中国农学通报2025，Vol.41Issue(13)：13-18,6.
生物炭与尿素配施对旱地紫色土土壤养分、呼吸和油菜产量的影响
Effects of Combined Application of Biochar and Urea on Soil Nutrient,Respiration and Rape Yield in Dryland Purple Soil
摘要
Abstract
In order to preliminarily clarify the application effects of biochar and different urea,providing theoretical basis for the rational application of biochar and urea in purple soil in southwestern arid areas,this paper explores the effects of biochar combined with different urea on soil nutrient,soil respiration,and rapeseed yield.Taking purple soil in arid land as the research object,three kinds of urea,including common urea(UR),slow release urea(RU)and 60%common urea+40%slow release urea(40%RU)were set,and biochar with mass fraction of 0%(C0)and 2%(C1)was added in each pot respectively.The soil nutrient content,soil respiration and rape yield were measured after 233 days.The results indicated that soils nutrient status was significantly improved by the addition of biochar on different urea,with the best treatment being 40%RUC1.Compared with 40%RUC0,the organic matter content,total N,K and alkeline-N in 40%RUC1 were significantly increased by 9.31 g/kg,0.08 g/kg,0.19 g/kg and 4.43 mg/kg respectively.Compared with urea,biochar was the main effect factor of soil respiration.After adding biochar under the three urea treatments,the soil carbon flux was increased in each growth period,and the increase of RU was the smallest,while the average soil carbon flux during the growing period of 40%RU was lowest.The number of effective pods,number of grains per pod,thousand-seed weight and yield were increased under the combination of biochar with UR and 40%RU,and 40%RUC1 was the best treatment,while the yield factors and yield of rapeseed under the combination of biochar with RU treatment were decreased compared to RU treatment.Considering the improvement of soil nutrient status,reduction of carbon emissions and promotion of rapeseed yield,2%biochar with 40%RU are suitable for large-scale application in rapeseed cultivation for purple soil in southwest dryland.关键词
生物炭/氮肥/土壤养分/土壤呼吸/油菜/产量/土壤碳排放/旱地/紫色土Key words
biochar/nitrogen fertilizer/soil nutrients/soil respiration/rape/yield/soil carbon emissions/dry land/purple soil分类
农业科技引用本文复制引用
田效琴,李卓,刘永红..生物炭与尿素配施对旱地紫色土土壤养分、呼吸和油菜产量的影响[J].中国农学通报,2025,41(13):13-18,6.基金项目
四川省自然科学基金项目"西南旱地'新两熟'区土壤碳排放对有机无机肥配施的响应"(2024NSFSC0344) （2024NSFSC0344）
基金培育项目"油菜膜侧集雨抑蒸种植土壤微生物群落结构和功能特征"(JJPY2302) （JJPY2302）
省财政自主创新专项"主要粮油作物Cd吸收积累规律及消减途径"(2022ZZCX008) （2022ZZCX008）
国家重点研发计划项目"丘陵夏玉米农机农艺融合关键技术创新与集成"(2023YFD2301902-2) （2023YFD2301902-2）
国家成都农业科技中心地方财政专项"丘区(简阳)粮油全程机械化生产关键核心技术攻关"(NASC2024KY05) （简阳）
国家成都农业科技中心地方财政专项"邛崃市粮油高质高效生产关键技术攻关"(NASC2024KY06) （NASC2024KY06）
1+9揭榜挂帅项目"绿色丰产突破性栽培技术"(1+9KJGG010). （1+9KJGG010）
