关键词: 温室草莓, 喷药方式, 喷雾机, 作业质量, 沉积量, 农药利用率

Abstract: In order to screen out the plant protection tools and spraying methods suitable for greenhouse strawberry pest control, a new imported greenhouse strawberry plant protection machinery was chosen based on extensive research on plant protection machinery and spraying technology in China and internationally. This machine is equipped with two spray devices: An electrostatic spray gun and a ridge strawberry profiling spray bar. The operating performance of this machine was compared with that of the commonly used spray gun in strawberry greenhouses. The droplet deposition distribution, droplet deposition distribution in the strawberry canopy, liquid deposition amount, pesticide effective utilization rate, and ground loss data of two models and three spray equipment under different spraying modes were tested. The results showed that the loss rate of liquid pesticide on the ground between the rows increased in the order of electrostatic spray gun, profiling spray bar, and traditional spray gun. The pesticide utilization rate of the electrostatic spray gun in different operation modes was between 40% to 65%, the pesticide utilization rate of the profiling spray bar was 29.87%, and the pesticide utilization rate of the traditional spray gun was the lowest at 8.18%. The application effect of the electrostatic spray gun was better than that of the profiling spray rod and traditional spray gun. The different operation modes of the electrostatic spray gun have their advantages, with the straightline direct spray operation mode achieving the highest deposition rate, making it more suitable for controlling greenhouse strawberry diseases and pests. This study provides data support for the selection and operation of strawberry plant protection machinery.

Key words: greenhouse strawberry, spraying method, spray machine, operation quality, sedimentation, pesticide utilization rate