Method for measuring and evaluating spatial droplet deposition based on plant canopy porosity

A technology of sedimentation volume and porosity, which is applied in the field of plant protection spraying, can solve the problems of complex and changeable internal structure of plant canopy, mutual shielding effect of plants, and inaccurate deposition results, so as to avoid errors and overcome inaccurate data.

Active Publication Date: 2019-03-19
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology

These simplified models can replace plants to measure the amount of deposition to a certain extent, but the internal structure of the plant canopy is complex and changeable, and there are mutual shading effects between plants, so the deposition results cannot be obtained accurately by using these methods

Method used

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  • Method for measuring and evaluating spatial droplet deposition based on plant canopy porosity
  • Method for measuring and evaluating spatial droplet deposition based on plant canopy porosity
  • Method for measuring and evaluating spatial droplet deposition based on plant canopy porosity

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific embodiments, and the examples of specific embodiments are only illustrative, not intended to limit the scope of the present invention and its application.

[0030] Such as figure 1 As shown, the present invention provides a kind of space droplet deposition measurement and evaluation method based on plant canopy porosity, comprising the following steps:

[0031] The spraying system is a door-type spray stand 6, which adopts a spray rod spraying method, and includes a spray nozzle 9, a flow meter 7, a solenoid valve 8, a diaphragm pump 3, a medicine box 1 and a hose 2, etc., and the spray nozzle 9 It is a fan-shaped spray nozzle, which sprays even medicinal liquid, and the spray range is larger than the line spacing of the plants; the flowmeter 7 is used for real-time monitoring of the spray flow, and feedback is made to facilitate real-time adjustment and ensure flow stability; the solenoi...

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Abstract

The invention relates to a method for measuring and evaluating spatial droplet deposition based on plant canopy porosity. According to the method, a plant canopy is divided into plural layers, separators are arranged between adjacent layers; water sensitive paper is placed uniformly on the separators as much as possible; a plant runs through a spray frame with constant flow rate at a fixed speed,the deposition data of the water sensitive paper is calculated and analyzed to obtain the deposition of droplets in unit area; the deposition is multiplied with the areas of the separators to obtain the total deposition of the n separator, which is penetration in the n layer of the plant canopy, and the difference of deposition between the (n-1) separator and the n separator is the deposition of the n plant canopy, which reflects the deposition situation of the droplets in the n plant canopy, and the percentage of the total deposition of the n separator in the total deposition of the (n-1) separator reflects the penetration situation of the droplets in the plant canopy, and the relationship of the porosity and deposition percentage of each layer can be obtained by utilizing Gaussian process regression, and important accordance is provided to research of penetration and deposition distribution of droplets inside the plant canopy.

Description

technical field [0001] The invention belongs to the technical field of plant protection spraying, and relates to a method for measuring and evaluating the deposition amount of space droplets based on the porosity of a plant canopy, and an evaluation method for the corresponding relationship between the porosity and the deposition amount. technical background [0002] For the measurement of spray deposition on the plant canopy, Khot et al. proposed to arrange water-sensitive paper on the leaves of the plant canopy. This method usually requires parameter values ​​such as leaf area index to calculate, but the shape of the plant canopy is variable. The measurement of leaf area index is difficult, and the desired result cannot be obtained. After searching the existing technical literature, it is found that the invention patent "Size-Variable Droplet Space Deposition Test Device and Method", patent application number 201310410038.1 discloses a size-variable space test device, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/04G01N15/08
CPCG01N15/04G01N15/088
Inventor 刘雪美李幻刘兴华宋来其李扬
Owner SHANDONG AGRICULTURAL UNIVERSITY
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