Sugarcane/Soybean Intercropping with Reduced Nitrogen Application Synergistically Increases Plant Carbon Fixation and Soil Organic Carbon Sequestration.

ABSTRACT: Sugarcane/soybean intercropping and reduced nitrogen (N) application as an important sustainable agricultural pattern can increase crop primary productivity and improve soil ecological functions, thereby affecting soil organic carbon (SOC) input and turnover. To explore the potential mechanism of sugarcane/soybean intercropping affecting SOC sequestration, a two-factor long-term field experiment was carried out, which included planting pattern (sugarcane monocropping (MS), sugarcane/soybean 1:1 intercropping (SB1), and sugarcane/soybean 1:2 intercropping (SB2)) and nitrogen addition levels (reduced N application (N1: 300 kg·hm^-2) and conventional N application (N2: 525 kg·hm^-2)). The results showed that the shoot and root C fixation in the sugarcane/soybean intercropp

SUBMITTER: Zhang T 

PROVIDER: S-EPMC11359578 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature