Test and analysis method of red spider insect pest coercion conditions of orange trees

A technology for testing and analyzing red spiders, which is applied in the detection of citrus spider mite plant pests and the testing and analysis of citrus red spider pest stress, and can solve the problems that there is no research on the application of citrus red spider pest stress prediction.

Active Publication Date: 2013-09-04
SOUTH CHINA AGRI UNIV
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Problems solved by technology

At present, hyperspectral technology has been widely used in various aspects of agricultural research. Although there have been researches on the prediction of plant chlorophyll content by hyperspectral technology, the model

Method used

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  • Test and analysis method of red spider insect pest coercion conditions of orange trees
  • Test and analysis method of red spider insect pest coercion conditions of orange trees
  • Test and analysis method of red spider insect pest coercion conditions of orange trees

Examples

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Embodiment 1

[0050] Such as figure 1 As shown, the test analysis method of the present embodiment comprises the following steps:

[0051] 1) Selection of citrus leaf samples

[0052] Pick 20 samples of diseased leaves (citrus red spider leaves) and 20 samples of healthy leaves from each tree on 5 fixed red spider citrus trees in the orchard. The leaf samples of each tree are sealed in a transparent fresh-keeping bag. And mark the corresponding experimental tree number on each fresh-keeping bag. Before the experiment, carefully clean the surface of the leaf sample, and mark the leaf sample category and experiment number on the back of each leaf sample. A represents a healthy leaf sample, and B represents a healthy leaf sample. Infected leaf samples were numbered from 01 to 20.

[0053] 2) Acquisition of hyperspectral images

[0054] Such as figure 2 As shown, the hyperspectral image acquisition system includes a CCD digital camera 1, an optical path component 2, a lens 3, a halogen lam...

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Abstract

The invention discloses a test and analysis method of red spider insect pest coercion conditions of orange trees. The method comprises the following steps of: (1) selecting a plurality of healthy orange tree leaf samples and orange tree red spider leaf samples; (2) collecting hyperspectral images of the orange tree leaf samples; (3) measuring the chlorophyll and carotenoid contents of the orange tree leaf samples; (4) pre-treating the collected hyperspectral images; (5) further denoising the pretreated hyperspectral images; (6) extracting the characteristic wave bands of the denoised hyperspectral images; (7) creating a detecting model through the extracted characteristic wave bands, picking out the optimal wave band combination by gradual regression analysis, and determining the quantitative relation of the optimal wave band combination and the chlorophyll and carotenoid contents; and (8) detecting the chlorophyll and carotenoid contents of the orange tree leaves through the created model so as to predict the red spider insect pest coercion conditions of the orange tree. The test and analysis method disclosed by the invention is used for predicting the red spider insect pest coercion conditions of the orange tree by creating the model and has the advantages of being unartificial and harmless.

Description

technical field [0001] The invention relates to a detection method for citrus spider mite plant pests, in particular to a method for testing and analyzing the stress of citrus red spider pests, and belongs to the field of spectral non-destructive detection of plant biochemical components. Background technique [0002] my country is one of the important origins of citrus, rich in citrus resources, widely planted in provinces at 20°-33° north latitude, and there are many fine varieties. Citrus spider mite is a very serious harmful mite on citrus, mainly distributed in Guangdong, Zhejiang, Fujian and other regions. The leaves that are persecuted by spider mites will have certain changes in the physical characteristics and physiological structure of the leaves. At present, the detection of citrus red spiders is mainly done manually and with simple tools, or by destructive methods such as biochemistry. [0003] However, the above-mentioned technologies all have shortcomings suc...

Claims

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Application Information

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IPC IPC(8): G01N21/25G01N21/31
Inventor 李震洪添胜李楠王建邓小玲郑建宝林瀚
Owner SOUTH CHINA AGRI UNIV
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