有机土壤调理剂和富氢水对土壤养分赋存特征的协同效应OA

[Objective]Continuous monoculture in orchards can lead to soil degradation and nutrient imbalances,compromising fruit yield and sustainability.Applying organic soil conditioners can alleviate these detrimental effects.This paper presents the results of an experimental study on the combined effects of applying organic soil conditioner and hydrogen-rich water on soil nutrient fertility in a kiwifruit orchard.[Method]The experiment included six treatments:no fertilization(CK),conventional fertilization+conventional irrigation(NW),conventional fertilization+irrigation with hydrogen-rich water(NM),application of organic soil conditioner+irrigation with conventional water(BW),application of organic soil conditioner+irrigation with hydrogen-rich water(BM),and application of 50%organic soil conditioner and 50%conventional fertilizer+irrigation with hydrogen-rich water(HBNM).During the experiment,we measured soil physicochemical properties,nutrient contents and soil fertility.The effects of the treatments on soil fertility were evaluated using the Nemerow composite index combined with analysis of key driving factors.[Result]Fertilization significantly increased soil nutrients,including total nitrogen(TN)and total phosphorus(TP),compared to CK.Among all treatments,BM achieved the highest integrated fertility index(IFI=2.84)and the greatest increases in SOC and available nutrients;it also enhanced nutrient accumulation and biological activity in the soil.HBNM gave the lowest IFI,indicating diminished nutrient supply.The contribution of various factors to soil fertility was ranked in the order AP(available phosphorus)＞AN(available nitrogen)＞TP＞TN＞SOC(soil organic carbon)＞pH＞TK(total potassium)＞AK(available potassium).SOC was positively correlated with TN,TP,AP,and AK(P＜0.001),and negatively correlated with pH(P＜0.001),underscoring its importance in soil fertility.[Conclusion]Applying soil conditioner and hydrogen-rich water can effectively improve soil physical and chemical properties,significantly increase nutrient contents and enhance overall soil fertility.It can be used as an improved cultivation practice for sustainable kiwifruit production.