The split injection of water-soluble fertilizers effectively reduces N2O, CH4 and NH3 emissions while simultaneously improving rice yield and harvest index
文献类型： 外文期刊
作者： Yao, Yuanlin 1 ; Zeng, Ke 2 ; Deji, Zhuoma 1 ; Zhao, Zejing 1 ; Wang, Haitao 3 ;
作者机构： 1.Nanjing Univ Informat Sci & Technol, Sch Ecol & Appl Meteorol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Peoples R China
2.Guangdong Acad Agr Sci, Inst Agr resources & Environm, 66 Jinying Rd, Guangzhou 510640, Peoples R China
3.Univ Goettingen, Dept Crop Sci, Div Plant Nutr & Crop Physiol, D-37075 Gottingen, Germany
关键词： Greenhouse gas emission; Harvest index; NH3 volatilization; Fertilizer injection; Water-soluble fertilizer; Rice yield
期刊名称：FIELD CROPS RESEARCH （ 影响因子：6.4； 五年影响因子：6.6 ）
ISSN： 0378-4290
年卷期： 2024 年 319 卷
页码：
收录情况： SCI
摘要： Mitigating environmental impacts while enhancing grain yield is essential for sustainable rice production. Onetime urea deep placement (UDP) has been recognized for its potential to reduce nitrogen (N) loss and improve rice yield. However, this method applies an excessive amount of nitrogen as a basal fertilizer, which increases N2O emissions during the mid-season aeration (MSA) phase and promotes straw biomass over grain yield, consequently reducing the harvest index (HI). The split injection of water-soluble fertilizers (IF) could present a viable alternative solution. Nevertheless, no studies have yet investigated the environmental and agronomic effects of IF in rice production fields. Therefore, a three-year field experiment was conducted with six treatments: three-split urea broadcasting (BU), one-time UDP (UDP(10:0)), one-time IF (IF(10:0)), two-split IF with a 6:4 ratio (IF(6:4)), two-split IF with a 5:5 ratio (IF(5:5)), and a control without N (CK) in an intensive rice cropping system in China. Results showed that one-time UDP produced the lowest HI and increased N2O emissions by 146 % compared to BU, due to surplus N provision until the MSA stage. In contrast, two-split IF treatments increased straw biomass by 7 %-9 % while improving rice yield by 13 %-14 % compared to BU and resulting in the highest HI, due to the reduced injection dosage of basal fertilizer and sufficient spike fertilizer injection, which in turn avoided surplus N at the MSA stage, thus decreasing total N2O emissions by 15 %-28 % compared to BU. All deep fertilization treatments reduced CH4 emissions by 43 %-67 % compared to BU. All IF treatments produced the parallel highest net economic benefit (NEB) of all treatments. Moreover, IF(6:4) reduced greenhouse gas intensity (GHGI) by 56% compared to BU, and completely eliminated NH3 volatilization. In conclusion, a two-split IF with a basal and spike fertilizer ratio of 6:4 is a promising strategy for reducing GHGI and NH3 emissions while simultaneously improving rice yield, HI and NEB in paddy rice fields. Expanding split IF technology will greatly contribute to the green development of rice production.
- 相关文献
作者其他论文 更多>>
-
The miR-184-3p promotes rice black-streaked dwarf virus infection by suppressing Ken in Laodelphax striatellus (Fallén)
作者：Wu, Wei;Wang, Man;Deng, Zhiting;Xi, Minmin;Dong, Yan;Wang, Haitao;Zhang, Jianhua;Zhou, Yijun;Xu, Qiufang;Wu, Wei;Deng, Zhiting;Xi, Minmin;Wang, Changchun;Xu, Qiufang
关键词：miR-184-3p; Laodelphax striatellus; rice black-streaked dwarf virus; Ken; virus infection
-
MicroRNA750-3p Targets Processing of Precursor 7 to Suppress Rice Black-Streaked Dwarf Virus Propagation in Vector Laodelphax striatellus
作者：Wang, Haitao;Dong, Yan;Xu, Qiufang;Wang, Man;Li, Shuo;Ji, Yinghua
关键词：microRNA750-3p; processing of precursor 7; rice black-streaked dwarf virus; small brown planthopper; Laodelphax striatellus; viral propagation
-
The miR184-3p targets neuron-specific ecdysone inducible protein 78 to promote rice black streaked dwarf virus propagation in its planthopper vector
作者：Wang, Haitao;Dong, Yan;Wang, Man;Li, Shuo;Zhou, Yijun;Ji, Yinghua
关键词：miR184-3p; rice black streak dwarf virus; antiviral mechanism; central nervous system; ecdysone inducible protein 78; ecdysone receptor
-
Spatiotemporal evolution and driving factors of the coupling coordination between county land urbanization and grain production: the case of Jiangsu province, China
作者：Chen, Xi;Zhou, Junting;Xing, Lirong;Wang, Haitao;Lu, Jianzhen
关键词：land urbanization; grain production; coupling coordination degree (CCD); spatiotemporal evolution; space Durbin model (SDM); Jiangsu province
-
Identification and Characterization Analysis of Transient Receptor Potential Mucolipin Protein of Laodelphax striatellus Fallen
作者：Wang, Haitao;Dong, Yan;Ji, Yinghua;Xu, Qiufang;Wan, Baijie;Xu, Qiufang
关键词：Laodelphax striatellus; TRPML; expression profile; subcellular localization; lipid binding
-
Systematic Identification and Functional Analysis of Circular RNAs During Rice Black-Streaked Dwarf Virus Infection in theLaodelphax striatellus(Fallen) Midgut
作者：Zhang, Jianhua;Wang, Haitao;Wu, Wei;Dong, Yan;Wang, Man;Zhou, Yijun;Xu, Qiufang;Wang, Haitao;Dong, Yan;Wang, Man;Zhou, Yijun;Xu, Qiufang;Yi, Dianshan
关键词：circular RNA; RNA-Seq; rice black-streaked dwarf virus; Laodelphax striatellus; midgut; circRNA2030
-
A plant virus hijacks phosphatidylinositol-3,5-bisphosphate to escape autophagic degradation in its insect vector
作者：Wang, Haitao;Zhang, Jianhua;Liu, Haoqiu;Wang, Man;Dong, Yan;Zhou, Yijun;Xu, Qiufang;Liu, Haoqiu;Wong, Sek-Man;Liu, Haoqiu;Wong, Sek-Man;Xu, Kai;Xu, Qiufang;Zhang, Jianhua
关键词：Autophagy; lysosome-autophagosome fusion; PtdIns(3; 5)P-2; RBSDV; trpml
