The selection of plots is the primary problem to be considered in the process of tea cultivation. Generally speaking, the selected plots are investigated by integrating the soil conditions, altitude and topography required for the growth of tea trees. In the choice of soil for tea planting, the slightly acidic sandy soil with high humus content and thick soil layer tends to have better air permeability and drainage advantages.

Stability is the most basic requirement for topography in the process of tea planting. It is suggested that tea farmers choose the hillside with a slope below 25 degrees to plant tea trees. In the daily management of tea garden soil, attention should be paid to maintaining soil fertility. Grass leaf mulching can stabilize soil water conservation, promote the activity of tea garden land, and effectively inhibit the development and spread of weeds.

Second, balanced fertilization.

Fertilization management of tea planting mainly includes two steps, on the one hand, applying base fertilizer, on the other hand, applying topdressing. Tea farmers should choose to dig ditches and fertilize between tea trees in autumn. Stanley pure sulfur 17- 17- 17 is recommended.

The most important principle of applying base fertilizer is to ensure the sufficiency of fertilizer. The ideal fertilization method is to mix biological fertilizer with Stanley's pure sulfur-based fertilizer to enrich the nutrients of the land. Topdressing focuses on the early spring of tea tree germination, and urea is the first choice, supplemented by organic fertilizer. When filling soil, we must pay attention to the adequacy and uniformity of mixing. In order to avoid the sinking of the trench, the fill should be above the horizon.

Three. Climate disasters and pest control

Problems that should be paid attention to in tea plant pest control include drought prevention and pest control. Because Zhaoping County has the basic characteristics of high temperature and little rain in summer, we should pay more attention to drought resistance when developing tea gardens. In order to prevent drought, the ideal tea garden should be chosen near the water source with thick soil layer. Pest control should adhere to the plant protection policy of "prevention first, comprehensive management". Matrine and beta-cypermethrin can be used to control tea geometrid, and veratrine, indoxacarb and diafenthiuron can be used to control green leafhopper.

Mineral oil and propargite can be used to control tea orange gall mite, and pyraclostrobin and difenoconazole can be used to control bud leaf disease. In the application of pest control technology, the basic principles should be followed: the frequency and theme of pesticide use should be controlled within a reasonable range; The natural enemies of tea trees should be used as much as possible rather than killed; Strengthen the active application and popularization of biological pesticides.

Fourth, tea tree pruning and picking

It is very necessary to prune tea branches correctly in a proper period for coordinating tea growth, improving tea yield and ensuring tea quality. Tea pruning mainly includes three links: fixing stem, wiping bud and shaping pruning. In general, the trunk of tea trees can be highlighted by three or four times of plant pruning. In the first pruning, three or four relatively thick branches are usually selected on the tea tree as the main branches for further cultivation.

The second pruning selects two or three branches from the last branch. Repeat this way, you can trim the trunk about one meter and determine the tree shape of the whole tea tree.

The scientific determination of tea picking time has two important meanings. On the one hand, it can ensure the quality of collected tea, on the other hand, it can avoid the negative impact on the healthy development of tea trees. In practice, according to the unique characteristics of tea trees, a set of basic methods of tea picking has been formed.

Theoretically, the general part of tea picking is between the middle open face and the small open face, and there is little difference between spring and autumn or winter and summer. However, in the actual production of tea cultivation management, tea picking is generally advanced in spring, which is conducive to prolonging the growth cycle of tea and handling the contradiction between tea growth and picking, quality and quantity.

First, tea:

Tea originated in China, and it was first offered as a sacrifice. However, it was used as food by people from the late Spring and Autumn Period, developed into medicine in the middle of the Western Han Dynasty, developed into a high-grade palace drink in the late Western Han Dynasty, and became popular among the people as a common drink after the Western Jin Dynasty. The earliest traces of artificially planted tea were found in Tianluoshan site in Yuyao, Zhejiang Province, with a history of more than 6,000 years.

Tea drinking began in China. The leaves are leathery, oblong or oval, and can be directly soaked in boiling water. It is divided into six categories according to varieties, production methods and product shapes. According to seasons, it can be divided into spring tea, summer tea, autumn tea and winter tea. Various kinds of crude tea or refined tea are reprocessed to form added tea, including scented tea, pressed tea, extracted tea, medicinal health tea, tea food and tea beverage.

Tea contains catechins, cholesterol ketone, caffeine, inositol, folic acid, pantothenic acid and other ingredients, which can improve human health. Tea beverage-tea is known as "one of the three major drinks in the world".

References:

Baidu baike tea