Method for selecting unmanned aerial vehicle pest control pesticide spraying system parameters

Abstract

The invention discloses a method for selecting parameters of a pesticide spraying system for preventing and treating diseases and insect pests by an unmanned aerial vehicle. The method comprises the following six steps: (1) designing a test scheme; (2) preparing test reagents with different densities; (3) performing a specific test, and recording corresponding test data; (4) designing a regressionmathematical model for the test data, and then performing linear regression processing to obtain a linear regression formula; (5) analyzing the fitting degree of the regression model according to theregression statistical analysis table; and (6) selecting scientific and reasonable pesticide spraying system parameters according to a linear regression formula. The invention has the following beneficial effects. Parameters of the pesticide spraying system for preventing and treating plant diseases and insect pests of the unmanned aerial vehicle are selected according to the density of pesticideliquid and a regression equation obtained through an experiment instead of depending on a parameter selection table provided by a nozzle manufacturer, so that the parameters of the pesticide sprayingsystem are more scientifically and reasonably selected, and accurate spraying and decrement synergy are truly realized.

Description

technical field [0001] The invention relates to a spraying technology for preventing and controlling plant diseases and insect pests, in particular to a method for selecting parameters of a spraying system for preventing and controlling plant diseases and insect pests. Background technique [0002] In recent years, aerial plant protection has developed rapidly, and plant protection drones, known for saving water, medicine, and high efficiency, have officially entered the stage of market competition, and the market structure has begun to take shape. With the continuous expansion of the aviation plant protection market and the hype of the media, it seems that plant protection drones are a perfect solution. However, at present, the parameters of the spraying system of the plant protection drone are mainly selected according to the parameters provided by the nozzle manufacturer, and the parameters provided by the manufacturer are based on the results of the experiment when spray...

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Problems solved by technology

However, at present, the parameters of the spraying system of the plant protection drone are mainly selected according to the parameters provided by the nozzle manufacturer, and the parameters provided by the manufacturer are based on the results of the experiment when spraying water. Due to the different components of various pesticides , the density is also different. According to the knowledge of fluid mechanics, under the condition of the same nozzle aperture and the same pressure, the density is an important factor affecting the flow rate. Therefore, the same nozzle has different densities due to the different pesticides sprayed. Under the same pressure, the flow rate is also different. If the parameters are selected according to the parameter table provided by the manufacturer, it is obviously unscientific, and there will undoubtedly be overspray or underspray phenomenon. Overspray will cause excessive use of pesticides and cause environmental pollution. Pollution and pesticide waste, under-spraying leads to insufficient dosage, which fails to achieve the purpose of pest control and disease treatment. Both are difficult to achieve the so-called "precision spraying", and the effect of "reducing dosage and increasing efficiency" is also open to question

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