Strategies for enhancing yield and quality of forage-grain dual-purpose ratoon rice: role of first-season density and nitrogen management.

ABSTRACT: The "forage-grain dual-purpose" model helps ease land-use competition and supports high-yield, high-quality rice production. However, integrated strategies to simultaneously improve silage rice and ratoon rice yield and quality across both seasons require further systematic study. A two-year field study (2022-2023) was conducted using two widely cultivated indica hybrid rice cultivars, F You 498 (FY498) and Chuankangyou Simiao (CKYSM), in Southwest China. Treatments included three planting densities (D1: 16.7 × 10⁴; D2: 20.8 × 10⁴; D3: 27.8 × 10⁴ hills ha^-1) and three nitrogen levels (N1: 150; N2: 225; N3: 300 kg ha^-1) in the first season. Results showed that: Silage yield increased significantly with higher density and nitrogen input.

SUBMITTER: Ouyang Y 

PROVIDER: S-EPMC12395572 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature