Method for determining frost prevention action area of agricultural frost prevention machine
A technology for the area of action and anti-frost machine, which is applied in the field of determining the anti-frost area of agricultural anti-frost machines, which can solve the problems of resource waste, poor effect, time-consuming and laborious, etc., and achieve the effect of accurate calculation
Active Publication Date: 2016-11-09
JIANGSU UNIV
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Problems solved by technology
Conventional frost damage prevention and control methods such as smoking, covering, irrigation, etc., are ineffective, time-consuming and labor-intensive, and will cause environmental pollution or waste of resources
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[0024] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0025] Take the anti-frost machine model WT3000, the installation height is 6.5m, and the installation inclination angle is 15°, which is applied to anti-frost in tea gardens as an example.
[0026] figure 1 It is the shape diagram of the wind speed distribution of the anti-frost machine of the present invention. The shape is flat pear shape, the wind speed is symmetrically distributed, and the maximum effective distance L is 30m. With 0 as the origin, the horizontal distance is the X axis, the vertical distance is the Y axis, and the point i on the outermost curve of the pear-shaped upper end is (X i , Y i ).
[0027] Table 1 is that the present invention waits for wind speed measurement point (X i , Y i ), applying regression and curve fitting in SPSS, the fitting curve equation can be obtained:
[0028] f(x)=1.844-0.418x+0....
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The invention belongs to the field of plant protection and discloses a method for determining a frost prevention action area of an agricultural frost prevention machine. The method includes: determining an effective action longest distance L and a shortest distance l of the frost prevention machine, determining an equal-wind-speed measurement point (Xi, Yi), drawing a wind speed distribution diagram of the frost prevention machine, calculating an area formed by a curve and the X axis by curve fitting, and determining the frost prevention action area of the agricultural frost prevention machine in a swinging condition and a static condition. The method, taking an agricultural frost prevention machine WT3000 with an installation height being 6.5m and an installation inclination being 15 degrees for example, specifically includes that the effective action longest distance of the frost prevention machine is 25.62m, the shortest distance is 9.7m, and a wind speed distribution range is in a pear shape; when a swing angle is 60 degrees, the frost prevention action area is 554.907m<2>; when a fan swing angle is 90 degrees, the frost prevention action area is 702m<2>; when a swing angle is 120 degrees, the frost prevention action area is 849m<2>. According to the method, the frost prevention action area of the agricultural frost prevention machine in the swinging condition and the static condition can be determined, and effective frost prevention action area parameters are provided for optimal arrangement of a frost prevention machine group.
Description
technical field [0001] The invention belongs to the field of plant protection, and in particular relates to a method and technology for determining the anti-frost area of an agricultural anti-frost machine. Background technique [0002] In recent years, due to abnormal climate changes, cold springs have occurred frequently, seriously affecting the production and consumption of tea fruit industry, and has become one of the main limiting factors for the economic development of famous and high-quality tea fruits in the south of the Yangtze River. Taking Jiangsu and Zhejiang provinces as examples, there were several severe cold springs in a row from 2005 to 2014, and the frost damage area of tea trees reached 80,000 hectares per year, and the economic loss was about 1 billion yuan. Conventional frost damage control methods such as fumigation, covering, irrigation, etc. are ineffective, time-consuming and labor-intensive, and will cause environmental pollution or waste of res...
Claims
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IPC IPC(8): A01G13/06
CPCA01G13/06
Inventor 鹿永宗胡永光赵梦龙王升
Owner JIANGSU UNIV