Effects of Different Urease Inhibitor on Soil Urease Activity and Soybean Growth

The effects of 2 kinds of urease inhibitors, water soluble (AS) and dry power (DP), on soybean growth and soil urea hydrolysis were studied in the paper. The results showed that both forms of urease inhibitors had obvious inhibition effects on the urease activity and urea hydrolysis of soil, and improved the soybean root vigor. The inhibition effects enhanced with the increase of inhibitor concentration. It was found that urease inhibitors had no side effect on soybean seedling height, and there was no obvious difference between the two forms of urease inhibitors.