摘要
本研究旨在为内蒙古河套灌区的不同程度盐渍化土壤选择适宜的改良产品。选取了具有代表性的腐植酸和新型土壤改良产品,并通过田间试验评估了施用这些改良产品后土壤盐分含量、pH值、有机质含量、阳离子交换量(CEC)以及对向日葵株高和产量的影响。试验结果表明,5种土壤改良产品均能改善表层土壤的理化性质。其中,益百稼土壤调理剂对轻度和中度盐渍土具有明显的改良效果,而克碱土壤修复剂对轻度、中度、重度盐渍土均表现出良好的改良优势。在不同程度盐渍化土壤中,腐植酸对作物增产效果仅次于克碱土壤修复剂和益百稼土壤调理剂。因此,克碱土壤修复剂和益百稼土壤调理剂是该试验区较为适宜的改良产品。
To select the improvement products suitable for different degrees salinized soil in Hetao irrigation area of Inner Mongolia,representative humic acid and new soil improvement materials were selected.By comparing and analyzing the effects of different improvement materials on total salt quantity,pH,organic matter,CEC at the 0-20 cm soil depth after harvesting,as well as the effects on sunflower plant height and yield,the optimal saline-alkali improvement materials were explored.The results showed that all the improvement materials improved physicochemical property of salinized soil.‘Yibaijia’soil conditioner had the advantage of improving mild and moderate saline soil.‘Kejian’soil remediation agent was suitable for different degrees of salinized soil.The improvement effect of humic acid on different degrees salinized soil was second to‘Kejian’and‘Yibaijia’.According to the effect of different amendments on soil salinity index and sunflower yield,‘Kejian’and‘Yibaijia’were more suitable for saline-alkali land in Hetao area.
作者
孙向伟
赵宇新
于亮亮
李宁
丁仕青
SUN Xiangwei;ZHAO Yuxin;YU Liangliang;LI Ning;DING Shiqing(Meteorological Bureau of Bayannaoer,Linhe,Inner Mongolia 015000)
出处
《中国农学通报》
2024年第26期53-57,共5页
Chinese Agricultural Science Bulletin
基金
内蒙古自治区气象局引导性创新基金项目“基于遥感的向日葵长势监测及估产模型研究”(nmqxydcx202220)
内蒙古自治区科技计划项目“河套平原盐碱地生态综合治理技术研发与多情景集成示范”(2022YFHH0144)。
关键词
河套灌区
土壤改良产品
盐渍土
理化性质
向日葵
Hetao irrigation area
soil improvement products
salinized soil
physical and chemical properties
sunflower
