Method for predicting density of wood of loblolly pine by utilizing near-infrared spectrum technology

A near-infrared spectroscopy and technical prediction technology is applied in the field of predicting the basic density of loblolly pine wood by using the near-infrared spectroscopy technology, which can solve the problems of large human operation error, unseen loblolly pine, and large sample damage, and achieves low cost, Overcome the effect of long measurement time and good result stability

Inactive Publication Date: 2014-11-05
SOUTH CHINA AGRI UNIV
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Problems solved by technology

When using this method to measure the density of loblolly pine wood, there are strict requirements on the sampling and preparation of the sample. The measurement process has cumbersome steps, time-consuming, great damage to the sample, and large human error and low efficiency. Inferior disadvantages
[0005] Some scholars have

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  • Method for predicting density of wood of loblolly pine by utilizing near-infrared spectrum technology
  • Method for predicting density of wood of loblolly pine by utilizing near-infrared spectrum technology
  • Method for predicting density of wood of loblolly pine by utilizing near-infrared spectrum technology

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Embodiment Construction

[0028] The present invention is further explained below in conjunction with the examples, but the examples do not limit the present invention in any form.

[0029] The taeda pine resin sample used in this embodiment when building the model is taken from: the taeda pine artificial test forest of Longshan Forest Farm, Lechang City, Guangdong Province; the predicted three different populations of loblolly pine samples are 270 samples of the progeny determination forest , 56 samples of the core group and 36 samples of the seed orchard were taken from the Yingde Forest Farm in Yingde City, Guangdong Province.

[0030] The present invention is realized by the following steps.

[0031] 1. Sample collection and routine determination of basic density

[0032] (1) Sample collection: Select 15-year-old loblolly pine plantations to select high-quality loblolly pine plants with vigorous growth, diameter at breast height of more than 16cm, and relatively straight dry shape. Tree growth con...

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Abstract

The invention discloses a method for predicting the density of wood of loblolly pine by utilizing a near-infrared spectrum technology. The method comprises the following steps: establishing a predicting model for the basic density of the wood of the loblolly pine on the basis of the near-infrared spectrum technology, and utilizing the model to fast and accurately measuring the basic density of the wood of the loblolly pine. The method disclosed by the invention has the beneficial effects that the defects of long determination time, large error due to artificial operation, high cost and the like in the conventional determination method for the density of the wood are overcome; chemicals do not need to be consumed, so that the harm of the chemicals to a human body is reduced; a sample is not consumed in the measurement process, the appearance and the internal quality of the sample can not be affected, and thus the method realizes typical nondestructive analysis and measurement; the testing repeatability is good, the analysis efficiency is high, the stability of a result is good, and a fast, simple and accurate testing method with low cost is provided for selective breeding of the loblolly pine in China.

Description

technical field [0001] The invention relates to a method for predicting the density of pine wood, in particular to a method for predicting the basic density of taeda pine wood by using near-infrared spectrum technology. Background technique [0002] Loblolly pine is native to the southeastern United States and is the main afforestation tree species in the southeastern United States. It has been introduced to China for more than 60 years. It has a straight and round stem shape and excellent material properties. It is one of the successfully introduced tree species. It is the strongest and most versatile wood in structural purposes. Its wood can be used for construction, pulp and fiber. Loblolly pine is rich in turpentine, which can be extracted and processed into rosin. Its quality is high, and it has become an important industrial timber afforestation tree species in vast areas of our country. In addition, the tree is tall and straight, with a crown like a torch and a stra...

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Application Information

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IPC IPC(8): G01N9/24
Inventor 黄少伟刘天颐刘纯鑫牛品邵春花蒋开彬
Owner SOUTH CHINA AGRI UNIV
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