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Methods for calculating effective utilization coefficient of irrigation water in vine-with-melon irrigation area

A technology that utilizes coefficients and grows vines to form melons. It is applied in computing, data processing applications, instruments, etc., and can solve problems such as difficulty in determining factors, insufficient accumulation of data in irrigation areas, and imperfect monitoring systems for water intake.

Inactive Publication Date: 2017-07-07
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The theories and concepts of these indicators are rigorous and reasonable, but there are some problems in the process of application in my country. Due to the insufficient accumulation of data in irrigation areas and the imperfect monitoring system of water intake, some elements in the indicators are difficult to determine

Method used

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  • Methods for calculating effective utilization coefficient of irrigation water in vine-with-melon irrigation area
  • Methods for calculating effective utilization coefficient of irrigation water in vine-with-melon irrigation area
  • Methods for calculating effective utilization coefficient of irrigation water in vine-with-melon irrigation area

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Embodiment Construction

[0051] Below in conjunction with accompanying drawing and embodiment, the present invention is further described to the specific embodiment of the present invention, the water balance relation of long-vine knotted melon irrigation area sees figure 1 .

[0052] The relationship of water balance in the vine-fruited melon irrigation area is as follows: figure 1 ; figure 1 Medium W R-P The amount of water to supplement the pond weir for the reservoir, m 3 ;W R-F is the amount of water directly entering the field from the reservoir, m 3 ;W P is the inflow impounded by the pond weir, m 3 ;E P is the water surface evaporation of pond weir, m 3 ;S P is the seepage loss of pond weir, m 3 ;F P is the outflow of the pond weir, that is, the water volume exceeding the maximum capacity of the pond weir, m 3 ; ΔW P is the capacity change of pond and weir, m 3 ;W P-F is the water supply for pond weir irrigation, m 3 ; ΔW i is the amount of water lost in the process of water t...

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Abstract

The invention discloses a method for calculating an effective utilization coefficient of irrigation water in a vine-with-melon irrigation area. According to the method, on the basis of the water balance principle as well as characteristics of various water source project types, complex multi-water-source multi-user dispatching, and vertically and horizontally staggered subareas for water transport and distribution, small-reservoir water level observation is carried out and an irrigation water amount provided by retaining and rainfall as well as overland runoffs are calculated, so that the accuracy of calculation of sgross irrigation water amount of the irrigation area can be improved. In addition, the invention also discloses another method for calculating an effective utilization coefficient of irrigation water in a vine-with-melon irrigation area. Losses of all water sources during the conveying process are considered respectively and then weighting is carried out to obtain an effective utilization coefficient of irrigation water in an irrigation area. The two kinds of methods can be applied to large and medium-sized irrigation areas with complex water sources, thereby providing the basis for promoting vigorously agricultural water saving and water-saving irrigation.

Description

technical field [0001] The invention relates to the technical field of irrigation water efficiency evaluation, in particular to two methods for calculating the effective utilization coefficient of irrigation water in irrigation areas of vine-shaped melons. Background technique [0002] The effective utilization coefficient of irrigation water is an important assessment index for my country's most stringent water resources management system and the construction of a water-saving society. The effective utilization coefficient of irrigation water refers to the ratio of the amount of water that can be used by crops into the field in a certain period of time and the total amount of irrigation water withdrawn from the water source, which can reflect the comprehensive utilization of rainfall, soil water, groundwater, and surface water in the irrigation area. The "Thirteenth Five-Year Plan for Water Conservancy Reform and Development" proposes that by 2020, the effective utilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q50/02
Inventor 邵东国尹希陈述李浩鑫
Owner WUHAN UNIV
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