西北农业学报2025，Vol.34Issue(8)：1467-1475,9.DOI:10.7606/j.issn.1004-1389.2025.08.010
改良物料投入对内蒙盐碱地土壤理化性状、玉米光合特性及产量的影响
Effects of Improved Materials on Soil Physical and Chemical Properties,Photosynthetic Characteristics and Maize Yield in Saline-Alkali Land in Inner Mongolia
摘要
Abstract
This study investigates the effects of various amendment materials on the physical and chemical properties of saline-alkali soil,as well as their impact on maize physiology in Inner Mongolia.The study aims to to establish a theoretical foundation for enhancing maize production in this region.The experiment was conducted in Wayao Village,Tumed Right Banner,Inner Mongolia,from 2022 to 2023.The types and dosages of the improved materials used were desulfurization gypsum(DG)at 15 000 kg/hm2,a new soil amendment(NSA)at 15 000 kg/hm2,and bio-organic fertilizer(BO)at 7 500 kg/hm2.This experiment assessed changes in soil bulk density,porosity,pH,and total salt con-tent in the 0-40 cm layer,using a control group(CK)without amendments,and evaluated the effects of various material inputs on maize photosynthesis and yield.The results indicated that the soil bulk density,soil porosity,and pH value could be effectively reduced by the three improved materials.The total salt content in the 0-40 cm soil layer significantly decreased by 48.50％with DG treatment over two consecutive years,while net photosynthetic rate and chlorophyll SPAD value increased with BO treatment.Furthermore,maize grain yield increased by 57.25％with NSA treatment and by 46.18％with BO treatment.The average economic benefits over the two-year period were as follows:BO(2 257.53 yuan/hm2)＞DG(1 740.00 yuan/hm2)＞NSA(—1 469.19 yuan/hm2).In conclusion,DG treatment improves soil structure,decreases pH in the 20-40 cm layer,and reduces salt content in the 0-40 cm layer,while BO treatment enhances maize's net photosynthetic rate and chlorophyll con-tent,significantly increasing grain yield and economic benefits.Therefore,DG and BO can be employed to improve the physical and chemical properties of moderate to severe saline-alkali soils in Inner Mon-golia,thereby promoting the growth and development of maize.关键词
内蒙盐碱地/改良物料/土壤理化性状/光合特性/产量Key words
Inner Mongolia saline-alkali land/Improved materials/Soil physical and chemical proper-ties/Photosynthetic characteristics/Yield引用本文复制引用
武晋民,白小龙,张恩,张邦彦,张百含,刘盼婷,田丰,赵卉,王彬..改良物料投入对内蒙盐碱地土壤理化性状、玉米光合特性及产量的影响[J].西北农业学报,2025,34(8):1467-1475,9.基金项目
内蒙古土默特右旗盐碱地改良示范区科技项目 （）
河套灌区盐碱地改良利用重大战略咨询研究(2023NXZD6). Science and Technology Project for Demonstrative Area for Saline-alkali Land Im-provement in Tumd Right Banner,Inner Mongolia （2023NXZD6）
Major Strategic Consulting Research on the Im-provement and Utilization of Saline-alkali Land in the Hetao Irrigation Area(No.2023NXZD6). （No.2023NXZD6）
