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Crop hierarchical water requirement calculation method based on soil moisture variation

A soil moisture and calculation method technology, applied in the direction of calculation, general water supply conservation, instruments, etc., can solve problems such as unfavorable growth and development, production reduction, etc., and achieve the effect of saving water resources, improving utilization efficiency, and meeting water demand.

Active Publication Date: 2017-10-20
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The period of reproductive growth is often the critical period of water demand, such as the booting period of cereal crops, which is most sensitive to water shortage. Water shortage in this period is extremely unfavorable to growth and development, often resulting in a substantial reduction in production

Method used

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  • Crop hierarchical water requirement calculation method based on soil moisture variation
  • Crop hierarchical water requirement calculation method based on soil moisture variation
  • Crop hierarchical water requirement calculation method based on soil moisture variation

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Embodiment Construction

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0039] Such as figure 1 As shown, the embodiment of the present invention provides a method for calculating crop level water demand based on soil moisture changes, including the following steps:

[0040] Step 101, determine crop withering coefficient, field water capacity and saturated water content.

[0041] In this step, the determination of wilting coefficient, field water capacity and...

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Abstract

The invention provides a crop hierarchical water requirement calculation method based on soil moisture variation. The method comprises the following steps that the crop wilting coefficient, the field moisture capacity and the saturated water content are determined; a soil sample, a test pit and a crop are selected, and the soil sample and the crop are moved into the test pit to act as a crop experimental group; the irrigation experiment is performed on the crop experimental group according to the preset requirements until the end of the crop growth period, and the cumulative irrigation of the crop experimental group is calculated; and the crop hierarchical water requirement is calculated according to the cumulative irrigation of the crop experimental group. According to the crop hierarchical water requirement calculation method based on the soil moisture variation, the problems of inaccurate calculation and complex calculation process of the crop water requirement can be solved, and the hierarchical water requirement of different growth periods of the crop can be accurately calculated so that irrigation of different growth periods of the crop is facilitated, the water requirement of the crop can be met, the water resource can be saved, the utilization efficiency of the water resource can be enhanced and the basis can be provided for development and utilization and planning and deployment of the water resource.

Description

technical field [0001] The invention relates to the field of water resource demand forecasting, in particular to a crop-level water demand calculation method based on changes in soil moisture. Background technique [0002] Water is an essential growth factor for crops, and plays a vital role in plant photosynthesis, transpiration, and as a carrier to maintain plant life activities. Without water, plants cannot survive. Therefore, water is essential for agriculture. One of the substances plays a vital role in all stages of crop growth. [0003] Crop water demand refers to the amount of water consumed by crop growth and development. Crop water demand is an important part of agricultural water consumption and the main part of water consumption in the entire national economy. It is the basis for determining crop irrigation systems and regional irrigation water consumption. Basin planning, regional water conservancy planning, irrigation and drainage project planning, design and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/02G06Q50/06
CPCG06Q10/04G06Q50/02G06Q50/06Y02A20/152
Inventor 肖伟华侯保灯赵勇王建华田文凯李保琦王高旭黄亚刘佳王贺佳
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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