About Macadamia leaf miner control

(1) Injury characteristics: The main damage to the leaves, the insects can be harmed throughout the year, generally damage the lush parts of the plant, such as new shoots, severe damage, leaf surface, leaves full of insect road back. After a long period of damage, the entire tree became mottled and burned, plant growth was hindered, and further damage caused the shoots to recede and reduce yield.
(2) Morphological characteristics and living habits: adults: brown, silver-white bands on the front wing, 8 mm wingspan. Adults are active at night and can occasionally see their activity at the tip during the day; eggs: oval, about 0.5 mm in size 0.4 mm, on the foliage, like a bright small droplets, eggs scattered production, mainly produced on the upper surface of the tender leaves, a In 50 mm long leaves, 96 eggs can be laid. Larvae: divided into 5 instars, the first 3 instar larvae mouth flat, knife-shaped, can cut off the epidermis of the leaf sucking juice, to the second instar, the mouthparts sharp, chewing shape, can be sneaked into the mesophyll tissue to take juice. When the larva first hatched, it crossed the bottom of the egg shell and dipped into the leaf for feeding. Soon, the curved vesicular wormholes appeared on the leaves. At this time, the larvae were about 0.2-0.1 mm long, and when the young skin was second, the length was 0.6 mm. . By the third instar, the larvae had a large food intake, and single larvae could feed 200-300 square meters of leaf tissue. When more than one pest is at the same time, the blisters can extend to the entire leaf. Mature larvae are often hidden inside the transparent brown bubble worm on the top. The larvae hatched greenish green and then became white. They gradually turned yellow. Sometimes dark backgrounds were visible. The last instar larvae appeared gradually with red ribbons. The mature larvae left their damaged parts and went to the ground to search for the branches and leaves. .蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在.
(3) Life history: The whole life history in summer is 19-23 days, and in winter it is 50-53 days. In summer, it takes 3-4 days for the eggs to hatch, and it takes only 4 days to hatch from the eggs to the large ones.
(4) Control methods: Use 30% acetophos 500-750 times solution, or 40% methionine 1000 times solution, or 20% Confod 2000-2500 times solution spray.

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