pihustusjaotus

Pihustusjaotus refers to the spatial distribution of sprayed liquid across a target surface, produced by spray nozzles in agricultural, horticultural, and industrial applications. It describes how the spray coverage varies within a swath, including the uniformity, overlap between adjacent spray passes, and the total treated area.

The distribution is governed by several factors. The type of nozzle (for example, full-cone, hollow-cone, or air-atomizing), the spray pattern and droplet size, the flow rate and spray pressure, and the distance between the nozzle and the target all influence how the liquid is spread. Boom height and spacing, travel speed, and swath width determine coverage geometry, while environmental conditions such as wind, temperature, and humidity affect drift and final deposition. Target surface characteristics and application objectives (e.g., protection, fertilization, coating) also play a role.

Evaluation and optimization methods include using water-sensitive papers or collectors arranged along the spray path to map coverage, measuring droplet size distributions, and calculating uniformity metrics like the coefficient of variation. Calibration of flow rates and pressures, along with appropriate nozzle selection and spacing, are essential for achieving desired distribution. Drift management, including suitable nozzle choice and drift-reducing techniques, is an important consideration in many contexts.

Applications of pihustusjaotus span crop protection spraying, foliar fertilization, greenhouse spraying, and industrial coating or cleaning processes. Ongoing developments in precision agriculture, such as variable-rate spraying and drone-based applications, aim to improve distribution efficiency and reduce environmental impact.