dry-farming英d'raɪf'ɑːmɪŋ美d'raɪf'ɑːmɪŋCOCA³¹⁵¹¹¹⁺⁴BNC²³⁶²¹³⁺¹ 基本例句 旱作农业¹⁰⁰ The nutrient source of dry-farming has comed from air nutrient down into soils, and soil nutrient mineralization, and applied fertilizers. 旱作土壤可为作物利用的养分主要来源于土壤矿化、大气沉降和肥料投入。 cnki