ArticleFrontiers in plant science2025
Side deep placement of slow-release N as base fertilizer combined with urea as panicle fertilizer increases rice yield by optimizing dry matter and N accumulation and translocation.
Article in Frontiers in plant science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Synergistic Enhancement of Rice Yield and Quality by Combined Slow-Release Fertilizer and Urea Under Straw Incorporation Through Optimized Grain Filling and Starch Biosynthesis.Plants (Basel, Switzerland) · 2026Article
- Effects of Slow-Release Fertilizer on Growth, Yield, and Quality ofPlants (Basel, Switzerland) · 2026Article
- Remote evaluation of rice nitrogen utilization efficiency using chlorophyll-related spectral indices derived from unmanned aerial vehicle imagery.Frontiers in plant science · 2026Article
- Effects of deep slow-release fertilizer on melon yield, economic benefits and rhizosphere microorganisms.Frontiers in plant science · 2026Article
- Side-deep slow-release nitrogen fertilization combined with panicle-stage urea topdressing improves energy efficiency, reduces carbon footprint, and enhances economic performance in rice systems.Frontiers in plant science · 2026Article
- High Ratoon Season Rice Yield is Achieved Through Optimized Variety, Nitrogen Management and Temperature-Solar Radiation Resources.Rice (New York, N.Y.) · 2025Article
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Abstract
Introduction: Side deep fertilization (SDF) technology and slow release N fertilizer offer advantages in enhancing rice yield and N use efficiency. However, the effects of side deep application of slow-release N as base fertilizer, combined with the application of urea at different growth stages, on dry matter accumulation, N uptake, translocation, assimilation, and yield formation in rice remain unclear. Methods: Therefore, in 2023 and 2024, a field experiment was conducted in Sichuan, China, using the local variety Chuankangyou 6308. Seven N treatments were established: no N (0N), conventional fertilization control (CK), 100% urea side deep placement (DU), 100% slow-release N fertilizer side deep placement (DSU), and DSU combined with 30% urea applied as basal fertilizer (DSU+U), tillering fertilizer (DSU+TU), or panicle fertilizer (DSU+PU). Results: The results showed that compared with CK, slow-release N fertilizer treatments significantly increased yield by 10.04%~23.28%, with DSU+PU having the highest yield, due to a higher number of effective panicles and seed-setting rate. DSU+PU is beneficial for increasing SPAD value and plant height, significantly increased total dry matter and N accumulation by 24.36% and 34.76%, respectively. The contribution rates of stem and leaf dry matter and N to yield increased by 9.67% and 4.40%, as well as 6.63% and 7.27%, respectively. Nitrate reductase (NR) and glutamine synthetase (GS) activities significantly increased by 4.88% and 6.86%, respectively. Notably, DSU+PU significantly improved N agronomic efficiency (NAE) and N fertilizer partial factor productivity (NPFP) by 89.00% and 23.27%, respectively. Meanwhile, DSU+PU reduced one fertilization application compared with CK and lowered N fertilizer costs compared with DSU. Discussion: In conclusion, side deep placement of slow-release N as base fertilizer combined with urea as panicle fertilizer can delay leaf senescence, increase plant height and N metabolism enzyme activity, optimize dry matter and N accumulation and distribution, and significantly increase yield, and N use efficiency. It provides a solution for developing a simplified and efficient rice fertilization technology system based on the integration of agricultural machinery and agronomy.
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