长效尿素长效尿素施入土壤以后．通过本身所含的尿酶抑制剂（氢醌），适当抑制脲酶活动性，延缓尿素水解速度。耕种前将长效尿素施入土壤，初期，抑制剂作用强，尿素水解速度慢，生成氨量少，此时种子发芽和幼苗生产需肥量不多。随着时间的推移，抑制剂作用减弱，尿素水解... Long-acting urea urea applied to the soil after long-term. Urease inhibitors (hydroquinone), which are themselves contained, appropriately inhibit urease activity and slow down the rate of urea hydrolysis. Before long-term urea cultivation into soil, long-term, strong inhibitors, urea hydrolysis slow, less ammonia generation, this time the seed germination and seedling production required little fertilizer. With the passage of time, the role of inhibitors diminished, urea hydrolysis ...