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以美国西芹为材料 ,用营养液盆栽方法 ,研究了不同生育期、不同部位、不同收获期芹菜体内硝酸盐含量的变化规律 .结果表明 :芹菜体内硝酸盐的积累量与不同生育期生长势呈正相关 ;不同部位硝酸盐积累程度不一 ;收获期直接影响芹菜体内的硝酸盐积累量
Taking the celery of America as the material, the change rule of nitrate content in celery with different growth stages, different parts and harvesting times was studied by using nutrient solution potted method.The results showed that the accumulation of nitrate in celery was positively correlated with the growth potential at different growth stages Related to different parts of the accumulation of nitrate levels vary; harvested directly affect the accumulation of nitrate in the celery body