中国土壤与肥料Issue(1)：45-52,8.DOI:10.11838/sfsc.1673-6257.24250
碱性土改良施肥对沃柑果园土壤性质的影响
Effect of improved fertilization on soil properties of Orah orchard in alkaline soil
摘要
Abstract
Under the condition of equal nitrogen,phosphorus and potassium fertilization,the experimental study on the effect of improved fertilization on soil properties in orchard alkaline soil was carried out in order to obtain the technical scheme of improved fertilization in alkaline soil and provide theoretical basis for the application of improved technology in orchard alkaline soil.The effects of different alkaline soil improvement and fertilization treatments on soil properties of Orah orchard were studied by using eight-year-old Orah varieties with Citrange as the base stock and Fukumoto navel orange as the intermediate stock.Six experimental treatments were set up,including conventional compound fertilizer(CF),formula fertilizer(urea+potassium sulfate+calcium superphosphate,FF),compound fertilizer+sulfur powder(CF+S),compound fertilizer+desulfurized gypsum(CF+T),formula fertilization+sulfur powder(FF+S),and formula fertilizer+desulfurized gypsum(FF+T).Compared with CF treatment,the improved fertilization of different alkaline soils increased the total porosity and organic matter content of the soil,and the FF+T and CF+T treatments were relatively the largest,which increased by 9.2%and 60.1%compared with the CF treatment.At the same time,the content of soil nutrient elements was increased in different degrees,and the FF+T treatment was the highest.The soil bulk density,pH value and Na+exchange capacity of each alkaline soil improved fertilization treatment were reduced,and the FF+T treatment was the smallest,which was 9.7%,15.6%and 16.7%lower than that of CF treatment,respectively.The activities of soil sucrase,urease,alkaline phosphatase and catalase in FF+T treatment were the highest,which were 17.8%,43.8%,48.8%and 38.4%higher than those in CF treatment,respectively.The soil carbon emission flux of the orchard was relatively large in July and relatively small in December,and the FF+T treatment was the smallest,which was 25.5%and 12.7%lower than the CF treatment,respectively.The order of the comprehensive scores of the principal components of each treatment was FF+T>CF+T>FF+S>CF+S>FF>CF,that was,the effect of FF+T treatment on improving the soil properties of the citrus orchard was relatively optimal.关键词
碱性土/改良施肥/土壤性质/沃柑Key words
alkaline soil/improved fertilization/soil properties/Orah引用本文复制引用
喻莹,贾晓晨,夏心杰,吕强,谢让金,马岩岩,郑永强,易时来..碱性土改良施肥对沃柑果园土壤性质的影响[J].中国土壤与肥料,2025,(1):45-52,8.基金项目
乡村振兴专项"万州丘陵山地玫瑰香橙园差异化精准变量施肥技术" （）
国家重点研发计划课题(2018YFD0700602) （2018YFD0700602）
中国农业科学院柑桔研究所荆门专家工作站(二期). （二期）
