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A method and system for intelligently judging the water shortage status of dry crops

A water-deficient state, crop technology, applied in the field of crop monitoring

Active Publication Date: 2019-09-13
西安鱼跃于渊农业信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of suitable technical means, how to judge the water shortage status of crops in real time and quickly in daily agricultural management has always been in a technical vacancy

Method used

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  • A method and system for intelligently judging the water shortage status of dry crops
  • A method and system for intelligently judging the water shortage status of dry crops
  • A method and system for intelligently judging the water shortage status of dry crops

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Experimental program
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Effect test

Embodiment 1

[0078] The sampling frequency of the soil moisture sensor is set at 5-15 minutes / time, and the soil moisture content SM_h of each sensing point h is collected respectively;

[0079] Combining the two sets of data at the instant (t0) and the previous point (t0-1), calculate the soil moisture change rate SD_h at each time point, SD_h is a scalar;

[0080] Daily integration of the soil moisture time change rate SD_h at each measurement point h within the vertical dimension of the crop root system to obtain SD_h_DSum;

[0081] Normalize SD_h_DSum at the root depth of crops, CM_h(h), h=0,1,...L. The results show the relative contribution of soil moisture change at each vertical depth;

[0082] According to the results of CM_h(h), construct a two-dimensional map of "virtual root system";

[0083] To make a qualitative judgment of "crop water shortage state", when the two-dimensional map of the constructed "virtual root system" is an inverted cone (such as Figure 4 shown), it mea...

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Abstract

The invention relates to a method for intelligently determining the water shortage status of upland crops, which includes the following steps: S1. The sensor tube transmits the soil moisture data collected in real time to a remote terminal through a signal transmission device; S2. The remote terminal receives the signal transmission device Transfer the transmitted soil moisture data and create a two-dimensional virtual root system map; S3. The remote terminal determines the water shortage status of the crop based on the soil moisture data. The method for intelligently determining the water shortage status of upland crops of the present invention is suitable for qualitative and quantitative determination of the water shortage status of various upland crops growing in an unsaturated soil moisture environment. It has the characteristics of non-destructive, continuous monitoring, simple and fast deployment, and reliable results. The obtained evaluation results of crop water shortage status have important guiding significance for determining crop water requirements.

Description

technical field [0001] The invention relates to the field of crop monitoring, in particular to a method and system for intelligently judging the water shortage state of dry crops. Background technique [0002] In daily application, "water shortage stress" is often used to describe the growth and development status of dryland crops under drought conditions due to the inability to provide sufficient water supply due to low soil moisture content. Due to the lack of suitable technical means, how to judge the water shortage status of crops in real time and quickly in daily agricultural management has always been in a technical vacancy. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method and system for intelligently judging the water shortage state of dry crops in view of the deficiencies of the prior art. [0004] The technical scheme that the present invention solves the problems of the technologies described a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/246G01N33/245
Inventor 李政
Owner 西安鱼跃于渊农业信息技术有限公司