The scientific name of the Pseudomonas viridis is Phassus exerescens Butler, which is also known as the pupa bat moth, bat moth and belongs to the genera bat moth, lepidoptera, and bat moth. It has a wide range of food habits. It not only damages kiwi fruit, but also harms lobelia, hawthorn, peach, cherry, pear, citron, walnut, willow, grape, apple, alfalfa and so on. The kiwifruit willow nymph occurs in all kiwifruit production areas in the country, among which the Yangtze River basin is the most common and causes the greatest losses, and is one of the important pests of kiwifruit. The benefits of prevention and control over the past 20 years are summarized below. for reference only.
First, the morphological characteristics
Adult body length 32--49mm, wings 61--90mm; body brown or dark brown, a large change, the head is small, the beginning of the adult green feather brown, after the powder brown, half-day after dark brown, mouthparts degeneration; antennae Filamentous, thin and short; yellowish-brown forewings, 7 distinct brown spots on the leading edge, no powder spots, 1 deep dark brown, slightly dark green larger triangular spot in the center of the wings, 2 wider wings outside Brown oblique tapering; outer edge has a vague and unclear broadband of broadband composition, leading to the posterior edge; hind wings slightly shorter than the fore wings, black-brown, no obvious markings, yellowish edges; abdomen long tubular, front, The midfoot is developed and densely covered with brown hairs; the male moth has dense orange-yellow brush-like hair on the back of the foot. Oval, about 0.7mm long, colostrum white, later turned black. The mature larvae have a body length of about 50mm, a reddish-brown head, a white body of contaminated body, and a cylindrical shape. The body surface has large and distinct yellow-brown lumps and hairs, and each of the abdomen has eight knots with a large sliver.
Second, the law of occurrence and damage characteristics
The larvae damage the branches, stems and roots of kiwifruit. The eggs hatch on the ground, trunk gaps and larvae in the feeding tunnels at the base of the trunk, and hatch in mid- and late April of the following year. The first-instar larvae were mainly fed humus. After the second instar, the young larvae were grazing. The saplings were firstly infiltrated from the base of the tender or relatively tender stems, and they were grazing on the nets, sticking into nets and concealing foraging. The instar larvae cannot harm old branches, old stems, and old roots. Larvae sometimes bark into a ring, and then feed on the pith or down to feed directly to the roots, affecting the transport of water and nutrients, resulting in dry branches or branches of the wind break. Older larvae often excrete a large amount of dung in the sacral hole, and the sacral hole is often deformed and easily broken. Adults generally appear from mid-August to early-September. The area north of the Yangtze River occurred in 1 year in 2 years and the area south of the Yangtze River was 1. The first generation occurred in one year, and the second generation occurred in two years in Hubei, Henan, Sichuan, Shanxi, Guizhou, and Yunnan. The vast majority of Jiangxi Province occurred in one generation in one year. The North did not see the economic impact of large areas. Southern mountainous areas and hilly areas are generally harmed and severe, and the plains or the cultivation areas with few or no shrubs are harmless or not. In general, the foothills and valleys are seriously detrimental. The fertile soil is heavier than the poorly soiled ones. The poorly pruned garden is worse than the plastically manicured garden. The windward place is lighter than the lee place, and the shady slope is heavier than the sunny slope. In Fengxin, Yifeng County, Pingxiang City, and Jingshan City, Jiangxi Province, there are a large number of broad-leaved mixed shrubs in the cultivation area, and the affected trees often reach 30% to 50%, and some reach 85%. The first 7-8 years after the planting of the kiwifruit was the peak period of damage, but it was less serious after 8-9 years. Some of the barren hills in the mountains and hills suffer the most, often reaching 90% of the trees, and 30%-40% of the branches.
Third, comprehensive prevention and control technology
1. Clear the broad-leaved mixed bushes around the kiwifruit garden before or after the establishment of the park or carefully spray the insecticides on the orchard around the orchard around mid-April each year to eliminate the newly hatched larvae.
2. Strengthen the management of orchards, timely cultivating weeds, shaping, pruning, and eliminating the emergence of barren gardens. 3, pay attention to the protection of insectivorous birds, predators or parasitic insects (Cockroach), can inhibit the occurrence of willow moth.
4, combined with winter pruning, the victims will be concentrated and burned in time.
5, kiwifruit often inspect the garden (tree) during the growing season, and found that the trunk (branch) base pest package timely tear, with fine iron wire to insert wormholes, kill larvae, can also be used 50% dichlorvos 50 times into the wormhole, Or use a cotton ball to pour the liquid into the bore, or use 0.1g per hole in the aluminum phosphide tablet. After blocking the mouth with wet earth, kill the larvae in the borehole.
6. In mid-April, spraying 10% cypermethrin 2000 times solution or 50% carfenthine WP 1000 times solution or 90% more dipterex 1000--1500 times solution on the ground of the canopy and the base of the trunk will have better control effect. .
Professional aging products are based on "knowing the old and understanding the old". The design of aging products should meet the real needs of the elderly, facilitate the care needs of nursing staff, and adapt to the home-based elderly care environment.
The characteristics of the elderly are aging of the lumbar spine, discomfort of the cervical spine, osteoporosis, and fatigue. Therefore, it is particularly important for the elderly to protect the waist and neck to delay the aging rate and reduce the incidence of diseases and accidents.
First, the backrest of the Chair is large and strong, and it is equipped with armrests, so that the waist of the old man is close to the back of the chair and can support the head and shoulders of the old man.
Second, the height of the chair should be at the same level as the knee, that is, when the old man is sitting, his feet can be placed flat on the ground. At the same time, the length of the chair seat should be the same as the length of the old man's hip to knee, so that the knee joint can be maintained at about 90 degrees, and the ankle joint can be in a natural drooping rest state.
Third, the chair should have some weight, and 3-4 kg is the best. If it is too light, it is difficult to maintain certain stability and easy to slip. The chair material should not be too soft.
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