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Monthly-scale net input acquisition system for watershed agricultural source nitrogen

A technology for acquiring systems and input quantities, applied in the fields of resources, data processing applications, instruments, etc., can solve the problem of difficulty in ensuring the accuracy of the estimation of nitrogen pollution from agricultural sources, and achieve convenient calculation, reduction of dependence, flexible conversion and use. Effect

Active Publication Date: 2022-03-25
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a monthly scale of agricultural source nitrogen for watersheds in view of the problem that it is difficult to ensure the accuracy of the estimation of agricultural source nitrogen pollution in the prior art Net Input Acquisition System

Method used

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  • Monthly-scale net input acquisition system for watershed agricultural source nitrogen
  • Monthly-scale net input acquisition system for watershed agricultural source nitrogen
  • Monthly-scale net input acquisition system for watershed agricultural source nitrogen

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specific Embodiment approach 1

[0022] Specific implementation mode one: refer to figure 1 Specifically explain this embodiment, a monthly-scale net input acquisition system for watershed agricultural source nitrogen described in this embodiment, fertilizer application nitrogen analysis module, aquatic excretion nitrogen analysis module, crop fixed nitrogen analysis module, and seed nitrogen analysis module , food / feed nitrogen analysis module and agricultural source nitrogen monthly scale net input analysis module;

[0023] The fertilizer application nitrogen analysis module is used to obtain the monthly scale input amount N of chemical fertilizer application nitrogen fer,j ;

[0024] The aquatic excretion nitrogen analysis module is used to obtain the monthly scale input amount N of aquatic excretion nitrogen aq,j ;

[0025] The crop fixed nitrogen analysis module is used to obtain the monthly scale input amount N of crop fixed nitrogen cro,j ;

[0026] The seed nitrogen analysis module is used to obt...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment is a further description of Embodiment 1. The difference between this Embodiment and Embodiment 1 is that the monthly scale input amount of fertilizer application nitrogen is expressed as:

[0033]

[0034] N fer =NF+CF r

[0035] In the formula, N fer,j is the nitrogen input amount of chemical fertilizer applied per unit area of ​​the administrative region in month j, SA i is the annual sowing area of ​​crop i, n is the number of types of crops, FAR i,j is the proportion coefficient of the amount of chemical fertilizer applied to crop i in the total amount of chemical fertilizer in month j, a is the nitrogen correction coefficient, TSA is the total planted area of ​​the crop in the year, AA is the total area of ​​the administrative area, N fer is the annual nitrogen input amount of chemical fertilizer, NF is the annual converted amount of nitrogen fertilizer, CF is the annual converted amount of compound fertilizer, and r is the prop...

specific Embodiment approach 3

[0036] Embodiment 3: This embodiment is a further description of Embodiment 2. The difference between this Embodiment and Embodiment 2 is that the monthly scale input of nitrogen excreted by aquatic products is expressed as:

[0037]

[0038] In the formula, N aq,j is the nitrogen input amount excreted by aquatic products per unit area of ​​the administrative region in month j, and AN is the nitrogen excretion coefficient of aquatic products.

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Abstract

The invention discloses a monthly-scale net input acquisition system for drainage basin agricultural source nitrogen, relates to the crossing field of an environmental system simulation prediction technology and a computer technology, and aims to solve the problem that the estimation accuracy of the agricultural source nitrogen pollution amount is difficult to ensure in the prior art. Comprising a chemical fertilizer application nitrogen analysis module, an aquatic product excretion nitrogen analysis module, a crop fixed nitrogen analysis module, a seed nitrogen analysis module, a food / feed nitrogen analysis module and an agricultural source nitrogen monthly scale net input analysis module. According to the parameterization method for monthly-scale distribution of input quantities of various agricultural source nitrogen, reasonable distribution of the nitrogen input quantities is realized, and calculation can be directly performed by using a formula with set parameters, so that the whole process can be realized through a computer programming technology, and refined, programmed and convenient calculation of drainage basin nitrogen input is realized.

Description

technical field [0001] The invention relates to the interdisciplinary field of environmental system simulation prediction technology and computer technology, and specifically relates to a monthly-scale net input analysis system for agricultural source nitrogen in watersheds. Background technique [0002] With the rapid development of our country's social economy, the nitrogen load generated by agricultural activities has risen sharply. As one of the main elements that affect the function of the watershed ecosystem, when nitrogen is input excessively, it will lead to the imbalance of nitrogen cycle balance in the watershed, causing environmental problems such as groundwater nitrate pollution and water eutrophication. At present, agricultural activities have become the main cause of excessive nitrogen input in most watersheds in my country. Therefore, it is particularly important to accurately capture the spatiotemporal distribution of nitrogen pollution caused by agricultural...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02G06Q50/26
CPCG06Q10/06393G06Q10/06313G06Q50/02G06Q50/26
Inventor 詹巍田禹庄宇李炎邹亚男马德龙
Owner HARBIN INST OF TECH
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