The choice of economical, practical and safe plant protection machinery can greatly promote agricultural production. Farmers' friends can purchase from the following aspects:

　　1. The characteristics of pests and diseases of the control object and the application methods and requirements. For example, the location of the disease or insect on the plant or the hazard, the dosage form, physical properties and dosage of the agent, the spraying operation method (dusting, fog, smoke, etc.), the spray is constant, low or ultra low, etc. Plant protection machinery type.

　　2. The natural conditions of the control object and the adaptability of the selected plant protection machinery. For example, the leveling and planning of the field is plain or hilly, dry or paddy field, fruit tree size, plant spacing and inter-tree gap, considering the adaptability of selected implements in the field and operation, and the passing performance between fruit trees. .

　　3. Cultivation and growth of crops. For example, the plant height and density of the crop, whether the spraying is in the seedling stage, or in the middle and late stages, the location and density of the required coating, the height and size of the canopy of the fruit tree, and whether the performance of the spraying (sprinkling) parts of the selected plant protection machinery can meet the prevention and control Claim.

　　4. Safety of selected plant protection machinery during operation. For example, whether there is water leakage, leakage of drugs, pollution to operators, whether it will cause phytotoxicity to crops.

　　5. Understand whether the product has passed the test of the product quality inspection department and passed the test. Whether the product has obtained a promotion license or production license and knows its expiration date.

　　6. Whether the product and the manufacturer's reputation are good or bad, whether the product quality is stable, whether the after-sales service is good or not, whether the product has won the award that can truly reflect the quality, and whether it has won the quality award.