How to prevent and control jujube tree green blind tsubaki elephants?

Affected by the rainfall, most of the overwintering eggs of the green blind tsubaki elephant absorb water and swell, reaching the peak of hatching around May 20, I hope you can seize the time to spray pesticides for control. Try to achieve unified medication to achieve better prevention and treatment effects. The agent can be selected with 35% streak suspension 6000 times liquid or 70% streak suspension plus 30% chlorpyrifos aqueous emulsion 1000 times liquid, or 10% imidacloprid 1500 2000 times liquid + cypermethrin 2000 3000 times liquid, or 50% Tsubaki aphid without a trace 1500 times liquid + 80% dichlorvos 1000 times liquid.

The spraying time should be before 10 a.m. and after 4 p.m., but the temperature should not be too low, otherwise it will affect the efficacy. Because the green blind Tsubaki is generally lurking on the weeds under the tree and the crops between the rows during the day, and the damage is only on the tree at night, therefore, when applying pesticides, it is necessary to focus on spraying the trunk, underground weeds and inter-row crops, so that the trees and trees are sprayed strictly and completely, so as to achieve the best purpose.

Most of the jujube tree green bugs overwinter with eggs in the broken branch section and phosphorus marks, warped bark, more than 95% of the jujube orchard is overwintering on the tree, rarely overwintering under the tree, the incubation time is different from place to place, but the jujube bud germination period is the peak of incubation, this period will be concentrated in case of rain, and 3 days after the rain is the best control time. The best agents are organophosphorus pesticides such as malathion, chlorpyrifos, dichlorvos, etc., and the compound of pyrethrin can improve the control effect. But the specific drug is fipronil.

It has been observed that the jujube tree green bug has strong daytime activity, no habit of lying and emerging at night, and the top of the tree is far more harmful than the lower part, so the best application time can be at any time during the day, and the upper part of the tree body should be sprayed.

Spraying medicine is very easy to cure I have hundreds of precocious trees in my house, as long as you observe it well, use the corresponding medicine, no problem.

Now it's the flowering period, use some medicine that doesn't hurt the flower, poison tip, drop a drop, and the sun comes out to spray.

Control methods: (1) Eradicate weeds and eliminate overwintering insect eggs.

2) After the hatching of the overwintering eggs in early spring, spray the overwintering crops with 40% dimethoate 1000 times, 25% deltamethrin 2500 4000 times, and 20% 2000 3000 times of diene emulsifiable concentrate. After the larvae go up the tree, they can also be poisoned and controlled with the above drugs.

The green blind tsubaki elephant belongs to the order Hemiptera, the blind bug family. It is distributed in the south of the Yangtze River and all parts of North China, and is an important pest for jujube production in recent years. In addition to harming jujube trees, it also harms apples, pears, hibiscus and other forest fruits, cotton, sugar beet, tea, tobacco, broad beans, alfalfa, various grasses, etc., and the hosts are extremely wide.

Nymphs and adults suck the juice of young shoots, leaves, flowers, fruits, and twigs of plants, and the damaged young shoots and leaves first appear dead small spots, and as the leaves grow, the dead spots expand, and the leaves appear irregular holes, making the leaves incomplete, commonly known as "leaf madness"; After being injured, the jujube hanging is curved, like a perm; The flower buds dry up and fall off after being damaged; The affected fruit surface of young fruits has protruding protrusions and brown spots, and in severe cases, they fall off or become infected, and many diseases are spread from this.

1. The field is reasonably arranged, and the favorite crops of blind elephants are not planted around the cotton field.

2. After cotton harvest, the cotton stalks should be pulled out in time, weeds should be removed, and the source of overwintering insects should be reduced.

3. Do a good job in pruning and chemical control of cotton fields. Remove the clumping branches as soon as possible and leave 1-2 strong branches for the multi-headed cotton that has appeared, which can accelerate the growth of cotton plants and reduce losses.

4. Early spraying prevention and control, and pay attention to the following points: (1) The prevention and control period should be reasonable. In the early stage of the occurrence of the blind tsubaki, the control of pesticides should be started as far as possible in the nymph stage of the blind tsubaki to avoid the migration of adults.

2) Choose the right prevention and control agent. After the prohibition of high-toxicity organophosphate agents, the most effective agent for the prevention and control of blind elephants is 80% Ruijin special water dispersible granules, the dosage per mu is 2 grams, and the water is sprayed uniformly, and the control effect on blind elephants can reach more than 95%, and the special effect period is 20-22 days. (3) Select the prevention and control period.

Blind elephants begin to harm cotton from mid to late May, so they should be sprayed from around May 20 to prevent and control, spray 80% Ruijinte every 20 days, and spray 3-4 times throughout the growing season, which can well prevent the damage of blind elephants. (4) According to the living habits of blind tsubaki elephants, when spraying pesticides for prevention, they must be sprayed evenly and all sprayed to improve the control effect.

5. It is very important to do a good job in unified prevention and control. Seize the opportunity to carry out targeted prevention and control work.

