Clopidourea is a phenylurea cytokinin, which can affect the development of plant buds, accelerate cell mitosis, promote cell growth and differentiation, and prevent the abscission of fruits and flowers, so as to promote plant growth, precocity, delay the senescence of leaves in the later stage of crops and increase yield. It is mainly manifested in: ① the function of promoting the growth of stems, leaves, roots and fruits. For example, it can make leaves hypertrophy and increase production when used in tobacco planting. ② Promote results. It can increase the output of fruits and vegetables such as tomatoes (tomatoes), eggplants and apples. ③ Accelerate fruit thinning and defoliation. Fruit thinning can increase fruit yield, improve quality and make fruit size uniform. For cotton and soybeans, falling leaves make harvesting easy. ④ When the concentration is high, it can be used as herbicide. ⑤ Others. Such as the drying effect of cotton, sugar beet and sugarcane increase sugar content, etc.