江苏农业学报2025，Vol.41Issue(8)：1508-1516,9.DOI:10.3969/j.issn.1000-4440.2025.08.007
氮肥配施生物炭对玉米与大豆间作模式作物干物质及氮养分积累特性的影响
Effects of combined application of nitrogen fertilizer and biochar on dry matter and nitrogen nutrient accumulation characteristics in maize-soybean intercropping patterns
摘要
Abstract
The study on the effects of combined application of nitrogen fertilizer and biochar on dry matter accumula-tion and nitrogen use efficiency in maize-soybean intercropping systems is of great practical significance for achieving high and stable yields in maize-soybean intercropping.This study designed three planting patterns:maize monoculture(M),soybean monoculture(S),and maize-soybean intercropping(I),combined with three application gradients of nitrogen fer-tilizer(165 kg/hm2,210 kg/hm2,255 kg/hm2)and three application gradients of biochar(2 t/hm2,4 t/hm2,6 t/hm2).An orthogonal experimental design was adopted to explore the optimal combination of nitrogen fertilizer and biochar application under different planting patterns and their effects on crop dry matter accumulation and nitrogen use efficiency.The results showed that among the nine treat-ments combining nitrogen fertilizer and biochar applica-tion,the IN3C2 combination(maize-soybean intercropping with a nitrogen fertilizer application rate of 255 kg/hm2 and a biochar application rate of 4 t/hm2)demonstrated superior performance,achieving a combined maize-soybean yield of 13 395 kg/hm2.The IN3C2 treatment effectively alleviated the negative effects of intercropping on dry matter accumulation and nitrogen accumulation in maize.Although the dry matter ac-cumulation in maize under intercropping mode was significantly lower than that under monoculture mode,the nitrogen accu-mulation per plant in maize was significantly increased by 42.42%compared with monoculture(P<0.05),highlighting the advantage of nitrogen absorption capacity.In conclusion,the combined application of nitrogen fertilizer and biochar can pro-mote nitrogen accumulation in intercropped maize plants,improve nitrogen use efficiency,and achieve the goal of nitrogen reduction and efficiency enhancement.关键词
玉米/大豆/间作/氮肥/生物炭/产量Key words
maize/soybean/intercropping/nitrogen fertilizer/biochar/yield分类
农业科技引用本文复制引用
崔文芳,秦德志,陈静,刘剑,王彦平,秦丽..氮肥配施生物炭对玉米与大豆间作模式作物干物质及氮养分积累特性的影响[J].江苏农业学报,2025,41(8):1508-1516,9.基金项目
国家自然科学基金项目(32160506) （32160506）
内蒙古自治区高等学校碳达峰碳中和研究专项(STZX201314) （STZX201314）
