Improving the yield and nitrogen use efficiency of hybrid rice through rational use of controlled-release nitrogen fertilizer and urea topdressing.

ABSTRACT:

Introduction

Controlled-release fertilizers effectively improve crop yield and nitrogen use efficiency (NUE). However, their use increases the cost of crop production. Optimal management modes involving urea replacement with controlled-release N fertilizers to increase rice yield through enhanced NUE are not widely explored.

Methods

Field experiments were conducted from 2017 to 2018 to determine the effects of different controlled-release N fertilizers combined with urea [urea-N (180 kg ha^-1, N₁)]. We used controlled-release N (150 kg ha^-1, N₂) as the base, and four controlled-release N and urea-N ratio treatments [(80%:0% (N₃), 60%:20% (N₄), 40%:40% (N₅), or 20%:60% (N₆) as the base with

SUBMITTER: Sun Y 

PROVIDER: S-EPMC10484103 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature