Pesticide application parameter decision method based on crop planting density and different growth periods

Abstract

The invention relates to a pesticide application parameter decision method based on crop planting density and different growth periods, and belongs to the technical field of plant protection. The method comprises the steps that according to parameters such as row spacing and plant spacing of crop planting, different growth periods and leaf characteristics of different layers, a planting and form parameter database of crops is built; the density degree of the crops is analyzed automatically through the database, and the leaf porosity of different positions is calculated. According to the calculated leaf porosity and the calculated sectional area of the different positions, the leaf surface area of the crops in a selected region is further calculated. According to the fog drop deposition density and the fog drop diameter which are required by fog machine operation quality standard requirements, the spray volume on the unit area is calculated, accordingly, the total spray amount of the computational region is calculated, and based on the testing of the variation relation between the air volume of an airflow auxiliary device and the leaf porosity of the different growth periods of the crops, the air volume which is required by airflow assistance is determined. The pesticide application parameter decision method can not only provide reference for airflow auxiliary spray parameter optimization, but also achieve automatic control of the airflow auxiliary spray process easily.

Description

technical field [0001] The invention relates to the field of plant protection technology, in particular to a method for decision-making of application parameters based on crop planting density and different growth stages, and is especially suitable for optimizing parameters related to airflow-assisted spraying in different growth stages of crops. Background technique [0002] Pesticide spraying is still the main method of pest and weed control at the present stage. my country uses a large amount of pesticides, but the effective utilization rate of pesticides is only 30%, resulting in serious waste of pesticides and environmental pollution. Plant protection machinery and pesticide application technology must be developed in the direction of precision, high efficiency, low volume and less pollution. Modern agronomy requires reasonable close planting to increase yield, but close planting crops grow to the middle and late stages, forming a canopy with high canopy density. Altho...

AI Technical Summary

Problems solved by technology

However, when users use auxiliary airflow for spraying operations, they often set the spray volume and air volume parameters based on experience, regardless of the planting method and morphological characteristics of the crops. The result is not that the deposition effect of the middle and lower layers of dense crops cannot meet the requirements, but It is the excessive use of medicinal liquid for sparse crops, resulting in serious waste of medicinal liquid

At the same time, the forced airflow and effective deposition of the airflow assist device are a pair of contradictions, and improper airflow penetration is also not conducive to the deposition of droplets on the leaf surface.

Images