At present, tea gardens enter the summer management. After the tea trees are picked by spring tea, the tree body consumes a lot of nutrients and the tree vigor weakens. At the same time, as the temperature rises, the number of tea plant pests and diseases rapidly increases, and the weeds in the tea gardens grow rapidly. Not timely or in place, will directly affect the growth of tea and summer, summer, autumn tea production and quality. In order to ensure the increase of production and income of tea throughout the year, the management of summer tea gardens must grasp the following management measures:
I. Effective prevention and control of tea plant diseases and pests
1, to prevent the main, vigorously promote agronomic practices, manual removal and biological control methods. The first is to strengthen management of tea gardens, increase tree vigor, improve ecological conditions, and protect the natural enemies of tea pests. The second is to constantly observe the tea gardens and find that the eggs or insects on the tea plantations or sporadic tea trees must be manually removed and burned in a concentrated manner. The third is that the summer tea is properly picked early to remove the eggs on the shoots and reduce the disease and insect source. The fourth is the occurrence of tea beetle tea gardens, in the young insects of the appropriate amount of stocking adult chickens, 30-50 / mu, can effectively control the outbreak of pests.
2. For chemical pesticides that control the outbreak of tea pests and diseases, the use of methamidophos, methyl parathion, cypermethrin, and other highly toxic residual chemical pesticides is strictly prohibited. Special-effect, low-toxicity, low-residue pesticides are used. In the early stages of pests, the doses, methods used, safety intervals, etc. must be strictly enforced. In case of outbreaks of pests such as tea caterpillars, tea leafhoppers, and other pests, use 2.5% bifenthrin (Uranus) EC at 2,000 times (if there is 750-1000 tea plantations in the case of tea plants in the form of Reticuli). Double the liquid) to control tea tree pest outbreaks. Tea caterpillars and tea silkworms are treated with 2.5% Uranus EC 1500 times, and beetles are treated with 2.5% Uranus EC 750-1000 times. Exports of manufactured products to countries such as Japan and the European Union can only use imported state-owned registrations. The used pesticides and unregistered pesticides shall not be used.
Second, timely pruning tea tree
According to tea tree age and tree vigor, corresponding pruning measures were taken to cultivate neat and productive crowns. After pruning the tea tree after spring tea, not only does it have a small impact on the tea production in the year, but also the tea tree tends to recover quickly. However, after trimming the tea tree, it is necessary to strengthen fertilizer management, otherwise it will affect the effect.
1, stereotypes trim. For the young tea trees and tea trees that have been transformed into tung, they are shaped and trimmed to shape the canopy.
2, light trim. Cut off the "chicken claws" on the canopy and the leg buds picked above the canopy to promote the neatness of the tea tree.
3, deep pruning. The ability of young shoots to shoot shoots to weaken, growth is weak, with a light pruning has been difficult to achieve the desired effect of the tea tree, cut off the crown surface 10-15cm shoots, so that the tea tree to re-extract new shoots, improve the ability of buds, extend the effective economic tea Years of age.
4, heavy trim. For the semi-aging and premature tea trees, heavy pruning techniques are used to cut off the leaves more than 30 cm above the ground. If the tea tree originally grows smaller, then it may be better to cut it at one-half the height of the original tea tree.
5, Taiwan. For severely aged tea trees, cut branches and leaves that are 3-5 cm above the ground. After the tea tree rakes, deep plowing and fertilization management will be carried out in time so that new branches and roots can be regenerated into new canopies.
Third, science in addition to raising tea garden weeds
1, timely removal of weeds in tea gardens. Herbicides such as glyphosate should not be used. For vicious weeds such as fern, reed, amphibia, and white hairy grass, they must be removed in time when they grow on the tea plexus or on the surface of pods. They grow on the walls, roadsides, and gutters. It is to be dismissed. Regular rations of sheep (Southern varieties) in tea gardens can effectively control the occurrence of harmful grasses.
2. The conservation of science, such as sampans, ladders, roadsides, and ravines, is conducive to the conservation of soil and water, and is conducive to the protection of natural enemies. Grasshoppers and other grasses are natural living covers in tea gardens.
3, cut green timely. The tea garden grass is a natural high-quality green manure and drought-proof covering, which is cut green during the period of vigorous growth, flowering and fruiting, and covers the tea garden in situ.
IV. Early application of germination fertilizer
Summer tea precipitating fertilizer is generally based on fast-acting nitrogen fertilizer, applied under the dripping line of tea tree crown. To promote the vegetative growth of tea trees, the new shoots germinate neatly.
V. Dredging flood prevention
May-June is a rainy season. The rainfall is large and concentrated. If there is more water in the tea garden, it will not be conducive to the growth of tea plants. Therefore, regardless of the land or slopes of tea gardens, drainage should be cleared as soon as possible so as to avoid damage during the flood season.
Sixth, the tea plantation is resistant to high temperature and drought
After the end of the rainy season, before the onset of the dry season, before the end of the dry season, the tea plantations will be completed before the end of June, and the gaps between the rows of tea will be covered with grass. The amount of grass used per acre will be between 1,500 and 2,000 kilograms. The grasses will not contain grass seeds and pathogens. Insect pests such as straw, green manure, soybean stalks, and mountain grass are all good.
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