Control method for regulated deficit irrigation of Tie Guanyin tea trees

Abstract

The invention relates to an irrigation control method for Tie Guanyin tea trees. According to the method, the water deficit state of the Tie Guanyin tea trees is maintained through controlling the irrigation period and the amount for each time of irrigation of the Tie Guanyin tea trees, therefore deficit training to a certain extent is experienced by the Guanyin tea trees, and the tea quality can be improved. Water supplementary irrigation is performed when the water potential of the Tie Guanyin tea tree blades is reduced to -2.10+/-0.20MPa or the soil water potential is reduced to 0.80+/-0. 05MPa (the tea trees are under a water deficit state). Crop evapotranspiration 1/2ETc is taken as a reference value for each irrigation amount, and the 1/2ETc of the Tie Guanyin tea trees is 55+/-8m<3>/mu.

Description

technical field [0001] The invention relates to a method for optimizing and utilizing limited mountain water resources during the cultivation and production of Tieguanyin tea trees, and uses "key water" to ensure high-quality production of Tieguanyin tea leaves. Background technique [0002] With the improvement of people's living standards and people's new understanding of the drinking value of tea, people are more and more aware of the important role of tea on human health. Tea has become a worldwide beverage, and drinking tea has also become a synonym for health and fashion in modern life. And Tieguanyin is the best oolong tea, known as the king of tea. There are many mountains in Fujian Province, with an altitude of 100-1000 meters. Except for individual islands, tea is produced in almost all counties. Among them, Anxi County is surrounded by mountains, with continuous peaks and ridges. It is perennially cloudy and foggy. The temperature is 15-18.5°C, the average ann...

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Problems solved by technology

However, there is no report on the regulated deficit irrigation techno