Tea tree type
The basic units of tea trees below species are divided according to the morphological characteristics, economic characters and geographical distribution of tea trees. The status of tea in the plant classification system is as follows:
Angiosperm phylum Angiospermae
Dicotyledonous class Dicotyedoneae
Theales of Camellia
Theaceae Theaceae
Camellia of Camellia
According to the international nomenclature and the study of tea characters, Camelliasinensis (L.) O.Kuntze was chosen as the scientific name of tea plant.
All the tea trees in the world belong to the basic species of Camelliasinensis (L.) O.Kuntze. It is divided into two subspecies, namely, Chinese subspecies and Assam subspecies. Chinese subspecies are mainly distributed in China, Japan and the Soviet Union. The tree type is relatively small, belonging to shrub or semi-tree type, the leaf is small, the leaf surface is smooth and leathery, and the flowering is early and more.
According to the morphological characteristics, Chinese subspecies can be divided into two types, namely Wuyi variety and large leaf variety. Wuyi varieties are mainly distributed in eastern China, southeastern China and Japan, while large-leaf varieties are mainly distributed in Yunnan, Guizhou, Sichuan and other provinces.
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Tea tree cultivation should pay attention to matters
(1) The problem of tea tree shaping height. It is directly related to the transportation, utilization, absorption and consumption of nutrients in tea plants. It is generally believed that tea trees are low and good, and the appropriate tree height is between 60-70 cm. Minerals, inorganic salts, nitrogen, phosphorus, potassium and other nutrients from tea roots to branches, buds and leaves transport distance is short, fast, less consumption, nutrition concentration, high utilization rate. (2) The problem of keeping weeds. First of all, perennial firewood roots should be removed from the tea garden, such as the root whip of small bamboo, white hair grass roots, pig vine, wild grape, and the fruits of forest miscellaneous trees falling after maturity.
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Control of small green leafhopper with false eyes in tea plant
False-eyed small green leafhopper, commonly known as floating dust, is one of the main pests on tea trees in various tea areas of our province. Due to its harm, the light bud leaves are damaged, the yield is reduced, and the heavy bud leaves are destroyed, resulting in loss of harvest. 1. Morphological characteristics of the false-eyed small green leafhopper belongs to Homoptera, Cicadellidae. The whole life goes through three stages of egg → nymph → adult. 1. The egg is crescent-shaped, about 0.8 mm long and 0.15 mm wide, initially milky white, gradually turning light green, and a pair of red eye spots can be seen through the front end before hatching. 2. Nymphs total 5
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