promucal

例句：

1. 1. The promucal in this product helps to speed up the growth of plants.
   该产品中的促进剂有助于植物的生长速度加快。
2. 2.The researcher found that the promucal could increase the yield of crops by 20%.
   研究者发现，这种促进剂可以提高作物的产量，增加20%。
3. 3. The use of promucal is recommended for agricultural practices to improve soil fertility.
   推荐使用促进剂来改善农业实践，以增加土壤肥力。