Zoning optimization method of crop irrigation system in shallow groundwater buried area

A zoning optimization and groundwater technology, which is applied in the agricultural field to save time and money, improve soil water use, and improve crop production efficiency.

Active Publication Date: 2021-08-03
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
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  • Claims
  • Application Information

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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

Method used

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  • Zoning optimization method of crop irrigation system in shallow groundwater buried area
  • Zoning optimization method of crop irrigation system in shallow groundwater buried area
  • Zoning optimization method of crop irrigation system in shallow groundwater 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 partition optimization method for crop irrigation systems in shallow groundwater buried areas. It includes: obtaining local historical data; using the Aquacrop model based on local historical data to obtain the first simulated yield and simulated water consumption at each growth stage of crops and wheat under different irrigation systems in different regions, and the set groundwater depth is used as the divisional boundary in different regions ;According to all the first simulated yields and the corresponding simulated water consumption in each growth stage, the second simulated yield and the stage sensitivity coefficients of different growth stages of all regional crops under each water production function model are obtained by using the set multiple water production function models or index; calculate the coefficient of determination between the first simulated yield and the second simulated yield; use the stage sensitivity coefficient or index and the determination coefficient to determine the best water production function model corresponding to each region; put the stage under the best water production function model The sensitivity coefficient or index is used as the irrigation decision-making variable, and combined with setting the irrigation quota, the irrigation system is obtained by using Aquacrop.

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 Patents(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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