Soil-less cultivation requires greenhouse construction, with walls of a net-like material and a glass roof. Summers in Taiwan are humid and should the sunlight pass through the greenhouse, without being dissipated, the combination of heat and humidity can cause plants in soil to stop growing if not kill them.
因為依照溫室效應，光線若透過玻璃照進室內，熱度不散，室溫必增，若超過攝氏卅度，植物不是死亡，就是停止生長。