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Pesticide non-point source pollution simulation and evaluation method

A non-point source pollution and pesticide technology, applied in special data processing applications, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2017-05-31
NORTHWEST A & F UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to obtain an analytical solution, too many assumptions need to be set to simplify the initial and boundary conditions, water flow conditions, irrigation methods, and the physical and biochemical processes of pesticides, and the existing pesticide migration analysis models cannot explain these important factors interrelated process

Method used

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  • Pesticide non-point source pollution simulation and evaluation method
  • Pesticide non-point source pollution simulation and evaluation method
  • Pesticide non-point source pollution simulation and evaluation method

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The embodiment of the present invention provides a method for simulating and evaluating pesticide non-point source pollution, the method comprising:

[0032] The first step is to collect the meteorology, topography, soil, soil texture, crops, pesticide application (pesticide type, application amount, application time, application method), irrigation (irrigation amount, irrigation time, irrigation mode), leaf area index of the research area (LAI), hydrol...

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Abstract

The invention provides a pesticide non-point source pollution simulation and evaluation method and relates to the technical field of hydrology and environment. Generation, development and transportation process of pesticide non-point source pollution are taken into consideration, a dynamic simulation method of pesticide transportation and distribution of different crop lands suitable for loess hilly regions, considering change of crop water requirement and having physical mechanism is established, spatial and temporal distribution, runoff and erosion output of pesticide non-point source pollution under rainfall and irrigation condition are evaluated, and influence rules of different parameters (pesticide properties, application of pesticide, farming measures, hydrogeology, hydrodynamic conditions, hydraulic conductivity of soil and area infiltration and the like) on overland runoff, soil and transportation in groundwater of the pesticide are revealed. By the arrangement, scientific theoretical foundation and important data reference are provided for formulating scientific and reasonable application of pesticide, irrigation modes and non-point source pollution control measures for agricultural lands.

Description

technical field [0001] The invention relates to the technical field of hydrology and environment, in particular to a method for simulating and evaluating pesticide non-point source pollution. Background technique [0002] In recent years, as people pay more and more attention to the safety of water environment, the non-point source pollution of pesticides related to water environment has also attracted the attention of some scholars. Pesticide non-point source pollution is an important part of non-point source pollution in watersheds, and it is the most serious hazard to human health, water environment, soil and organisms. my country is the country with the largest amount of pesticide use in the world. According to statistics, the annual application of pesticides in China is more than 1.3 million tons, but the utilization rate is only about 30%. About 70% of the pesticides enter the soil, water, atmosphere and crops in the form of atmospheric deposition and rainwater erosio...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG06F2219/10G16Z99/00
Inventor 吴磊常奂宇马孝义
Owner NORTHWEST A & F UNIV
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