The green production mode of tea covers tea varieties, cultivation, soil, plant protection, processing, marketing, branding and other fields. Adhering to the human-centered rational ecological ethics as the guiding ideology, integrating biotechnology, and striving to revitalize the national tea industry.
Tea area
The main species and hazard characteristics of borer pests
Tea moth
It is mainly harmful to the young tea plants in the new tea garden, one generation a year, late June to late September late September to damage the leaves, and from early October to April of the following year to drill the branches of the moth tea trees. Adults lurk in the lower leaf back of the tea bush during the day, and begin to move around dusk, with weak flight power and strong phototropism. After hatching, the larvae dive into the leaf flesh from the epidermis on the back of the leaf, feed on the leaf flesh, form yellow-green to yellow-brown round insect spots, the larva leaves the leaf after 3 years, moths into the branches, feeds up and down the borer hole to form an insect path, there are often wood chips excrement outside the hole, the larvae first make a circular feathering hole on the branch after maturity, and then make a white thin cocoon pupa in the hole, the affected branches are often easy to dry up, but they do not fall off immediately, and later lose water and wither and die.
Tea pile sand moth
It generally occurs in tea gardens with older or weaker trees, and once a year, the old mature larvae overwinter on the branches of the tea tree, and the eggs are laid on the back of the young leaves, and the larvae begin to moth in late July. Adults are nocturnal and phototropic, and the hatching larvae can spit silk and paste 2 leaves, sneak into them to bite the epidermis and leaf flesh, leaving a layer of epidermis, so that the leaves die. After the 3rd instar, moths eat branches, mostly at the branch branch or scars, first peel off the skin of the branches, then moth a round hole, and then moth into the xylem, forming a short and straight worm road, and spit silk on the branches outside the worm road to form a worm nest, like a pile of sand. When the larvae are frightened, they immediately retreat into the worm passage. The larvae are drought tolerant and can survive in drier tea branches, and when mature, they pupate in the worm passage.
Tea branch sickle moth
Mainly harmful to old tea plants, generation by year, old mature larvae overwinter in the branches of tea trees, eggs scattered at the base of the top bud, mid-June is the peak of larval hatching, and began to be pest. Adults are nocturnal and phototropic. The larvae hatch from the ends of the branches and moth, and after 4-5 days, the buds on the shoots wither. 1-2 instar larvae feed in the twigs, after the 3rd instar moth into the larger side branches and trunk as a pest, from top to bottom to feed xylem, and can moth to the near surface part, the borer hole is large and straight, the road wall is smooth, there is a row of nearly circular excretion holes on the affected branch, the feces excreted by the larvae are scattered on the leaves or the ground, the feces are yellow or brownish yellow, the larvae are mature, climb up to bite a nearly circular feather hole about the top of the branch, spit silk in the moth channel below the feather hole, and cocoon the pupa.
Tea Tianniu
In order to harm the old tea plant, the 2-year generation, the larvae and adults overwinter in the branches of the tea tree, the eggs are scattered under the skin of the main trunk near the ground, and the larvae appear from June to early July. The larvae of the tea cow moth the branches and roots, resulting in the weakening of the tea tree and the thin and sparse buds. Adults hide in the shade of tea bushes during the day, mostly at night and in the early morning, and have phototropism. After the larva hatches, first bite the branch cortex, 1-2 days can be mothed into the xylem, for the near ground of the stem, root neck and root, after the moth generally down to eat the root, the deepest can reach more than 30 cm underground, a moth empty and then turn to moth root, when serious, often the root moth is eaten, and some can also eat the branch upward. The excretory holes are small, mostly on the branches about 3 cm above the ground, and the ground near them is piled with wood chips-like excrement, and the old mature larvae often climb to the holes 3-13 cm above the ground to make calcareous oblong-oval cocoon peeling pupae.
The main control is branching
1
quarantine
New tea gardens should pay attention to quarantine when introducing tea seedlings to prevent tea moths from being brought in with the tea seedlings.
2
Agricultural measures
Strengthening the management of tea gardens and enhancing tree potential are the fundamental measures to control borer pests, and the branches are found to be cut off in time and carried to the outside of the tea garden to burn.
3
Physical control
The tea moth is a pile of sand insect droppings near the pest branches, the target is obvious, the dung pile can be removed, and the larvae can be stabbed by reaching into the borer hole with a wire.
Adult tea-branched sickle moths have strong phototropism and can be booby-trapped by lighting at the peak of adult feathering. The tea moth can be gently pruned at the tea branch stage when the larvae are infested, and the insect branches can be pruned. In the early morning of the adult activity period of the tea cattle, in-work capture is carried out.
Tea bush rhizosphere soil to reduce root neck exposure and prevent adults from laying eggs.
4
Pharmaceutical control
Before the adults appear, apply whitening of the trunk and root neck below 50 cm above the ground to inhibit the laying of eggs by the adults.
Pharmaceutical control can be used in the summer management of tea gardens in May, with The combination of bacillus thuringiensis or aeruginosa combined with organic fertilizer or tea plant special fertilizer.
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