A hydroponics cultivation experiment was conducted using celery,to find the variety of the nitrates auumulated,at different developmental stages,different organ tissues and different harvest.
英
美
- 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；
- 今日热词
-
- 深远海浮式风电平台 - deep-sea floating wind power platform
-
- 京雄高速公路 - Beijing-Xiongan expressway
-
- 农业及相关产业增加值 - the added value of agriculture and related industries
