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A method for optimizing the layout of ridges and furrows in sloping farmland oriented to the water demand process of crops

A technology for layout optimization and sloping cultivated land, which is applied in the agricultural field and can solve problems such as shortage

Active Publication Date: 2021-02-02
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Application Information

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Problems solved by technology

Among them, the layout of ridges and furrows is an important measure for rainfed agriculture on sloping farmland. However, most of the current research focuses on reducing soil erosion and controlling non-point source pollution. There is a lack of ridge and furrow layout schemes that fully utilize rainwater resources based on the water demand process of crops. Research

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  • A method for optimizing the layout of ridges and furrows in sloping farmland oriented to the water demand process of crops
  • A method for optimizing the layout of ridges and furrows in sloping farmland oriented to the water demand process of crops
  • A method for optimizing the layout of ridges and furrows in sloping farmland oriented to the water demand process of crops

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Embodiment Construction

[0030] In the following detailed description, certain exemplary embodiments of the present invention are shown and described, simply by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature, and not restrictive.

[0031] A method for optimizing the layout of ridges and furrows on sloping farmland oriented to the water demand process of crops includes the following steps:

[0032] 1: Construct the water balance model of sloping farmland.

[0033] According to the principle of water balance, the water cycle formula of slope farmland is:

[0034] P=E+I+F+WD (2)

[0035] Among them, P is the net precipitation of sloping farmland, mm; E is the evapotranspiration of farmland during the precipitation period, mm; I is the infiltration of sloping ...

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Abstract

The invention discloses a method for optimizing the layout of ridges and furrows on sloping farmland facing the process of crop water demand. Firstly, according to the precipitation data and crop growth period, the typical dry year of crops is determined, and then according to the crop water demand, evaporation data and precipitation data, the key field times are determined. Precipitation, based on this, combined with the water balance formula of sloping farmland, compares the relationship between the maximum value of storage flow in theoretical ridges and valleys and key events, infiltration and evaporation during rainfall, and then determines the parameters related to ridge layout. This method fully considers crops Water demand, focusing on the precipitation characteristics of crops in dry years, can significantly improve the utilization rate of rainwater in arid and semi-arid areas and increase crop yields.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for optimizing the layout of ridges and furrows on sloping farmland oriented to the water demand process of crops. Background technique [0002] Under the influence of climate change and human activities, extreme rainfall events occur frequently, causing great uncertainty to the production of rainfed agriculture. At the same time, the area of ​​sloping farmland in my country accounts for about 1 / 3 of the country's arable land area, and most of the sloping farmland cannot be irrigated due to terrain and other reasons. Therefore, making full use of rainwater resources is a hot spot in agricultural research on sloping farmland. Researching widely. Among them, the layout of ridges and furrows is an important measure for rainfed agriculture on sloping farmland. However, most of the current research focuses on reducing soil erosion and controlling non-point source pollut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04A01G2/00
CPCA01G2/00G06Q10/043
Inventor 秦天玲严登华刘姗姗史婉丽孙从武吕振豫
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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