seed bed heater

例句：

1. 1. The seed bed heater is a popular choice for small greenhouses.
   种子床加热器是小型温室的热门选择。
2. 2.We used the seed bed heater to warm up the soil before planting.
   我们在播种前使用了种子床加热器来加热土壤。
3. 3.The seed bed heater helps to maintain the temperature and humidity in the growing area.
   种子床加热器有助于保持生长区域的温湿度。