synthetic manure hotbed

例句：

1. 1. The synthetic manure hotbed is an essential tool for nutrient management in agriculture.
   合成肥料培养床是农业中养分管理的关键工具。
2. 2. This research aims to develop a synthetic manure hotbed that can effectively promote plant growth.
   这项研究旨在开发一种合成肥料培养床，以有效促进植物生长。
3. 3. The synthetic manure hotbed has been proven to be highly effective in improving soil fertility and crop yield.
   合成肥料培养床已被证明在提高土壤肥力和作物产量方面具有很高的效率。