Effects of Tebeigai Soil Conditioner on Sweet Potato Yield,Economic Benefit,and Soil Physical and Chemical Properties

PAN Zhu-cai

doi:10.13651/j.cnki.fjnykj.2025.10.013

Abstract：In order to explore the effects of different application rates of Tebeigai Soil Conditioner on the acid soil improvement and sweet potato yield and economic benefits,the field fertilizer efficiency experiments of sweet potato were conducted in Qiaoliu Village of Honglai Town and Dongtou Village of Guanqiao Town,Nan'an City.Four treatments were set up in this experiment,including the conventional fertilization(CK),conventional fertilization+750 kg·hm-2 of Tebeigai Soil Conditioner(T1),conventional fertilization+1500 kg·hm-2 of Tebeigai Soil Conditioner(T2),and conventional fertilization+3000 kg·hm-2 of Tebeigai Soil Conditioner(T3).The effects of different application rates of Tebeigai Soil Conditioner on the sweet potato yield,economic benefits,and soil physical and chemical properties were studied.The results showed that in Qiaoliu Village of Honglai Town,the fresh weight of sweet potatoes in the T2 treatment significantly increased by 3,033.0 kg·hm-2 compared to CK,representing a 17.77%increase.In Dongtou Village of Guanqiao Town,the T2 treatment increased the yield by 1,130.0 kg·hm-2,representing a 6.48%increase.The effects of the soil conditioner on soil pH and exchangeable calcium content varied by the experimental site.In Qiaoliu Village of Honglai Town,the soil pH in the T2 treatment increased to 4.63,a significant increase of 0.25 units,and the exchangeable calcium significantly increased by 41.5 mg·kg-1.In Dongtou Village of Guanqiao Town,the soil pH in the T2 treatment increased to 5.21,an increase of 0.08 units,and the exchangeable calcium significantly increased by 38.4 mg·kg-1.The economic benefits of Qiaoliu Village in Honglai Town and Dongtou Village in Guanqiao Town were the highest in the T2 treatment,with the net output value increasing by 16.23%and 3.75%,respectively compared with the control group.