Method for regulating and controlling utilization efficiency of irrigation water in salting irrigation area
A technology for irrigating water and irrigation areas, applied in water conservation, data processing applications, instruments, etc., which can solve the problems of many factors affecting the field test cycle, difficulty in controlling the utilization efficiency of irrigation water, and high professional scientific knowledge requirements for hardware configuration users. problems, to achieve the effect of saving manpower and material resources, saving irrigation costs, and efficient utilization
Active Publication Date: 2019-09-03
XIAN UNIV OF TECH
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[0005] The purpose of the present invention is to provide a kind of regulation and control method of the irrigation water utilization efficiency of saline irrigation area, solve the problem existing in the prior art because of the long field test period and the many influencing factors of the field test, and the hardware configuration of the computer system by the numerical simulation model And it is difficult to control the efficiency of irrigation water use due to the high requirements for the user's professional scientific knowledge
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[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0042] The regulation and control method of the irrigation water utilization efficiency of a kind of saline irrigation area of the present invention, such as figure 1 shown. This embodiment is carried out in the saline irrigation area in Korla, Xinjiang, and the main steps are as follows:
[0043] Step 1: The Shihezi area of Xinjiang Uygur Autonomous Region lacks fresh water resources but is rich in shallow brackish water. The area of saline-alkali land is large and the light and heat resources are sufficient. It is suitable for planting cotton and other crops with strong salt and alkali tolerance. The irrigation water depth required for cotton growth and development in local conventional cotton fields is generally 500 mm.
[0044] In the Anjihai irrigation area in Shihezi area, cotton with strong salt and alkali resistance is planted...
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The invention discloses a method for regulating and controlling the utilization efficiency of irrigation water in a salinized irrigation area, which specifically comprises the following steps of: 1, setting at least three groups of root area salt leaching water depths in combination with the irrigation water depth required by crop growth and development under the conventional planting condition ofthe salinized irrigation area; 2, measuring conductivity, a salt tolerance threshold value and a production reduction coefficient, and determining the production reduction degree; step 3, determiningthe unit irrigation water utilization efficiency according to the leaching ratio and the production reduction degree; 4, determining the relation between the leaching proportion and the correspondingunit irrigation water utilization efficiency, and obtaining a fitting coefficient; 5, determining the maximum value and the optimal leaching ratio of the unit irrigation water utilization efficiencyaccording to the fitting coefficient; and 6, determining the optimal total irrigation water depth according to the optimal leaching ratio and the irrigation water depth. The method solves the problemsthat the current salting irrigation area is long in irrigation water utilization efficiency regulation and control period, large in manpower and material resource consumption, high in requirement foroperators and the like, and is a novel intelligent water-saving irrigation method which is wide in application prospect.
Description
technical field [0001] The invention belongs to the technical field of agricultural water and soil engineering, and relates to a method for regulating and controlling the utilization efficiency of irrigation water in saline irrigation areas. Background technique [0002] Under the background of soil salinization and shortage of fresh water resources in arid areas, higher soil salinity in irrigated areas or irrigation with brackish water will cause different degrees of water and salt stress in the growth and development of crops, thus affecting crop growth and yield improvement , thereby reducing the efficiency of irrigation water use. By adopting a reasonable irrigation system, the soil water-salt distribution and leaching of salt can be effectively regulated to alleviate the adverse effects of water-salt stress on crop growth, yield, and irrigation water use efficiency. [0003] Researchers have conducted a lot of research on crop irrigation systems in saline irrigation ar...
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Login to View More IPC IPC(8): G06Q50/02G06Q50/06G06Q10/06
CPCG06Q10/0631G06Q50/02G06Q50/06Y02A20/00
Inventor 宁松瑞周蓓蓓王全九
Owner XIAN UNIV OF TECH