swamp cabbage短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 空心菜 The effects of different ratio organo- inorganic-mixed nitrogen fertilizers application on nitrate contents of Chinese cabbage, swamp cabbage and tested soil were studied with plot experiment. 通过田间试验，研究了不同比例有机无机氮肥配施对小白菜和空心菜及供试土壤硝酸盐含量的影响。 cnki