The composition and succession of tea garden pests and fauna are not completely counted. There are more than 90 kinds of tea village diseases recorded in China, and about 430 pests and pests. Not only are there many types of pests and diseases, but they also occur seriously, posing a serious threat to tea production. Therefore, the prevention and control of pests and diseases is one of the important measures to ensure the high quality and high yield of tea. National or local radio and television level editors at all levels of professional use of disease and pests, television forecasting and editing equipment can make tea tree pests and diseases will occur trends and prevention techniques and other information into TV programs, TV media pictures and texts, audio and video, image Vivid, fast delivery, timeliness, wide coverage, high penetration rate to the public, can play a timely and effective role in prevention and control.
The composition of tea garden pests and fauna is composed of tea garden pests and fauna. In the tea garden ecosystem, tea trees are the main body, other plants, animals and microorganisms are mutually restricted and interdependent, and undergo a development process from quantitative change to qualitative change. Relatively stable tea garden pests and fauna. Among the tea-producing provinces in China, the types and occurrences of pests and diseases in Yunnan, Guangdong, Zhejiang and other provinces with a long history of planting are more than those of new varieties of tea in Tibet and Shandong provinces. In addition to ecological factors, it largely reflects the cumulative effect of the species age on the population.
The succession tea trees of the tea garden pests and fauna grow densely, the canopy is closed, and the tea garden ecological environment and nutrient conditions are much smaller than other crop fauna, which constitutes a relatively stable pest and fauna and natural enemy resources. The dominant species can maintain the main position for a long time, and the sporadic pest populations are not easy to rise to the dominant species. However, due to changes in climatic conditions and human factors, especially in the past 30 years, with the development of modern science and technology, the management of tea gardens has strengthened, and more and more human factors have intervened in the natural world, and obvious phenomena of pests and diseases have occurred. for.
Since the 1960s, the area of ​​tea gardens in China has increased more, and the planting methods have also developed from cluster cultivation to dense planting, which has significantly reduced the space of tea gardens. The slab planted tea gardens have created conditions for the growth, reproduction and spread of pests and diseases. Providing a more concealed hiding place, the species and density of pests and diseases increase. Tea plantation will also change the pests and fauna. For example, after the implementation of the intercropping of gum tea in the South China tea area, the root rot disease such as red root rot and brown root rot has become a dominant species.
The growth of tea trees in Jiangbei tea area in China is not closed. Usually, legumes, corn and other plantings are planted between rows, which makes the false green leafhoppers of many hosts seriously. In the case of fertilization and high nitriding in the tea garden, the new shoots grew soft and dense, and the pest populations on other plants were transferred to the tea trees, and developed into the dominant species in the tea garden pests and fauna. For example, the oil stalk is the secondary pest on the oil tung. When it migrates to the tea garden, the diet gradually becomes specialized, and it has become an important pest in the tea gardens of Hunan, Guangxi, Jiangxi, Zhejiang and other provinces.
The false green leaf green leaf is a secondary pest on the trees such as peach trees; the tea stalk line damages cotton, vegetables and other plants. Once they enter the tea garden, they settle in the tea garden because they prefer soft and sweaty tea. And developed into a national tea tree main pests and pests. Tea leaves are harvested to provide a spawning place for tea moths, making this a rare pest on the Camellia plant. It has become a major pest in the Jiangnan tea area since the 1970s.
In addition, due to the unreasonable use of pesticides, while killing pests, it also harms the natural enemies of pests, causing mites and mites to rise to the dominant species in tea gardens. There are four trends in the succession of pests in tea gardens: succession from feeding insect pests to sucking pests; succession from large pests to small pests; from generations with fewer generations of low-fertility pests to generations, Succession of highly fertile pests; succession from specialized pests to omnivorous pests. The floristic succession of tea garden diseases is not as obvious as that of pests. However, due to the reform of cultivation techniques, the environmental conditions underlying the pathogens have been changed, resulting in changes in the types and quantities of diseases. After the application of nitrogen fertilizer in the tea garden, the composition of the biochemical components in the new shoots of the tea tree was changed, resulting in an increase in the number of germ disease diseases. For example, in recent years, new diseases such as tea bud and wilt disease have occurred and are popular in Zhejiang, Anhui, Guangdong and other provinces. Root rot disease develops after planting tea in the shrub area. After the promotion of vegetative reproduction in the tea area, the root-knot nematode disease and root cancer disease transmission of many hosts were accelerated, and the problem of root disease was highlighted. The succession trend of the tea garden disease fauna is as follows: the disease from the damage of the leaves and the old leaves to the success of the bud disease; from the leaf disease to the root and stem disease succession.
