A method for measuring the dormancy progress of strawberries in open fields using a near-infrared device
A near-infrared, strawberry technology, applied in measuring devices, material analysis by optical means, instruments, etc., can solve problems such as inability to dynamically observe, and achieve the effect of simple and fast detection process, objective results, and strong penetrating ability.
Active Publication Date: 2018-08-28
合肥田峰草莓有限公司
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Problems solved by technology
So far, the judgment of the dormancy process of strawberry is limited to the method of observing the size change of flower buds (leaf buds); however, this method can only roughly judge the early stage of dormancy ending, and cannot determine the dormancy process (dormant induction period, deep dormancy, etc.) period, dormancy release period) for dynamic observation, which is useful for clarifying the dormancy process of strawberries and regulating the amount of cooling required to increase yield and improve fruit quality
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Embodiment 1
[0023] Collecting NIR spectrum: Take the lateral root system and fibrous root system of appropriate length and divide them into 10 batches of strawberry root system samples, and put them into quartz sample cups respectively. The near-infrared spectrometer uses the diffuse reflectance of the integrating sphere to measure the samples, with a resolution of 8cm -1 , scan 64 times, scan range 12000~4000cm -1 , temperature 23-27°C, relative humidity 15%-20%; each batch of samples was reloaded and scanned 5 times to obtain the average spectrum, see figure 1 .
[0024] Preprocessing of NIR spectra: using first derivative, second derivative, multiplicative signal correction (MSC), vector normalization, maximum-minimum normalization and other methods to preprocess the spectrum respectively. Internal cross-validation coefficient of determination (R 2 ), corrected mean square error (RMSEC) and predicted mean square error (RMSEP) are comprehensive index evaluations. R 2 The closer to 1...
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The invention discloses a method for measuring the dormancy process of strawberry in open field by adopting a near-infrared device. The method comprises the following steps: using the data measured by an Abbe refractometer as a reference value, and combining with the PLS method in TQAnalyst 7.1 to establish the bound in strawberry root system NIR analysis model for the determination of water and free water; in the strawberry dormant season, the strawberry rhizosphere soil is dug regularly to expose the lateral root system and fibrous root system; the sample is prepared, placed in a quartz sample cup, and the sample is measured by integrating sphere diffuse reflectance, and analyzed by NIR The model analysis obtained the depth of strawberry dormancy. The detection process of the invention is simple and fast, the near-infrared light has strong penetrating ability and scattering effect, no pretreatment is required during detection, and it can penetrate glass, quartz and plastic packaging for direct detection, and does not use any chemical reagents , the results are more objective and accurate.
Description
technical field [0001] The invention relates to the technical field of plant root system observation, in particular to a method for measuring the dormancy process of open-field strawberries by using a near-infrared device. Background technique [0002] Strawberries in the open field need to undergo natural dormancy before they can germinate and bloom normally. Otherwise, even if suitable environmental conditions are given, they will not germinate and bloom. Sometimes even if they germinate, they will not be neat and the growth will be poor. [0003] The dormancy process of strawberry is directly related to the accumulation of cooling capacity, the improvement of yield and fruit quality. So far, the judgment of the dormancy process of strawberry is limited to the method of observing the size change of flower buds (leaf buds); however, this method can only be used to roughly judge the early stage of dormancy ending, and it cannot be used for the dormancy process (dormant induc...
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IPC IPC(8): G01N21/3563G01N21/359
CPCG01N21/3563G01N21/359
Inventor 伊兴凯徐义流潘海发张金云张晓玲高正辉齐永杰秦改花田红梅
Owner 合肥田峰草莓有限公司