不同类型纸袋套袋处理对梨果实品质的影响

Effect of different types of bagging treatment on fruit quality of pear

以‘鄂梨2号’为试材,研究不同套袋处理对其果实品质的影响。结果表明,套袋处理显著改善果实商品外观,果点变小、变少,锈斑指数降低;纸袋透光率与果实大小之间的线性回归方程为YW=159.61+0.99x,与果面亮度指标L值、色度坐标A,B的线性回归方程分别为YL=74.45-0.71x,YA=-16.68-0.77x,YB=52.52+1.86x;套袋处理果实Vc含量高于对照,果实可溶性固形物、可溶性糖、可滴定酸含量降低,但SSC/TA,SS/TA增加。‘鄂梨2号’直接套袋最适宜的纸袋为1-KK小林双层袋、韩国双层袋及台果双层袋;二次套袋能显著提高‘鄂梨2号’的外观品质,生产高档果品推荐使用。

Pyrus pyrifolia Nakai. cv. Eli No. 2 was used as material to study the effect of different types of bagging on fruit quality. The results showed that bagging could significantly improve the appearance of fruits with smaller and less fruit dots, and decrease rusty stain index. There was significant linear relation between transparency of bags （x） and the size of fruits（y） with the regression equation of Yw = 159. 61 ＋ 0. 99x. Regression equation and correlation coeffi- cients showed as： brightness （L）, YL =74. 45 -0. 71x; colority coordinate value （A）, YA = - 16. 68 -0. 77x; colori- ty coordinate value （B）, YB = 52. 52 ＋ 1.86x. The Vc content was higher than that of the control. The SSC/TA and SS/TA of the fruits in bagging treatment increased compared to the controls. According to the results, it was concluded that the most appropriate paper bag types for P. pyrifolia Nakai. cv. Eli 2 were two-layer bags from Xiaolin, South ko- rea, Taiguo and twice bagging was commendatory in the manufacturing of P. pyrifolia Nakai cv. Eli No. 2.