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Automatic irrigation device and automatic irrigation method of intercropping farmland

An automatic irrigation and farmland technology, applied in the agricultural field, can solve the problems of low water use efficiency in farmland, waste of irrigation water for crops that do not need water, and out-of-synchronization of irrigation

Inactive Publication Date: 2017-02-01
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to solve the asynchronous irrigation of intercropping crops in salinized areas. Irrigation water for water-hungry crops is wasted, resulting in inefficient use of water on farmland

Method used

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  • Automatic irrigation device and automatic irrigation method of intercropping farmland
  • Automatic irrigation device and automatic irrigation method of intercropping farmland
  • Automatic irrigation device and automatic irrigation method of intercropping farmland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136]An automatic irrigation method for intercropping farmland, characterized in that it specifically comprises the following steps:

[0137] (1) Establishment of database

[0138] Collect the crop coefficient and root depth of the main intercropping crops at different growth stages, and establish crop information including the crop coefficient and root depth data of the first crop at different growth stages, and the crop coefficient and root depth data of the second crop at different growth stages database;

[0139] Measure the soil bulk density of farmland soil at different depths, and establish a soil information database containing soil bulk density;

[0140] (2) Data collection

[0141] On the intercropping farmland where the first crop and the second crop are planted, the data of the root zone soil moisture content of the first crop, the data of the root zone soil moisture content of the second crop, the area data of the first crop, and the data of the second crop are...

Embodiment 2

[0175] Concrete method is identical with embodiment 1, and difference is only, after calculating the irrigation amount that actually needs according to soil water balance principle, also comprises the following steps:

[0176] According to the actual required irrigation amount, the Bayesian analysis model is coupled with the soil water balance formula, and the Gibbs sampling analysis is used to obtain the 95% confidence interval of the irrigation amount; the average value, maximum value and minimum value of the irrigation amount in the determination stage value;

[0177] Substitute the confidence interval of the obtained irrigation amount into the soil water balance equation for reverse calculation to obtain the soil moisture content in the root zone of the first crop and the soil moisture content in the root zone of the second crop, and the soil moisture content in the root zone accounts for 80-90% The irrigation amount of the field water capacity is the optimal irrigation am...

Embodiment 3

[0180] (1) Choose crops to plant

[0181] On the intercropping farmland, the first crop and the second crop are planted, wherein, the first crop is a high-stalk plant, specifically corn, and the second crop is a low-stalk plant, such as melons, fruits and vegetables, specifically a tomato, which utilizes the formed crop The compound population increases the interception and absorption of solar energy, and at the same time, the high-stalk crops in the wide-narrow row intercropping or strip intercropping have a certain edge row advantage to improve crop yield. In this embodiment, the first crop is corn (Zhongdi 77) as an example, and the second crop is tomato (Tunhe 48) as an example.

[0182] (2) Irrigation before planting and sowing

[0183] Plant according to the principle of narrow rows for tall crops and wide rows for dwarf crops, such as the planting mode of 2 rows of corn and 4 rows of tomato. After the tomato seedlings are transplanted, in order to protect the seedling...

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Abstract

The invention provides an automatic irrigation device and an automatic irrigation method of an intercropping farmland. In an intercropping planting farmland, a data acquisition module, a control module, an irrigation device communicated with a water supply system, and an irrigation executing device for controlling the opening and closing of the irrigation device are arranged, and basic theories and models of soil physical properties, crop water demands, soil water dynamics, crop root growth and the like are considered; based on a soil water balance method and Bayesian analysis, automatic irrigation is realized after water is not enough, and an irrigation amount range is determined; and a drip irrigation wetting body and two types of crop root systems are matched, and efficient water utilization is finally realized.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to an automatic irrigation device and an automatic irrigation method for intercropping farmland. Background technique [0002] Intercropping refers to the planting of two or more crops on the same piece of land, which is the intensification of crops in time and space. According to statistics, its contribution rate to increase production accounts for about 27% of the various agricultural technologies applied. Compared with monocropping, intercropping farmland radiation use efficiency, land use efficiency and land equivalent ratio are significantly improved, so intercropping plays an important role in my country's agricultural production, and its planting area exceeds 1 / 3 of the total planting area , and provide more than 50% of the grain, especially for the arid single-cooking system in the north, it has shouldered the dual task of increasing grain production and farmers' income...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/02A01G25/16
CPCA01G25/02A01G25/167
Inventor 李仙岳史海滨闫建文彭遵原龚雪文丁宗江张景俊郭宇孙亚楠
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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