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| 海藻酸稳定性尿素施用对华南双季稻产量、氮素利用和经济效益的影响 |
| Effects of alginate-stabilized urea application on yields，nitrogen utilizations and economic benefits of double-cropping rice in South China |
| Received:April 20, 2025 |
| DOI：10.13254/j.jare.2025.0383 |
| 中文关键词: 海藻酸稳定性尿素，产量，氮肥利用率，土壤矿质氮，经济效益，双季稻 |
| 英文关键词: alginate-stabilized urea, yield, nitrogen utilization rate, soil mineral nitrogen, economic benefit, double-cropping rice |
| 基金项目:广东省重点领域研发计划项目（2023B0202080002，2023B0202010027）；广州市科技计划项目（202201011513） |
| Author Name | Affiliation | E-mail | | Lü Haili | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | | | CHEN Haibin | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | | | LI Huang | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | | | PAN Xiaoying | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | | | DU Jianjun | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | | | HUANG Bangyu | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | yhr28@126.com | | ZHANG Jing | College of Resources and Environment, Zhongkai University of Agriculture and Engineering/Engineering and Technology Research Center for Agricultural Land Pollution Integrated Prevention and Control of Guangdong Higher Education Institute, Guangzhou 510225, China | zhangjing201306@sina.com |
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| 中文摘要: |
| 为研究海藻酸稳定性尿素一次性基施对华南地区双季稻产量、氮素利用以及经济效益的影响，本研究于2023年8月—2024年7月在广东省佛山市开展田间试验，设置不施氮肥（CK）、相同施氮量下的常规尿素（U）、海藻酸包膜尿素（AU）、脲酶抑制剂-海藻酸包膜尿素（UIAU）、硝化抑制剂-海藻酸包膜尿素（NIAU）和脲酶抑制剂-硝化抑制剂-海藻酸包膜尿素（UINIAU）6个处理。结果表明：AU、UIAU、NIAU和UINIAU处理的产量在5.09~6.21 t·hm-2之间，氮素表观利用率、农学效率、生理利用率和偏生产力分别在13.01%~41.60%、7.16~17.71、20.42~59.61 kg·kg-1和37.62~48.68 kg·kg-1之间，与U处理相比均无显著差异。U处理晚稻和早稻的土壤平均矿质氮含量（NH4++NO3-）分别为9.99 mg·kg-1和10.89 mg·kg-1，与U处理相比，AU、UIAU、NIAU和UINIAU处理晚稻提高了15.84%~46.92%，早稻提高了14.67%~30.91%（P<0.05）。AU、UIAU、NIAU和UINIAU处理表现为氮素盈余，两个生长季UIAU和UINIAU处理氮素盈余较U处理均降低。在净收益方面，UIAU处理晚稻和早稻的净收益分别比U处理增加了2 417元·hm-2和1 288元·hm-2。通过主成分分析方法综合产量、氮素利用和经济效益等指标进行评价，华南地区双季稻生产推荐施用脲酶抑制剂-海藻酸包膜尿素。 |
| 英文摘要: |
| To investigate the effects of one-time applying alginate-stabilized urea as basal fertilizer on the yields, nitrogen utilization and economic benefits of double cropping rice in South China, we performed an experiment at a typical double-cropping paddy field in Foshan City, Guangdong Province from August, 2023 to July, 2024. Six treatments were set as：no nitrogen application treatment（CK）, the same nitrogen fertilizer application rates for conventional urea application（U）, alginate coated urea（AU）, urease inhibitor-alginate coated urea （UIAU）, nitrification inhibitor-alginate coated urea（NIAU）, and urease inhibitor-nitrification inhibitor-alginate coated urea（UINIAU） treatment. Results showed that the yields of AU, UIAU, NIAU and UINIAU treatments ranged from 5.09 to 6.21 t·hm-2, nitrogen apparent recovery efficiency, agronomic use efficiency, physiological efficiency, partial factor productivity of AU, UIAU, NIAU and UINIAU treatments were 13.01%-41.60%, 7.16-17.71, 20.42-59.61 kg·kg-1 and 37.62-48.68 kg·kg-1, respectively. They were not significantly different from those of U treatment. Mean soil mineral nitrogen contents（NH4++NO3-）of U treatment were 9.99 mg·kg-1 and 10.89 mg·kg-1 in late and early rice growing season. Compared with U treatment, AU, UIAU, NIAU and UINIAU treatments increased by 15.84%-46.92% and 14.67%-30.91%（P<0.05）. The nitrogen apparent balances of AU, UIAU, NIAU and UINIAU treatments were in a surplus state, which of UIAU and UINIAU were declined compared with U treatment for both seasons. UIAU treatment added the net returns by 2 417 yuan·hm-2 and 1 288 yuan·hm-2 in double cropping rice compared with U treatment. Yields, nitrogen utilizations, and economic indexes were integrated considered in principal component analysis, and the rank suggested applying urease inhibitor-alginate coated urea for double-cropping rice in South China. |
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