LSR). The results showed that the rice yield under MW with LSR treatment can maintain a high level—higher than 9.2 t ha−1 per year. This was attributed to the slow-release fertilizer and deep fertilization, which increased the number of stems and tillers in the pre-fertility and spike rate, respectively, resulting in a high panicle number with a 20% reduction of N fertilizer. Furthermore, mechanical weeding improved the seed-setting rate, resulting in a higher number of grains per panicle, a higher panicle number, and an increased thousand-grain weight, thereby maintaining a high yield. At the same time, the quality of rice under MW with LSR treatment improved, specifically reflected in the significant improvement of the processing and appearance quality of rice, a slight increase in protein content, and a reduction in the amylose content, thereby improving its nutritional quality while maintaining good cooking quality.

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Section: Cooking Qualitysupporting

confidence: 94%

Effects of a Novel Weeding and Fertilization Scheme on Yield and Quality of Rice

Shi,

Cheng,

et al. 2023

Agronomy

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“…Spatial clustering analysis was based on NDVI values [60]. We calculated the Local Moran's I index associated with the NDVI values of each pixel [62][63][64][65][66] using the following formula:…”

Section: Interpretation and Processing Of Remote Sensing Datamentioning

confidence: 99%

Identifying the Relationship between Soil Properties and Rice Growth for Improving Consolidated Land in the Yangtze River Delta, China

et al. 2018

Sustainability

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China has widely implemented land consolidation, which was expected to increase the amount of cultivated land and enhance grain yields. Key components of land consolidation include filling mall waterbodies and leveling land, both of which have strong impacts on the environment in the Yangtze River Delta. The impacts of land consolidation on soil ecology and agricultural production are not yet clear. Here, we conducted a field survey of soil properties and rice growth to detect the effects of land consolidation in the first growing season. The normalized difference vegetation index (NDVI) was used to analyze the remote sensing data. We found significant differences in the soil properties under different types of land leveling, with a general NDVI pattern of: control > borrowed topsoil area > filled waterbodies area > topsoil cutting area. We found significant heterogeneity in rice NDVI after land consolidation. The NDVI of rice had extremely significant positive correlations with soil organic matter and available zinc. The spatial variation in soil properties caused by land consolidation was a dominant factor leading to the heterogeneity of rice NDVI. Fertilizing soil and strengthening field management should be adopted to provide more ecological services while increasing quantity.

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“…Moreover, an obvious shortcoming of current rotation systems is the highly increasing demand for rural laborers (Hu et al., 2017). The deficiency and high costs of rural laborers limit the rapid development of rice–upland rotations (Tang et al., 2018). Consequently, the rice–rapeseed rotation system is interrelated with food security, greenhouse gas (GHG) emissions and non‐point source pollution issues, and economic costs.…”

Section: Introductionmentioning

confidence: 99%

One‐time N fertilization reduces greenhouse emissions and N leaching while maintaining high yields in a rape–rice rotation system

et al. 2022

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In China, the rice (Oryza sativa L.)–rapeseed (Brassica napus L.) rotation system is facing great challenges, including constantly growing demand, on‐going labor shortages, and increasing environmental burdens. Thus, producing more food and higher benefits while minimizing environmental costs is required for future development. A 2‐yr field experiment comparing three nitrogen (N) fertilization treatments (non‐N treatment as control [CK], conventional urea application [CU], one‐time application of controlled‐release urea [CRU]) was performed. Results showed that the rice season dominated annual CH4 emissions (>95%) and on average contributed more than 50% of the annual N2O emissions. Additionally, the main forms of mineral N leaching were different for rape and rice. Nitrate (NO3–)–N was the major component of leaching in rape season, while for rice season NO3––N and NH4+–N were equal. Relative to CU, CRU significantly increased the rapeseed yield by 10.7∼13.9% and maintained the rice productivity, reduced mineral N leaching losses by 19.6∼20.8% for the rice season, and resulted in less total methane (CH4) and nitrous oxide (N2O) emissions (TGHGs) by 12.1% across the two rotations. Furthermore, a net economic benefit (NEB) considering yields, fertilizer input, labor, and other input costs indicated CRU increased the economic return by 58.3%. However, CRU did not improve partial factor productivity of nitrogen fertilizer (PFPN) and decreased the NEB by 3.1% without considering the labor cost. It indicated a one‐time application of the CRU for rice–rapeseed rotation system was an environmentally and economically profitable technology. This paper provided a promising solution for farmers to enhance rice–rapeseed productivity and increase income while minimizing the environmental footprint.

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Effect of the Slow-Release Nitrogen Fertilizer Oxamide on Ammonia Volatilization and Nitrogen Use Efficiency in Paddy Soil

Cited by 11 publications

References 32 publications

Effects of a Novel Weeding and Fertilization Scheme on Yield and Quality of Rice

Effects of a Novel Weeding and Fertilization Scheme on Yield and Quality of Rice

Identifying the Relationship between Soil Properties and Rice Growth for Improving Consolidated Land in the Yangtze River Delta, China

One‐time N fertilization reduces greenhouse emissions and N leaching while maintaining high yields in a rape–rice rotation system

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