The composition of tea garden pests and fauna is composed of tea garden pests and fauna. In the tea garden ecosystem, tea trees are the main body, other plants, animals and microorganisms are mutually restricted and interdependent, and undergo a development process from quantitative change to qualitative change. Relatively stable tea garden pests and fauna. Among the tea-producing provinces in China, the types and occurrences of pests and diseases in Yunnan, Guangdong, Zhejiang and other provinces with a long history of planting are more than those of new varieties of tea in Tibet and Shandong provinces. In addition to ecological factors, it largely reflects the cumulative effect of the species age on the population.
The succession tea trees of the tea garden pests and fauna grow densely, the canopy is closed, and the tea garden ecological environment and nutrient conditions are much smaller than other crop fauna, which constitutes a relatively stable pest and fauna and natural enemy resources. The dominant species can maintain the main position for a long time, and the sporadic pest populations are not easy to rise to the dominant species. However, due to changes in climatic conditions and human factors, especially in the past 30 years, with the development of modern science and technology, the management of tea gardens has strengthened, and more and more human factors have intervened in the natural world, and obvious phenomena of pests and diseases have occurred. for.
Since the 1960s, the area of ​​tea gardens in China has increased more, and the planting methods have also developed from cluster cultivation to dense planting, which has significantly reduced the space of tea gardens. The slab planted tea gardens have created conditions for the growth, reproduction and spread of pests and diseases. Providing a more concealed hiding place, the species and density of pests and diseases increase. Tea plantation will also change the pests and fauna. For example, after the implementation of the intercropping of gum tea in the South China tea area, the root rot disease such as red root rot and brown root rot has become a dominant species.
The growth of tea trees in Jiangbei tea area in China is not closed. Usually, legumes, corn and other plantings are planted between rows, which makes the false green leafhoppers of many hosts seriously. In the case of fertilization and high nitriding in the tea garden, the new shoots grew soft and dense, and the pest populations on other plants were transferred to the tea trees, and developed into the dominant species in the tea garden pests and fauna. For example, the oil stalk is the secondary pest on the oil tung. When it migrates to the tea garden, the diet gradually becomes specialized, and it has become an important pest in the tea gardens of Hunan, Guangxi, Jiangxi, Zhejiang and other provinces.
The false green leaf green leaf is a secondary pest on the trees such as peach trees; the tea stalk line damages cotton, vegetables and other plants. Once they enter the tea garden, they settle in the tea garden because they prefer soft and sweaty tea. And developed into a national tea tree main pests and pests. Tea leaves are harvested to provide a spawning place for tea moths, making this a rare pest on the Camellia plant. It has become a major pest in the Jiangnan tea area since the 1970s.
In addition, due to the unreasonable use of pesticides, while killing pests, it also harms the natural enemies of pests, causing mites and mites to rise to the dominant species in tea gardens. There are four trends in the succession of pests in tea gardens: succession from feeding insect pests to sucking pests; succession from large pests to small pests; from generations with fewer generations of low-fertility pests to generations, Succession of highly fertile pests; succession from specialized pests to omnivorous pests. The floristic succession of tea garden diseases is not as obvious as that of pests. However, due to the reform of cultivation techniques, the environmental conditions underlying the pathogens have been changed, resulting in changes in the types and quantities of diseases. After the application of nitrogen fertilizer in the tea garden, the composition of the biochemical components in the new shoots of the tea tree was changed, resulting in an increase in the number of germ disease diseases. For example, in recent years, new diseases such as tea bud and wilt disease have occurred and are popular in Zhejiang, Anhui, Guangdong and other provinces. Root rot disease develops after planting tea in the shrub area. After the promotion of vegetative reproduction in the tea area, the root-knot nematode disease and root cancer disease transmission of many hosts were accelerated, and the problem of root disease was highlighted. The succession trend of the tea garden disease fauna is as follows: the disease from the damage of the leaves and the old leaves to the success of the bud disease; from the leaf disease to the root and stem disease succession.
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