中国农学通报2026，Vol.42Issue(14)：57-62,6.
控释尿素配施秸秆生物炭对水稻产量和氮素利用率的影响
Effects of Controlled-release Urea Combined with Straw Biochar on Rice Yield and Nitrogen Utilization Efficiency
摘要
Abstract
To investigate the effects of straw biochar combined with controlled-release urea on rice yield and nitrogen use efficiency,a two-year field experiment was conducted using indica-japonica hybrid rice variety'Yongyou 15'as test material and polymer-coated urea.The experiment employed a randomized complete block design to examine rice yield,nitrogen uptake,and nitrogen use efficiency under two biochar-based treatments:biochar with conventional urea,and biochar with polymer-coated urea.The results showed that,compared with conventional urea applied at full nitrogen rate,a single application of polymer-coated urea with 20%nitrogen reduction maintained stable rice yield and significantly increased nitrogen recovery efficiency(>50%).Compared with conventional urea alone,biochar combined with conventional urea significantly reduced rice yield in the first year,but no significant difference was observed between the two treatments in the second year.Meanwhile,biochar combined with polymer-coated urea did not compromise the positive effect of polymer-coated urea.All controlled-release urea treatments significantly increased nitrogen content in various rice plant parts and enhanced nitrogen recovery efficiency.This study provides a theoretical basis and scientific reference for developing efficient nitrogen fertilization strategies for indica-japonica hybrid rice.关键词
秸秆生物炭/籼粳杂交稻/包膜尿素/氮素利用率/产量Key words
straw biochar/indica-japonica hybrid rice/coated urea/nitrogen use efficiency/yield分类
农业科技引用本文复制引用
杨锌,叶水烽..控释尿素配施秸秆生物炭对水稻产量和氮素利用率的影响[J].中国农学通报,2026,42(14):57-62,6.基金项目
国家自然科学基金"秸秆生物炭与包膜尿素联合施用对超级稻氮素利用效率及稻田氨挥发的互作效应研究"(32560781) （32560781）
江西省教育厅科学技术研究项目"长期施用生物炭对稻田土壤团聚体稳定性和土壤微生物群落的影响"(GJJ211726). （GJJ211726）