Green blind bugs belong to the order Hemiptera, blind bugs, commonly known as cotton green blind bugs, mosaic insects, small bed bugs, etc. It occurs all over the country, and the occurrence in the jujube area of the Yellow River Basin is large and the damage is serious. The green bug is a multi-host pest, which sucks plant juice with its stinging and sucking mouthparts, and the phenomenon of leaf breaking occurs after the plant is damaged, commonly known as "head-breaking madness" and "leaf-breaking madness".

In addition to jujube trees, the insect also harms cotton, alfalfa, beans, potatoes, wheat, field cyanine, carrots and a variety of fruit trees and other plants. Green blind bugs occur on jujube trees, and adults and nymphs concentrate on the buds of jujube buds to damage young leaves, buds and flowers.

1) Morphological characteristics Adult body length 5 mm, width 22 mm, green, dense short hairs. The head is triangular, yellow-green, the compound eyes are black prominent, the antennae are 4 filamentous, the length is 2 3 of the body length, the second segment is longer than the sum of the segments, the color from the first segment to the fourth segment changes from light to dark, the first segment is yellow-green, and the fourth segment is black-brown. The dorsal plate of the prothorax is dark green, with multiple small black dots on it, and the anterior margin is broad.

The small shield is triangular, slightly protruding, yellowish-green, **with 1 light longitudinal stripe. The forewing diaphragm is translucent, dark gray, the feet are yellowish-green, and there are brown ring spots at the end of the hind leg segments, and the hind leg segments of the female are shorter than those of the male, and the ends are black.

The eggs are 1 mm long. Yellow-green, long pocket-shaped, the eggs are slightly curved like bananas.

Nymphs 2nd instar nymphs yellow, 3rd instar wing buds, 4th instar wing buds over the first abdominal node The tips of the antennae and the ends of the feet are black-brown, the 5th instar nymphs are similar to adults, the initial green, the compound eyes are pink, and the whole is bright green, densely covered with black fine hairs, the antennae are egg yellow, the tips are darker, and the eyes are gray.

2) Habits and occurrence rules 3 4 generations occur in the north every year, 6 7 generations in the south, the eggs are overwintered in alfalfa, castor stalks, stubble, fruit bark or broken branches and soil, and the average daily temperature reaches 11 for 5 consecutive days in March and April of the following spring, and the eggs begin to hatch when the relative humidity is higher than 70%, and live on alfalfa and other plants first. When the jujube tree germinates, it flies to the jujube bud for damage, and then it is harmful to the flower. Adults have a long lifespan, uneven occurrence, strong flight power, like to eat nectar, begin to lay eggs 6 7 days after emergence, the oviposition period is 30 to 40 days, non-overwintering eggs are mostly scattered in young leaves, stems, petioles, tender buds and other tissues, exposed yellow egg cover, egg period 7 9 days.

3) Prevention and control methods Agricultural control In spring, the bark is carefully scraped and burned, and the jujube orchard is deeply cultivated and irrigated before winter, and the weeds in and around the field are removed, which can reduce the overwintering insect eggs.

Chemical control aIn the early spring when the eggs hatch at the peak of the peak period, spray 1500 times cyhalothrin) emulsifiable liquid, or 1200 times 20% acetamiprid solution, or 2000 times 10% imidacloprid solution, or 1500 times 48% chlorpyrifos emulsifiable concentrate solution to eliminate the newly hatched nymphs.

b.During the germination period of jujube trees, spray 1500 times 48% chlorpyrifos EC or 3000 times 2% avermectin solution, which not only does not harm natural enemies, but also can treat aphids and red spiders.

Physical control Every 50 acres install 1 "Shennongle" automatic physical exterminator, using the phototaxis of the insect to "shock" the adult.

The green blind tsubaki elephant, also known as the blind tsubaki elephant, is a jujube sucking mouthpart pest. It pierces the young buds of the jujube tree with the stinging and suction mouthparts, absorbs the juice of the sap of the sap of the sap branches, and the damaged jujube buds cannot germinate for a long time, and the leaves are uneven after germination, and there are many holes of different sizes, which seriously affect the development of jujube buds, leaves and flower buds. The leaves are damaged, and the photosynthetic capacity is reduced, resulting in a significant reduction in yield.

In the later stage, the fruit is sucked, resulting in deformed fruit. It can also spread the virus. Make jujube have fruit shrinkage disease.

The insect occurs 4-5 generations in 1 year, overwintering in the cracks of the plant stem and bark with eggs, and the average temperature reaches 10 in the next spring, and the eggs begin to hatch for the nymphs to be coarse and envy on the tree.

Prevention and control methods: completely remove the crops and weeds in the jujube orchard in winter, burn them intensively, eliminate the overwintering eggs, spray 1000 times 40% dimethoate oxide or deltamethrin 3000 times on the tree during the budding rock shoot of jujube trees in late April to early May, 1 time in 7-10 days, and spray 2-3 times in a row.