Device and method for measuring crop biomass

The technology of a measuring device and a measuring method is applied in the field of rapid measurement of crop biomass, which can solve the problems of wasting manpower, taking a long time, unable to measure the biomass of crops, etc., and achieving the effect of being simple and portable, and saving manpower.

Active Publication Date: 2011-08-31
BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
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Problems solved by technology

[0004] The existing technology can measure the biomass of crops, but it has the following defects: (1) the biomass of crops cannot be measured in vivo; (2) the measurement process is irreversibly destructive; (3) the measurement sample needs to be Drying process takes a long time; (4) The harvesting process wastes a lot of manpower; (5) Because it is destructive sampling, it is not suitable for dynamic observation research in time

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  • Device and method for measuring crop biomass
  • Device and method for measuring crop biomass
  • Device and method for measuring crop biomass

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Embodiment Construction

[0048] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0049] The device and method for measuring in vivo biomass of crops based on dielectric spectrum characteristics provided by the present invention have a measuring mechanism: the state of hydrogen atoms in plants is directly related to the biomass. The hydrogen element in the form of ions has a linear relationship with the water in the plant; the hydrogen content after deducting the water can directly reflect the dry weight of the plant, that is, its organic component. Dielectric properties refer to the response of bound charges in a molecule to an applied electric field. The dielectric parameters of substances are not constant values, they are affected by factors such as...

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Abstract

The present invention discloses a device and a method for measuring crop biomass. The crop biomass is measured by applying frequency sweep electric field to a to-be-measured crop sample in a parallel plate capacitor for measuring the dielectric property of the crop sample at a certain temperature and humidity, and by establishing a correlative model of dielectric constant, attenuation coefficient and the crop biomass. The device and the method provided in the invention can rapidly measure crop biomass per plant or of a plurality of plants without reaping the crop. The device is simple and portable, and is suitable for field application, and remarkably saves manpower, material resources and time, and furthermore, the device can be reformed into an on-line continuous monitoring system of the crop biomass for carrying out a continuous monitoring of field crop biomass.

Description

technical field [0001] The invention relates to a fast measurement method of crop biomass, in particular to a fast measurement method of crop biomass based on dielectric spectrum. Background technique [0002] Biomass, or phytomass specifically for plants, refers to the total amount of organic matter (dry weight) or fresh weight that exists in a unit area at a certain time, usually in kg / m 2 Or t / ha said. The determination of biomass is of great significance in the process of crop cultivation and breeding. In the fine breeding of crops, the biomass value of a single plant can help breeders understand the growth state and photosynthetic efficiency of the crop to obtain the dominant crop type; in the process of crop cultivation, through the biomass measurement of the crop, the crop can be inferred Growth potential, timely decision-making on fertilization and irrigation. [0003] Existing biomass measurement method is harvesting method (referring to non-patent literature: th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G7/00
Inventor 王成侯瑞锋乔晓军朱大洲毕昆
Owner BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
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