A method of fruit thinning based on near-infrared spectroscopy

Abstract

The invention discloses a novel fruit thinning method. A near-infrared spectroscopy is utilized to scan sucrose solutions of different concentrations, characteristic wavelengths are extracted, a mathematical equation of sucrose concentration and near infrared spectrum reflection strength under the characteristic wavelengths is established, and thus a method for detecting content of sucrose in carpopodium of a fruit is obtained by adopting the near-infrared spectroscopy. The near-infrared spectroscopy is adopted to scan the carpopodium of the primarily-born fruit on the plant to obtain near-infrared spectrum data, and the concentration of the sucrose in the carpopodium is obtained according to the mathematical equation in the first step; the concentration of the sucrose in the carpopodium is compared with the concentration of sucrose in carpopodium of an adjacent fruit, and the fruit with the lowest concentration of the sucrose in the carpopodium is selected to thin fruits. According to the method, the fruit thinning effectiveness can be improved, and the method can be applied to fruit thinning of tomatoes, sweet peppers and eggplants and the like.

Description

technical field

[0001] The invention belongs to the field of protected horticultural cultivation, and in particular relates to a technique for accurately locating the position of greenhouse tomato fruit thinning by using near-infrared spectrum. Background technique

[0002] Protected horticulture has developed rapidly in my country, from 10,300 hectares in 1982 to 4.109 million hectares in 2015, ranking first in the world in total area. At present, tomato pruning technology in protected cultivation in my country is mainly transplanted from field cultivation technology, that is, through the experience of the producer, the fruit to be removed is selected for fruit thinning. This method requires the producer to have a deep understanding of the growth and development of tomato fruit. awareness, and is subjective and arbitrary. However, there are many differences between field tomato cultivation and facility tomato cultivation, which are mainly reflected in the following three as...

Examples

Embodiment Construction

[0029] Taking the fruit thinning of greenhouse tomato as an example below, the technical solution of the present invention will be described in further detail. A kind of fruit thinning method based on near-infrared spectrum, it comprises following three steps:

[0030] The first step is to obtain a detection method for determining the sucrose content.

[0031] Using a near-infrared spectrometer to scan different concentrations of sucrose solutions, extract characteristic wavelengths, establish a mathematical equation for the concentration of sucrose at the characteristic wavelengths and the reflection intensity of the near-infrared spectrum, and obtain a detection method for measuring the sucrose content in the greenhouse tomato stalk by using the near-infrared spectrometer;

[0032] The second step is to obtain the sucrose concentration in the tomato fruit stalk.

[0033] The near-infrared spectrometer is used to scan the fruit stalk of the preliminary fruit-bearing fruit on...

technical field

[0001] The invention belongs to the field of protected horticultural cultivation, and in particular relates to a technique for accurately locating the position of greenhouse tomato fruit thinning by using near-infrared spectrum. Background technique

[0002] Protected horticulture has developed rapidly in my country, from 10,300 hectares in 1982 to 4.109 million hectares in 2015, ranking first in the world in total area. At present, tomato pruning technology in protected cultivation in my country is mainly transplanted from field cultivation technology, that is, through the experience of the producer, the fruit to be removed is selected for fruit thinning. This method requires the producer to have a deep understanding of the growth and development of tomato fruit. awareness, and is subjective and arbitrary. However, there are many differences between field tomato cultivation and facility tomato cultivation, which are mainly reflected in the following three as...

Examples

Embodiment Construction

[0029] Taking the fruit thinning of greenhouse tomato as an example below, the technical solution of the present invention will be described in further detail. A kind of fruit thinning method based on near-infrared spectrum, it comprises following three steps:

[0030] The first step is to obtain a detection method for determining the sucrose content.

[0031] Using a near-infrared spectrometer to scan different concentrations of sucrose solutions, extract characteristic wavelengths, establish a mathematical equation for the concentration of sucrose at the characteristic wavelengths and the reflection intensity of the near-infrared spectrum, and obtain a detection method for measuring the sucrose content in the greenhouse tomato stalk by using the near-infrared spectrometer;

[0032] The second step is to obtain the sucrose concentration in the tomato fruit stalk.

[0033] The near-infrared spectrometer is used to scan the fruit stalk of the preliminary fruit-bearing fruit on...