Common Tea Diseases in China
More than 100 kinds of tea diseases have been recorded, and more than 30 kinds of common diseases have been recorded.
1. Nearly 40 kinds of leaf diseases have been recorded.
The main bud leaf diseases are: tea cake disease, which occurs seriously in alpine tea gardens in southwestern tea areas; tea white spot disease and tea round red spot disease, especially in alpine tea gardens in eastern and southwest China, suffer seriously under the condition of low temperature and high humidity; tea bud blight is one of the common and important diseases in Zhejiang and Hunan provinces.
Adult and old leaf diseases such as tea moire leaf blight, tea ring spot, tea anthracnose, tea brown leaf spot, tea coal disease, tea red leaf spot and so on are common in various tea areas in China. The diseased leaves fall off easily, resulting in the decline of the tree.
About 30 kinds of stem diseases have been found. The main species commonly occurring in tea areas are tea branch tip black spot disease, tea carcass blight, tea gray plaster disease, tea branch black mole disease and tea moss and lichen. There is also tea branch cancer in the southwest tea area. South China and Anhui and Hunan have tea red algae disease, tea black rot and tea line rot.
More than 30 kinds of root diseases have been recorded.
The main species are tea seedling root knot nematode disease, tea seedling white silk disease, tea root rot. It often causes the whole plant to die.
Adult root diseases include red root rot, brown root rot, black root rot and purple root rot.
Second, there are few kinds of flower and fruit diseases. Only flower rot (Botrytiscinerea) is common. Fruit diseases include moire leaf blight and ring spot.
Tea plant is a perennial evergreen crop, with dense canopy, small microclimate change, stable environmental conditions and abundant pathogenic microflora. Many tea plant diseases pose a serious threat to some areas. Tea cake disease, tea white spot disease, tea round red spot disease and other low-temperature and high-humidity diseases are often found in tea areas with higher elevations. The harm of tea root rot, tea black rot and tea line rot is more serious in the tropical and subtropical tea areas of South China. Nowadays, the extensive use of nitrogen fertilizer has changed the composition of amino acids in tea, and the tissue structure of tea is soft, which is conducive to the infection of bacteria, resulting in an increase in the number of leaf diseases.
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Non-pollution tea tree management technology
Tea garden soil should be tilled frequently to facilitate microbial activities, accelerate soil maturation, promote the release of mineral elements, and facilitate root absorption. Depending on the soil structure, shallow tillage is carried out several times a year at a depth of 5~10 cm; intertillage is carried out 2~3 times at a depth of 10~15 cm; deep tillage is carried out once a year or every other year at a depth of 25~30 cm. Shallow tillage and intertillage can be combined with weeding and topdressing in each tea season, while deep ploughing can be combined with clearing garden or applying organic fertilizer. Application of organic fertilizer in tea garden can improve soil physical and chemical properties and nutrient sustainable supply capacity;
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Wannong 111 (Tea Tree)
Variety approval No.: national examination Tea 2002009 crop species: tea Variety name: Wannong 2002009 selection and breeding Unit: Anhui Agricultural University Variety Source: Yunnan Daye Tea Seeds were bred by CO60 irradiation at the provincial level: in 1996, the crop Variety approval Committee of Anhui Province approved the characteristics: it belongs to small tree type, big leaf type, mesophytic species. The tree is half-open and the leaves are growing horizontally. Oval leaf shape, dark green, raised leaf surface, sharp tip, leaf
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