growth helping matter

例句：

1. 1. The addition ofthis growth-promoting substance has significantly improved the plant's growth rate.
   这种生长促进物质的添加显著提高了植物的生长速度。
2. 2. The research team discovered a new compound that could be used as a growth-promoting agent for crops.
   研究团队发现了一种新化合物，可以作为农作物的生长促进剂使用。
3. 3. The company is developing a new product that will help farmers increase their crop yields by using this growth-promoting substance.
   该公司正在开发一种新的产品，将帮助农民通过使用这种生长促进物质来提高作物产量。