Response of Agronomic Traits and Phosphorus Uptake to Soil P Deficiency During Rice Cultivars Improvement

Agronomy, Год журнала: 2025, Номер 15(4), С. 983 - 983

Опубликована: Апрель 19, 2025

Developing high phosphorus (P) efficient rice varieties is essential for sustainable phosphate resource conservation. This study evaluated 16 cultivars from four breeding eras: ancient (<1940), early conventional (1940–2000), modern (2000–2020), and hybrid (2000–2020). Using pot experiments in low-P soil, we examined two P treatments: P0 (no application, simulating stress) P50 (50 kg hm−1 normal input). We systematically compared agronomic traits, distribution patterns, uptake efficiency across generations. The result showed that significantly increased root biomass, shoot grain yield while reducing plant height. Low-P stress (P0) had minimal impact on growth traits but negatively affected uptake, particularly content accumulation patterns. Under treatment, maintained a higher stem concentration (0.47–0.65 g·kg−1 vs. 0.27–0.49 varieties; 0.47–0.65 0.18–0.28 varieties, p < 0.05). allocation strategies varied eras. Root ratios decreased to the highest storage (24.1–30.5%), allocated largest partition of 76.4–78.1% grains. Additionally, fertilizer productivity by 131.09% 91.21% (p 0.01) rice, with hybrids exhibiting values both parameters. Principal component analysis (PCA) revealed distinct trait clusters separating ancient, conventional, based rhizosphere soil Random forest identified that, under conditions, was strongest predictor yield, whereas pH relationship yield. These findings demonstrate has enhanced adaptation through optimized architecture organ-specific strategies, which providing valuable insights developing future P-efficient varieties.

Язык: Английский

Leaching of dissolved phosphorus and carbon and phosphorus fractionation in drainage: effects of soil type, chemical characteristics and amendments

Journal of Soils and Sediments, Год журнала: 2025, Номер unknown

Опубликована: Май 24, 2025

Язык: Английский

Study on the dynamics of phosphorus adsorption and the risk of release in black soils by conservation tillage

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Май 26, 2025

In this experiment, the adsorption characteristics and release risk of phosphorus from three types soils-namely no-tillage with straw off field (CK), crushed mulched (FS), high-stubble (GH), were investigated using a batch experimental method. The data showed that was divided into stages reached equilibrium at 480 min. Compared CK, FS GH treatments reduced by 14.68% 24.63%, respectively. highest occurred pH 7, soil gradually decreased increasing nitrogen concentration. Correlation analysis physicochemical properties maximum (Qmax) significantly negatively correlated available (AN) positively value. environmental index (ERI) followed order to > interactions contributing 87.13% adsorption. Comprehensive concluded return soil's capacity, enhanced availability, but increased release. Appropriately reducing fertilizer application can enhance

Язык: Английский