A study in Sichuan province looked at how farmers use fertilizer on crops. They found that farmers spend a lot of money on fertilizer, but don't always use it efficiently. Different regions use different amounts of fertilizer, and not many farmers are using balanced fertilizer technology. This means that farmers aren't getting the most out of the fertilizer they're using. The study suggests that farmers need better guidance on how to use fertilizer properly to grow healthy, uncontaminated crops.