建议应该在温室的地层中增设保温层，并指出采用栽培床以减少灌溉水引起的热能损失的必要性。
The experimental results show that the under ground heat loss is considerable in cold climate and it is necessary to build a underground heat conservation for greenhouses.
建议应该在温室的地层中增设保温层，并指出采用栽培床以减少灌溉水引起的热能损失的必要性。
The experimental results show that the under ground heat loss is considerable in cold climate and it is necessary to build a underground heat conservation for greenhouses.
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