间歇供光模式下光照度和光周期对水培臭菜生长和品质的影响

Effects of light intensity and photoperiod on growth and quality of hydroponically grown arugula(Eruca sativa Mill.)under intermittent light supply mode

为了探究间歇供光模式下,LED红蓝灯光照度与光周期对水培臭菜生长特性及营养品质的影响,设置了4种光照度(幼苗期/生长期):100μmol·m^(-2)·s^(-1)/300μmol·m^(-2)·s^(-1)、150μmol·m^(-2)·s^(-1)/300μmol·m^(-2)·s^(-1)、200μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1)、250μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1)和3种光周期梯度5 h/7 h、6 h/6 h、7 h/5 h,采用双因素完全随机试验对臭菜进行水培,共12组处理。结果表明,水培臭菜在光周期7 h/5 h,光照度(幼苗期/生长期)为250μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1)条件下可溶性蛋白含量最高。但综合考虑能源消耗与经济价值,水培臭菜在光暗周期7 h/5 h,以及光照度(幼苗期/生长期)200μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1)的条件下鲜质量最大,维生素C含量高(0.43 mg·g^(-1)),且30 d总耗能仅为47.0 kW·h,因此可以作为综合最优生产方案。研究结果对水培臭菜的智能植物工厂化生产具有一定的参考意义。

To investigate the effects of LED red and blue light intensity and photoperiod on the growth characteristics and nutritional quality of hydroponically grown arugula(Eruca sativa Mill.)under intermittent light supply mode.Four light intensities(seedling/growing stage)were set:100μmol·m^(-2)·s^(-1)/300μmol·m^(-2)·s^(-1),150μmol·m^(-2)·s^(-1)/300μmol·m^(-2)·s^(-1),200μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1),250μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1) and three photoperiod gradients:5 h/7 h,6 h/6 h,and 7 h/5 h,and 12 groups of treatments were obtained by using a two-factor completely randomized experiment for hydroponics of arugula.The results showed that the soluble protein content of the hydroponically grown arugula were higher than those of other groups under the photoperiod 7 h/5 h and light intensity(seedling/growing stage)of 250μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1).However,considering the energy consumption and economic value,hydroponic arugula had the highest fresh mass at 7 h/5 h photoperiod and 200μmol·m^(-2)·s^(-1)/250μmol·m^(-2)·s^(-1) light level(seedling stage/growing stage),with vitamin C content of 0.43 mg·g^(-1) and total energy consumption of only 47.0 kW·h for 30 days.It can be used as an integrated optimal production scheme.The results of the study have some reference significance for the smart plant production of hydroponically grown arugula.