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樹形對適收期黃花梨糖度VIS/NIR光譜檢測的影響研究
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國家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2012AA10A504)和浙江省公益性技術(shù)應(yīng)用研究計(jì)劃資助項(xiàng)目(2012C21010)


Effect of Tree Shapes on Prediction of Sugar Content of Huanghua Pear in Harvest Time Using Visible/Near Infrared Spectroscopy
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    摘要:

    針對樹體的光通透性影響果實(shí)糖分的積累,,不同樹形的果實(shí)品質(zhì)存在差異的問題,研究了樹形對適收期黃花梨糖度可見/近紅外光譜檢測模型的影響。采集了適收期前后6個批次,、不同樹形(開心形和棚架形)的黃花梨果實(shí)480個進(jìn)行實(shí)驗(yàn),,兩類樹形果實(shí)糖度差異顯著(p<0.05),,采用同一樹形黃花梨建立的模型預(yù)測均方根誤差(RMSEP)分別為0.69°Brix,、0.64°Brix,,相對分析誤差RPD分別為208,、197,;單一樹形全部樣品建立的模型對不〖JP2〗同樹形樣品的RMSEP分別為1.31°Brix、1.07°Brix,,RPD分別為1.14,、1.36;2類樹形聯(lián)合模型RMSEP為0.59°Brix,,RPD為2.38,。結(jié)果表明,,樹形對適收期黃花梨糖度預(yù)測模型的精度和穩(wěn)健性均有較大影響,對進(jìn)一步研究近紅外光譜技術(shù)在田間水果采收期品質(zhì)及最佳采收期檢測的應(yīng)用有一定的參考價值,。

    Abstract:

    Light permeability of tree affects the accumulation of sugar in fruits, and there is a difference in quality of fruit between different types of trees. The effect of tree shapes on prediction of sugar content of Huanghua pears in harvest time by visible/near infrared spectroscopy (VIS/NIR) was evaluated. A total of 480 pears were picked from opening canopy trees and trellistrained trees in six batches, there was significant difference in fruit sugar content between two types of fruit trees (p<0.05). The root mean square error of prediction (RMSEP) and residual prediction deviation (the ratio of standard deviation to RMSEP, RPD) of models of single tree shape fruits for predicting similar fruits ranged from 0.69°Brix to 0.64°Brix, and from 2.08 to 1.97, while for all fruits of different tree shapes, they ranged from 1.31°Brix to 1.07°Brix, and from 1.14 to 1.36, respectively. The RMSEP of the combined model was 0.59°Brix, and RPD was 2.38. The results showed that the model established by single tree shape fruits had poor performance, while a model established by using combined shapes fruits would obtain ideal robustness and good accuracy. The results would help to further utilize VIS/NIR to test quality of fruits in harvest time and predict the optimal harvest time.

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劉輝軍,應(yīng)義斌.樹形對適收期黃花梨糖度VIS/NIR光譜檢測的影響研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2015,46(7):233-237. Liu Huijun, Ying Yibin. Effect of Tree Shapes on Prediction of Sugar Content of Huanghua Pear in Harvest Time Using Visible/Near Infrared Spectroscopy[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(7):233-237.

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  • 收稿日期:2014-10-10
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  • 在線發(fā)布日期: 2015-07-10
  • 出版日期: 2015-07-10
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