2024 Guangxi Question 12 Single-choice Differentiating 2024_省自主命题(广西) 12. 本实验中,在地表打孔灌沙是为了( )①促进表层土壤水分下渗 ②提高表层土壤含水量③抑制下层土壤水分上返 ④降低下层土壤蒸发量 A. ①③B. ①④C. ②③D. ②④ Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →