The nutrient release curves of test fertilizers in water were S pattern for CRF1 anti CRF2. burst pattern for SCU. and reverse L pattern for IBDU.

• 结果表明：CRF1和CRF2在水中的释放曲线为"S"型，SCU为“破裂式释放”，IBDU的释放曲线呈倒"L"型；