Detecting device and detecting method for crop biomass

Abstract

The invention relates to crop growth detecting technology and discloses a detecting device and a detecting method for crop biomass. The detecting device comprises a bearing container, a power module, a plant height gathering module, a stem diameter gathering module, a clamping module and a data acquisition and analysis module, wherein the power module, the plant height gathering module, the stem diameter gathering module, the clamping module and the data acquisition and analysis module are respectively arranged on the bearing container. The power module supplies power for the whole device, the clamping module is used for clamping a sample to be detected, and the stem diameter gathering module and the plant height gathering module are respectively used for collecting stem diameter information and plant height information of the clamped sample to be detected and transmitting the information to the data acquisition and analysis module which conducts data processing and analysis and then building a theoretical and biomass prediction model. The plant height gathering module adopts a laser distance measuring sensor, and the stem diameter gathering module adopts a displacement sensor. The detecting device is flexible and portable, and can conduct rapid, free-damage and accurate measurement on crops such as naturally-grown wheat and rice with a plurality of stem on a single stem.

Description

technical field [0001] The invention relates to crop growth detection technology, in particular to a crop biomass detection device and method. Background technique [0002] Among the agronomic parameters observed in the field of crops, biomass (biomass), or phytomass specifically for plants, is an important indicator reflecting the growth status of crops, and is related to stress resistance, disease resistance, and final yield of plants. The so-called biomass refers to the weight of organic matter living in a unit area at a certain time. In the narrow sense, biomass only refers to weight, which can be fresh weight or dry weight, usually in kg / m 2 Or t / ha said. Crop biomass includes aboveground stems, leaves, flowers, fruits, seeds and underground roots or stems. In crop fine breeding, the biomass value of a single plant can help breeders understand the growth status and photosynthetic efficiency of the crop to obtain the dominant crop type; in the process of crop cultivati...

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Problems solved by technology

This traditional crop biomass measurement method is accurate and reliable, but it needs to plant a large number of crops to meet the experimental needs of crops at different growth stages, and it is destructive and cannot be used in the breeding process

[0004] 2. By applying a sweeping electric field to the measured crop sample located in a parallel plate capacitor, measure the dielectric properties of the crop under certain temperature and humidity conditions, and establish a correlation model between the dielectric constant, attenuation coefficient and crop biomass, To complete the detection of crop biomass; this measurement method is mainly used for indoor or field experimental research, applying a sweeping electric field to the tested crops, and detecting the biomass of a single crop or a small group of crops by measuring the dielectric properties of the crops , but the measurement device needs to ensure certain measurement temperature and humidity conditions, so the device and method are difficult to meet the detection requirements of crop biomass in the natural growth state of the field

[0005] 3. The method of measuring living biomass of crops is to plant the sample to be tested in a special container, and the container is placed on a weighing device, which can achieve the purpose of continuously tracking and studying the dynamic changes of crop biomass. This method is mainly suitable for indoor scientific experiments For research, the samples to be tested are artificially planted in specific containers for continuous monitoring research, and are used to detect the growth changes of individual plant biomass; therefore, this measurement device cannot be used for biomass measurement of field and large-scale growing crops

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