Can plant growth regulators be added to water-soluble fertilizers such as foliar fertilizer at will?

A: No, water-soluble fertilizer is a multi-component compound fertilizer that can be completely dissolved in water. Can be quickly dissolved in water, is easily absorbed by crops, and has high absorption and utilization rate. It can be applied to facility agriculture such as spraying and drip irrigation to realize the integration of water and fertilizer and achieve the efficiency of saving water, fertilizer and labor. The main purpose of using it is to increase crop yield. However, plant growth regulators have many functions, including promoting growth, increasing yield, resisting stress, preventing lodging and protecting fruits. The purpose is clear, the scope and method are specific, and the dosage requirements are accurate. Fertilizers and plant growth regulators have different action mechanisms. Plant growth regulators can regulate plants, which is bidirectional, both promoting and inhibiting, while fertilizers mainly promote plants, which is unidirectional. Adding plant growth regulators to water-soluble fertilizers at will may, on the one hand, cause the interaction between effective components, reduce the efficacy or aggravate the phytotoxicity; On the other hand, when the plant growth regulator is used together with fertilizer, its concentration is very low and it cannot play its due role. If the dosage is increased, it will cause fertilizer waste; Moreover, if the use method and time are not appropriate, not only the effect is poor, but also the opposite effect or drug harm will occur.

According to the regulations of the Ministry of Agriculture, when applying for fertilizer registration, water-soluble fertilizer production enterprises shall make a written commitment not to add pesticide components such as plant growth regulators to the water-soluble fertilizer products applied for registration; It is forbidden to label water-soluble fertilizers with pesticide efficacy such as plant growth regulators, and exaggerate the functions of products. In case of violation, the production enterprises and operators will be severely punished in accordance with the relevant provisions of the Regulations on Pesticide Management and the Measures for the Administration of Fertilizer Registration.