Scientific name Lygocoris (lygus) lucorμm Meyer-Dur belongs to hemiptera, Lepidoptera. Alias ​​cotton blind lice, blind pheasant, pansy, Tiangou, small bugs and so on. Distributed throughout the country.
The host mulberry, tea tree, cotton, hemp, etc., has now become one of the important pests in China's mulberry cotton and mulberry mixed areas.
Characteristics of Injury One-year-old nymphs from the mulberry tree take a sap from the outside of the mulberry tree. As the saplings grow, they gradually enter the open buds and suck, resulting in dark brown punctures or holes, and many holes appear in the whole leaf. Causes malformed or broken mulberry leaves, affects photosynthesis and mulberry fertility, reduced production by 16% to 20%.
Morphological characteristics can be seen in the cotton pest, a green-clear bug. Living habits 3 to 5 generations old, wintering on the pith or weak branches of mulberry trees, wooden molds, eucalyptus, peach trees, acacia and other woody plant pile sections, but also in the grass, grasses and other miscellaneous Winter on the grass. In the middle of April of the following year, when the saplings were dislocated, the wintering ovum of the green plague began to hatch, and the larval hatching also entered the peak period. At this time, the nymphs were transferred to the weeds such as broad beans and pods at the end of the first instar stage. , has been developed to adult. The first generation of adults laid eggs on a variety of hosts in mulberry fields, and the second generation eggs hatched nymphs continue to injure the mulberry trees, and subsequent generations were harmed on cotton and other crops. The eggs lay with tenderness and greenness, and the eggs were mainly produced in tender stems, petioles or leaf margins. The newly hatched nymphs showed marked tenderness. Overwintering eggs tend to dry out and many eggs are produced in the pith section of the dry plant. Natural enemies mainly include small flower worms and proboscis ladybugs.
Prevention methods (1) Planting mulberry area should pay attention to planning to keep it away from cotton, hemp, and vegetable gardens. (2) Plant green manure around the mulberry garden, set up the transition zone for the insects to fly, and spray insecticides and bury green in the middle and late April. (3) When the wintering eggs have not yet hatched, the dead branches of the green-lipped lice eggs are cut off and the eggs are cut out, and burned in time. (4) Spray 50% dichlorvos EC 1000 times or 40% dimethoate EC 1000 times, 48% chlorpyrifos EC 2500 times, 10% imidacloprid WP 2000 times, 5% Special suspension agent 1500 times, 60% double-effect phosphorus emulsifiable concentrate 1000-1500 times, 25% ikaka emulsifiable concentrate 1500 times.
Ultrasound System,Ultrasound General Images,Ultrasound Imaging Device,Ic Enter Integrated Ultrasound
MinFound Medical Systems Co., Ltd , https://www.minfoundmed.com