Research Progress on Nutrient Uptake and Growth Characteristics of Plants at Spatial Low Pressure
The atmospheric pressure of the lunar/Mars bases is generally lower than the standard at-mospheric pressure(101 kPa),so it is very important to carry out low-pressure plant experiments to study the effects of different low-pressure environments and different atmospheric components on the cultivation,growth and development of different species of plants.It will be helpful to have a deeper understanding of the growth differences of plants under low pressure environment,so as to establish a more complete plant unit system within the Controlled Ecological Life Support System.In this pa-per,the main research results of low-pressure plant culture experiments at domestic and abroad in recent years were summarized,the differences in plant nutrient uptake and dynamic characteristics,and the effects of low pressure on plant growth status,biomass and gene expression were compared and analyzed.In the end,the future research direction was prospected.
Controlled Ecological Life Support Systemlow pressureplant cultivationnutrient up-takegrowth characteristic