湖北农业科学2026，Vol.65Issue(2)：48-56,88,10.DOI:10.14088/j.cnki.issn0439-8114.2026.02.008
改性果木生物炭对石灰性土壤磷有效性及小麦生长的影响
Effects of modified fruit-wood biochar on phosphorus availability in calcareous soil and wheat growth
摘要
Abstract
To investigate the regulatory effects of fruit-wood biochar modified by different chemical methods on phosphorus availabili-ty in calcareous soil and wheat growth,and to optimize the application strategy of biochar in phosphorus management,the effects of fruit-wood biochar modified by KH2PO4,citric acid,and HCl on the available phosphorus content in calcareous soil,the dry weight of wheat,and the phosphorus uptake in wheat shoots were systematically evaluated through an incubation experiment and a pot experi-ment.The results showed that among the three modified treatments,there was no significant difference in the available phosphorus con-tent between the rinsed and unrinsed biochar,so the unrinsed biochar was uniformly used in the subsequent experiments.The modifi-cation with KH2PO4 significantly increased the available phosphorus content of the biochar.After application to the soil,it could re-lease phosphorus,causing the soil available phosphorus content to reach a peak at 14 days and maintain a relatively high level for a long period.At an application rate of 2.0％,a second release peak appeared at 40 days,demonstrating a good slow-release property.The biochar modified by KH2PO4 showed the best effect at an application rate of 1.0％,which not only significantly increased the dry weight of wheat but also significantly enhanced the phosphorus uptake in wheat shoots.After the application of biochar modified by cit-ric acid or HCl to the soil,there was no obvious change in the soil available phosphorus content.The biochar modified by KH2PO4 was more suitable as a slow-release phosphorus carrier for the amelioration of calcareous soil.关键词
改性/果木/生物炭/石灰性土壤/磷/有效性/小麦生长Key words
modified biochar/fruit-wood/calcareous soil/phosphorus/availability/wheat growth分类
农业科技引用本文复制引用
范怡璇,姜文迁,李泽宇,王旭东,张育林..改性果木生物炭对石灰性土壤磷有效性及小麦生长的影响[J].湖北农业科学,2026,65(2):48-56,88,10.基金项目
国家自然科学基金青年项目(41601324) （41601324）
陕西省科技攻关计划项目(2023NYGG011) （2023NYGG011）
陕煤集团神木红柳林矿业公司集团级科研项目(2020SMHKJ-A-J-03-02/02) （2020SMHKJ-A-J-03-02/02）
