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COMPATIBILITY OF SALAD CROPS GROWN IN MIXED CROP HYDROPONIC SYSTEMS

机译:混合作物水培系统中生长的沙拉作物的兼容性

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NASA's Advanced Life Support (ALS) Program is developing crop systems for use on spacecraft, or surface habitats on the Moon and Mars. Growing multiple crops on a shared nutrient solution potentially simplifies production of a variety of crops, but may result in nutrient competition and production of allelochemicals that reduce yield. Three salad crops, radish (Raphanus sativus L. cv. Cherry Bomb II), lettuce (Lactuca saliva L. cv. Flandria) and bunching onion (Allium fistulosum L. cv. Kinka) were grown for 28 days hydroponically in either monoculture (control) or in a mixed-crop arrangement. Plants were grown in a walk-in growth chamber with baseline environments maintained at an air temperature of 28°C, 50% RH, 17.2 mol m~(-2) d~(-1) daily PPF integral and a 16-h light/8-h dark photoperiod under cool-white fluorescent lamps. Experimental CO2 treatments consisted of 400,1200 and 4000 mu mol mol~(-1).
机译:美国宇航局的先进生活支持(ALS)计划正在开发用于航天器的作物系统,或月球和火星上的表面栖息地。在共用营养解决方案上生长多种作物可能简化了各种作物的生产,但可能导致营养竞争和降低产量的所有化学的生产。三种沙拉作物,萝卜(Raphanus sativus L. cv。樱桃炸弹II),莴苣(Lactuca Saliva L.CV.Flandria)和聚集的洋葱(葱属瘘L.CV.kinka)在单一种植体中,水培育(对照)或以混合作物排列。植物在步入式生长室中生长,基线环境保持在空气温度为28°C,50%RH,17.2mol m〜(-2)D〜(-1)每日PPF积分和16小时光线/ 8-H浅白色荧光灯下的深色光纤。实验二氧化碳处理包括400,1200和4000μmmol〜(-1)。

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