生物炭与脱硫石膏配施对龟裂碱土理化性质的影响
杨恩宇 , 王珍 , 张峰举 , 陈利荣 , 杨凌彬
农业科学研究(中英文) ›› 2025, Vol. 46 ›› Issue (04) : 73 -79.
生物炭与脱硫石膏配施对龟裂碱土理化性质的影响
Effects of Biochar and Desulfurization Gypsum on the Physicochemical Properties of Cracked Alkaline Soils
为研究生物炭与脱硫石膏配施对龟裂碱土的改良效果,以宁夏平罗地区龟裂碱土为研究对象,通过田间小区试验,设置对照(CK)、施加生物炭(C)、施加脱硫石膏(T)、混施生物炭和脱硫石膏(T+C)4个处理,研究不同处理对龟裂碱土理化性质及高粱产量的影响。结果表明:单施生物炭、脱硫石膏及混施生物炭与脱硫石膏处理均降低土壤碱化度、pH和容重,增加土壤有机质、铵态氮质量比以及作物产量。单施生物炭对土壤理化性质的影响最显著,其中土壤硝态氮质量比、阳离子交换量、速效钾质量比较CK分别显著增加168.83%、55.81%、110.09%,较单施脱硫石膏分别增加253.99%、3.08%、81.75%,较混施脱硫石膏和生物炭分别增加了152.21%、19.64%、89.26%。单施脱硫石膏可以显著提升高粱生长指标,使籽粒产量较CK显著增加18.99%。2种改良剂单施对龟裂碱土理化性质的改善及高粱产量的提高的效果较两者配施更优。
This study investigates the effects of biochar and desulfurization gypsum on improving cracked alkaline soils, specifically focusing on those in the Pingluo region of Ningxia. A field plot experiment was conducted with four treatments: control (CK), application of biochar (C), application of desulfurization gypsum (T), and a combined application of biochar and desulfurization gypsum (T+C). The effects of these treatments on the physicochemical properties of the cracked alkaline soils and sorghum yields were assessed. The results indicate that all three treatments reduce soil alkalinity, pH, and bulk density, while increasing soil organic matter, ammonium nitrogen content, and crop yield. The single application of biochar results in significant increases in soil nitrate nitrogen, cation exchange capacity, and available potassium by 168.83%, 55.81%, and 110.09%, respectively, compared to CK; by 253.99%, 3.08%, and 81.75% compared to T; and by 152.21%, 19.64%, and 89.26% compared to T+C. Additionally, the single application of desulfurization gypsum significantly improves sorghum growth metrics, leading to an 18.99% increase in grain yield compared to CK. Overall, the individual applications of biochar and desulfurization gypsum are more effective in enhancing the physicochemical properties of cracked alkaline soils and increasing sorghum yields than their combined application.
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国家重点研发计划项目(2021YFD1900603-06)
国家自然科学基金项目(52360029)
宁夏自然科学基金项目(2023AAC03111)
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