Subarea optimization method for crop irrigation system in underground water shallow-buried area

A technology for zoning optimization and groundwater application in the agricultural field to achieve the effect of increasing soil water use, reducing irrigation, and not being restricted by region

Active Publication Date: 2019-09-27
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

In areas with large spatial variations in groundwater depth in shallow groundwater burial areas, crop irrigation measures are mostly obtained from field experiments under groundwater level conditions at test sites in specific years, and there are great limitations in the promotion and application of relevant results

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  • Subarea optimization method for crop irrigation system in underground water shallow-buried area
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  • Subarea optimization method for crop irrigation system in underground water shallow-buried area

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Embodiment Construction

[0034] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can understand the present invention. However, it should be clear that the embodiments described below are only some, not all, embodiments of the present invention. Without departing from the spirit and scope of the present invention defined and determined by the appended claims, all other embodiments obtained by those skilled in the art without any creative effort shall fall within the protection scope of the present invention.

[0035] Such as figure 1 As shown, the zoning optimization method of the crop irrigation system in the shallow groundwater buried area includes:

[0036] Obtain local historical data;

[0037] Using the Aquacrop model based on local historical data to obtain the first simulated yield and simulated water consumption of each growth stage under different crop irrigation systems in dif...

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Abstract

The invention discloses a subarea optimization method for a crop irrigation system in an underground water shallow-buried area. The method comprises the steps of obtaining local historical data; based on the local historical data, utilizing an Aquacrop model to obtain first simulation yield and simulation water consumption of each growth stage of crop wheat in different areas under different set irrigation systems, wherein different areas take set groundwater burial depths as partition boundaries; according to all the first simulated yields and the simulated water consumption of the corresponding growth stages, acquiring second simulated yields of all the regional crops under the water production function models and stage sensitivity coefficients or indexes of the different growth stages by adopting the set multiple water production function models; calculating a decision coefficient between the first simulated yield and the second simulated yield; determining an optimal moisture production function model corresponding to each region by adopting a phase sensitive coefficient or an index and a decision coefficient; and taking the stage sensitive coefficient or index under the optimal moisture production function model as an irrigation decision variable, and obtaining an irrigation system by using Aquacrop in combination with a set irrigation quota.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a partition optimization method for crop irrigation systems in shallow groundwater buried areas. Background technique [0002] Shallow groundwater buried areas include the Hetao Irrigation Area, the Northwest Shandong Plain, the Jianghan Plain, the Yellow River Delta, and the Yellow River Diversion Irrigation Area in the Yinchuan Plain. [0003] In shallow groundwater burial areas, groundwater recharges the vadose zone soil through capillary rise and transforms into soil water that can be used by crops. The degree of interaction between soil water and groundwater varies with groundwater burial depth. In areas with large spatial variations in groundwater depth in shallow groundwater burial areas, crop irrigation measures are mostly obtained from field experiments under groundwater level conditions at test sites in specific years, and there are great limitations in the promotion and appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02
CPCG06Q10/04G06Q10/067G06Q50/02
Inventor 彭致功张宝忠蔡甲冰陈鹤魏征
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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