Multi-dimensional critical regulation and control method for efficiently utilizing water and fertilizers on farmlands

A multi-dimensional technology for farmland water and fertilizer, applied in fertilization methods, agriculture, applications, etc., can solve the problem of lack of consideration of the impact of water and fertilizer utilization, and achieve the effect of improving water and fertilizer utilization efficiency

Inactive Publication Date: 2014-08-06
WUHAN UNIV
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Problems solved by technology

However, these technologies are only used to control the water level and quality of farmland drainage, without considering the impact of controlling drainage depth on crop growth, water and f

Method used

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  • Multi-dimensional critical regulation and control method for efficiently utilizing water and fertilizers on farmlands
  • Multi-dimensional critical regulation and control method for efficiently utilizing water and fertilizers on farmlands
  • Multi-dimensional critical regulation and control method for efficiently utilizing water and fertilizers on farmlands

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] See figure 1 , the present invention comprises the steps of:

[0038] Step a, build regional spatial attribute database, see figure 2 .

[0039] Conduct on-site surveys, field surveys and analysis, and experimental observations on the farmland areas to be regulated, obtain soil type data, drainage system design data, land use data, and meteorological data, and construct a regional spatial attribute database of the farmland to be regulated. Soil type data can be obtained through soil sampling and testing, drainage system design data can be obtained through field measurement, land use data can be obtained through field investigation and analysis, and meteorological data can be obtained from weather station observation data.

[0040] Step b, based on the data of the water-fertilizer coupling irrigation test and the control drainage test...

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Abstract

The invention provides a multi-dimensional critical regulation and control method for efficiently utilizing water and fertilizers on farmlands. To achieve the targets of water saving, fertilizer saving, high yield and pollution control, the multi-dimensional critical regulation and control indexes of water-saving irrigation, controlled drainage and reasonable fertilization are established on the basis of farmland tests and field reconnaissance data in combination with relevant theories of water and fertilizer coupling irrigation, crop growth, controlled drainage, critical regulation and control and the like, so that the multi-dimensional critical regulation and control for efficient utilization of water and fertilizers on farmlands are realized. The method can be applied to coordinated management of water and fertilizer coupling irrigation and controlled drainage on farmlands, the water-fertilizer utilization efficiency is increased, and the problems of potential resource waste and environmental pollution risk in the management of agriculture and water conservancy subsectors are solved.

Description

technical field [0001] The invention belongs to the technical field of regulation and control of utilization rate of farmland water and fertilizer, and in particular relates to a multi-dimensional critical regulation method for efficient utilization of farmland water and fertilizer. Background technique [0002] my country's farmland irrigation water accounts for about 62% of the country's total water use. Among them, rice is the main food crop in my country. In 2013, the sown area was about 30.48 million hectares, and the output accounted for about 40% of the country's total grain output. With population growth, accelerated urbanization and frequent extreme weather, food security, drought and flood disasters, and water pollution have become key issues restricting the sustainable development of my country's economy and society. my country's annual agricultural water shortage reaches 30 billion m 3 , but the irrigation water use coefficient is 0.5, and the irrigation water p...

Claims

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Application Information

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IPC IPC(8): A01C21/00
Inventor 邵东国陈述刘欢欢孙春敏谭学志
Owner WUHAN UNIV
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