空间高等植物栽培地面实验装置的研制

Development of a Ground based Experimental Facility for Space Cultivation of Higher Plant.

为进行受控生态生保系统试验研究，研制了地面模拟实验装置。该装置由主机、氧气和二氧化碳测控系统、植物栽培系统和整机数据管理系统组成。栽培室内胆为镜面不锈钢结构，其有效容积１ ．８ｍ ３ ，有效栽培面积１ ．２ ｍ ２ ； 采用电子荧光灯作光源和聚乙烯醇缩甲醛材料作根基质； 栽培室内的温度、相对湿度、氧气浓度、二氧化碳浓度、光周期和光强度等环境参数和营养液的ｐＨ 值、电导率、溶解氧、储箱液位和供液流量等参数均实行自动调控，并通过上位机实施定期的动态巡检、采集、储存和打印。联合调试和初步植物栽培实验的结果证明该设备的性能达到了最初的设计要求，能够满足今后空间植物栽培或其它生物培养地面模拟实验研究的需要。

A ground based experimental facility was developed for conducting initial ground based simulation study of Controlled Ecological Life Support System (CELSS). The facility is composed of a main chamber, O 2 and CO 2 composition control subsystems, plant cultivation subsystem and whole data management subsystem. The growth room, being composed of a inner wall of mirror face stainless steel, holds a volume of 1.8 m 3 and a growing area of 1.2 m 2; electronic fluorescent lamps were used as lighting sources and polyvinyl formal was used for root matrixes; the environmental parameters of the growing room such as temperature, relative humidity, O 2 concentration, CO 2 concentration, lighting period and irradiance intensity and the nutrient parameters such as pH, electrical conductivity, dissolved oxygen concentration, liquid level of nutrient storage tank and flow rate of nutrient were all controlled automatically; all of the above mentioned parameters can be inspected, collected, stored and printed regularly and dynamically. The results of a combined debugging and preliminary plant cultivation verified that the technical target of the faci lityhad reached its initial design requirements, it can be used to conduct ground based simulation studies of space cultivation of higher plants.