山西农业大学学报（自然科学版）2025，Vol.45Issue(1)：93-102,10.DOI:10.13842/j.cnki.issn1671-8151.202407063
硅酸盐矿物基土壤改良剂降低土壤酸度及促进菠菜生长的效果
Research on the effect of silicates mineral based soil amendments on reducing soil acidity and promoting the growth of spinach
摘要
Abstract
[Objective]Soil acidification is one of the key factors limiting the green and high-quality development of agriculture.Developing effective soil amendments can enhance the productivity of acidic farmlands and ensure food security.[Methods]In this study,pot experiments were conducted to evaluate the effects of silicate mineral based soil amendments from diverse sourc-es on reducing soil acidity and alleviating aluminum(Al)toxicity,and promoting the growth of spinach.[Results]The results demonstrated that,compared with CK,treatments including silicate mineral+oyster shell(T2),silicate mineral+silica-calci-um-potassium-magnesium fertilizer(T3),silicate mineral+hydroxyapatite(T4)and silicate mineral+biochar(T5)increased soil pH by 0.21 to 1.46 units and reduced exchangeable acidity by 24.3%to 85.2%,exchangeable H+by 11.0%to 65.9%,and exchangeable Al3+by 30.9%to 94.7%.Among these,T2 treatment demonstrated the best results,increasing soil pH by 1.46 units and reducing soil exchangeable Al3+by 94.7%.Besides,T2,T3,T4,and T5 treatments reduced the proportion of exchangeable Al3+in soil exchangeable acidity by 9.0%to 64.8%.These treatments also promoted spinach growth,en-hanced the accumulation of Ca and Mg in plants,and reduced the concentration of Al in plants.In addition,fresh weight and dry weight of spinach increased by 0.60 to 17.90 times and 0.16 to 5.32 times,respectively.The treatments enhanced plant Ca accumulation by 123.0%to 1170.0%and Mg accumulation by 75.0%to 1684.0%,while reducing plant Al concentration by 10.2%to 86.0%.Pearson correlation and PCA analysis showed that soil exchangeable Al3+content(P<0.001),plant Al concentration(P<0.01)and plant Mg concentration(P<0.001)were the core factors affecting spinach biomass.[Conclu-sion]Silicate mineral based soil amendments,particularly those combining silicate minerals with oyster shells,showed great po-tential for preventing soil acidification and promoting crop growth.These findings provided technical support for the utilization of silicate minerals and the improvement of soil acidification.关键词
硅酸盐矿物/土壤酸化/交换性Al3+/菠菜生物量/钙镁吸收Key words
Silicate mineral/Soil acidification/Exchangeable Al3+/Spinach biomass/Calcium and magnesium uptake分类
农业科技引用本文复制引用
范贝贝,黄尚书,黎鑫林,周林,王成孜,伍亮..硅酸盐矿物基土壤改良剂降低土壤酸度及促进菠菜生长的效果[J].山西农业大学学报（自然科学版）,2025,45(1):93-102,10.基金项目
中央高校基本科研业务费专项资金(2021TC117) （2021TC117）
江西省重点研发计划(20203BBF63038) （20203BBF63038）
井冈山农高区省级科技专项"揭榜挂帅"项(20222-051261) （20222-051261）
