This standard specifies the requirements for spraying cotton defoliants by agricultural drones, pre-operation requirements, spraying time, dosage, dispensing methods, spraying operation requirements and safety precautions and other technical contents. This standard applies to Xinjiang cotton areas and other cotton areas with similar ecological conditions. Operational specifications and requirements for spraying cotton defoliants by agricultural drones with a take-off weight ≤100kg and an empty weight ≤60kg.