Comparison of carbon footprint and net ecosystem carbon budget under organic material retention combined with reduced mineral fertilizer.

ABSTRACT:

Background

Excessive application of chemical fertilizer has resulted in lower nitrogen uptake and utilization efficiency of crops, decreasing soil fertility, increasing greenhouse gas emissions, and worse environmental pollution. Organic material retention is regard as the key to solve these problems. The objective of this study is to conduct an assessment of carbon budget under Astragalus sinicus L. and rice straw retention combined with reduced mineral fertilizer based on the 2-year field experiment in a paddy field in the south of China. The experiment was randomized complete block design including four treatments with triplicates: control CK (winter follow, 120 kg ha^-1 N fertilizer for each rice season) and three treatments with Astragalus sinicus L. and rice straw r

SUBMITTER: Liu Y 

PROVIDER: S-EPMC7923666 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature