| 乌龙茶做青过程茶梢水势的变化 |
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| 引用本文： | 郭雅玲,杜连胜,林建民.乌龙茶做青过程茶梢水势的变化[J].福建农林大学学报(自然科学版),1994(2). |
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| 作者姓名： | 郭雅玲 杜连胜 林建民 |
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| 作者单位： | 福建农业大学园艺系 |
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| 摘 要： | 毛蟹鲜叶经晒青后分别进行做青和室内萎调，采用１２０℃快速法和小液流法测定鲜梢、做青梢和室内萎凋梢各阶段的组织含水量和组织水势．结果表明，不同茶梢状态的水势差异显著性与含水量差异显著性相似，但水势能表明水分的流向和限度．便叶之间的水势差异达显著水平，第二叶与第三叶之间的水势无明显差异．做青对茶梢水势有影响．摇青和晾青的水势变化达显著或极显著，这种变化因工艺进程而异．室内萎凋过程水势变化前期较平稳，中期略升，后期剧降．做青过程中随摇青和晾青的交替反复作用，茶梢组织水势呈现多次升降的工艺节奏．“还阳”与“退青”现象从水势变化中得到部分解释．
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| 关 键 词： | 做青，室内萎凋，茶梢状态，含水量，水势，水分传输 |
Changes of the Water Potential of Oolong Tea Shoots During Fine Manipulation |
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| Guo Yaling, Du Liansheng, Lin Jianmin.Changes of the Water Potential of Oolong Tea Shoots During Fine Manipulation[J].Journal of Fujian Agricultural and Forestry University,1994(2). |
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| Authors: | Guo Yaling Du Liansheng Lin Jianmin |
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| Abstract: | The fresh tea shoots of Maoxie were proceased successively through drying outdoors and fine manipulation or room-withering. The tissue water content and the tissue water potential of the fresh Shoots,finely manipulated shoots and room-withered shoots were determined by rapid tact at 120℃ and dye method at different processing stages. For the different situations of the tea shoots, the significance of the difference between the water contents and water potentials were similar. However, the direction and the extend of water movement can be reflected by the water potential. The difference of the water potentials between the stalks and the leaves was significant, while that between the second leaf and the third leaf was not significant. The water potential was influenced by the fine manipulation. The difference of the water potentials between the rocked shoots and the shoots dried indoors were significant or extremely significant, which varied during the processing course. The water potential of the shoots did not change obviously during the early roomwithering, increased slightly during the middle room-withering and decreased dramatically during the late room-withering. The increase-decrease rhythm of the water potential was found during the fine manipulation with repeatedly replaces of rocking and drying indoors. The change of the water potential can partially explain the phenomenon of swelling anew and drooping. |
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| Keywords: | fine manipulation room-withering state of tea shoots water content water potential water conduction |
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