How can I protect my fruit trees from insect infestation?

I am planting apples, in the management process of apple trees, the prevention and control of insect pests is an important link, the subject said not to be eroded by pests, this I think it is unrealistic to fully realize, only in the process of management according to the law of pest occurrence early prevention, reduce the number of insect population in the orchard, reduce the harm caused by pests to the orchard. Pest control measures in orchards. On the apple trees I planted, there will be a lot of pests, common aphids, mites, heartworms, moth pests, elephant pests, scale pests, etc., according to the law of pests, we usually take physical control, chemical control, release of natural enemies and other measures to prevent and control.

First, physical prevention and control.

There are many methods of physical control of pests, the advantage is that there will be no residue, and the disadvantage is that the control effect is often not as fast and thorough as chemical control

Artificial extermination of overwintering pests. For example, scraping the bark in the spring to eliminate the overwintering pests and eggs, and tying grass in the autumn to attract pests into the winter.

Traps trap to kill insects. For example, trapping pests with black lights, decoyants, etc.

Fruit bagging. Fruit bagging is now used a lot, for example, the apple bagging I grow can effectively prevent the damage of heart-eating insects.

2. Chemical control.

Mainly through pesticide control of pests, this is now the main method of pest control, the control effect is fast, but now due to the continuous reuse of insecticides, many pests have produced a certain resistance, and improper use of drugs is easy to cause harm to fruit trees, so more attention needs to be paid to the selection of pesticides and application methods.

Now the application of pesticides is the most spraying, the best time is when the pests overwinter sting or hatching, and then according to the orchard pests and the life of the pests, for example, at this time, apple trees should focus on the prevention and control of mite pests and moth pests.

3. Release natural enemies for prevention and control.

Now in our application here is relatively rare, over the years a large number of pesticides have been used. The elimination of a large number of natural enemies of pests is also one of the reasons why pests are becoming more and more difficult to treat. But releasing the natural enemies of pests is a good way, even if you can't deliberately release the natural enemies of pests, it is also important to pay attention to protection when spraying.

For example, there are a lot of aphids on our apples, so we should pay more attention to protecting ladybugs, lacewings, aphid-eating flies and other insects that feed on aphids, which can have a good effect on the control of pests.

All in all, if you want to keep fruit trees from pests, you must start from many aspects, whether it is physical control, chemical control, suitable natural enemy control, there are certain advantages and disadvantages, and the combination is the best.

If you want to keep your fruit trees free of pests, it is important to do a good job of weeding in the orchard at the beginning, because there are many insects that lay eggs in the grass, and if they are not cleaned up, a lot of insects will grow. After taking care of the weeds, you have to turn over the land, beetles, needleworms and other pests will lay eggs in the land in winter, and deep ploughing is conducive to cleaning up the pest eggs. It is best to expose the soil to the sun for 2 to 3 months, of course, if possible, the longer the exposure, the better, to kill harmful bacteria and pests, and at the same time, it can also allow the growing roots of our fruit trees to absorb more nutrients.

If the land is irrigated well, it can also suffocate some of the pests and eggs present in the soil. For example, filling frozen water can kill aphid eggs on the roots.

In order to improve the ability of fruit trees to resist insect pests, we must ensure that fruit trees have sufficient nutrition, apply more organic fertilizer and apply humic acid and other biological agents, adjust the balanced nutrition of fruit trees, and regulate the tree potential, which can not only prevent pests but also improve yield.

It is impossible to prevent it completely, and it can only be prevented as early as possible in the process of management according to the law of pest occurrence, so as to reduce the number of insect populations in the orchard and reduce the harm caused by pests to the orchard.

1. Bagging the fruit to prevent the oviposition of fruit borer pests, when the fruit grows to a certain extent, the fruit is bagged with a relatively transparent bagging, which can well prevent the harm of pests and diseases, and at the same time, because the physical control method can avoid pesticide residues, it is a green pest control method.

2. Brush glue or whitewash on the trunk. It can effectively prevent and control the damage or spread of pests and diseases, and on the one hand, it can prevent pests from climbing on the fruit trees below the brush site to cause damage; On the other hand, for fruit trees that have been harmed by pests and diseases, the brushing tape can effectively prevent the pests on the pest trees from spreading to other fruit trees that are free of pests and diseases, and it is a kind of protection for other fruit trees.

3. Lights trap and kill insects. Fruit tree pest control methods and techniques of light trapping and killing insects, using the phototaxis of pests, using 20W black light combined with inducers to trap and kill orchard pests at night. If necessary, a power grid can be added close to the lights to improve the effect.

1. If the rainfall is heavy in early autumn, some unbagged orchards are prone to rot disease, and after the onset of the disease, 600 times of the liquid 50% carbendazim plus 600 times of the liquid Plague Frost plus 1000 times of the liquid to help kill, spray once every 7 10 days.

2. In early autumn, pear orchards are prone to scab, prevention and control methods: spray 2000 times of Teprazole or 25% difenoconazole 8000 times every 7 10 days. Orchards that have not yet developed the disease should be sprayed with absorbent fungicides immediately after rain, such as 50% carbendazim 600 times liquid, 80% epidemic frost 600 times liquid, 70% methyl tobuzine 800 times liquid, Fuxing, etc.

3. Peach fruit is prone to scab and gum disease, and should be prevented by using cythycozone 800 times solution or 50% dysen zinc 500 times solution. 7 to 10 days before picking, spray phenoxycarb perchlorine to control pear heartworm and peach borer. After fruit picking, the leaves should be protected, and the perforation disease should be prevented with zinc ash solution, and the stinging moth and leaf roller moth should be sprayed with 1500 times of cypermethrin and 2000 times of Lesben for control.

1. Qingyuan. Combined with pruning, the insect branches are cut off, and the weeds, fallen leaves and diseased branches in the orchard are removed, and they are burned intensively; Trunk protection. Scrape off the old warped skin and apply whitening agent (12 kg of quicklime, kg of salt, kg of soybean flour, kg of stone sulfur mixture, 30 kg of water).

2. In the adult occurrence period, the adult insect is manually killed.

3. Using the phototaxis of adults, hang black lights in the forest to trap and kill them at an interval of about 150 meters during the adult emergence.

4. During the oviposition period of the adult worms, check the trunk frequently, and if there is saliva-like glue, immediately use a knife to pick out the eggs and crush them. At the same time, it is carefully sprayed around the main trunk, and can also be sprayed with octythion, or chlortium, to kill adults, eggs, and larvae that have just hatched but not penetrated into the cortex.

5. During the oviposition period of adults, spray 1000 times of 30% anti-enemy suspension agent + organosilicon additives around the main trunk to help kill adults, eggs and larvae.

6. After the larvae are bored into the trunk, where there is fresh feces outside the cavity, there must be live larvae inside, and the insects will be stabbed to death by poking the holes with thin steel wire or bamboo sticks, and those who can't be pierced will be dipped in 400 times dichlorvos liquid with cotton balls and stuffed into the cavities, and the external ones will be coated with soft mud.

Fruit tree root borers can be cut into 15-20 pieces of mothballs, stuffed into 3-5 grains in the moth-eaten hole, sealed with yellow mud, the insecticidal effect can reach more than 85%, 7-10 days later, check again, if there are new feces and wood residue, you can do it again according to the above method.

Spraying pesticides is generally more difficult to spray directly to pests, generally in autumn and winter, before the spring fruit trees sprout, clean up the damaged branches of fruit trees, and spray 3 5 Baumé stone sulfur mixture, after the spring fruit trees germinate, spray 200 300 times the fruit tree as a whole liquid Bacillus thuringiensis, kill the larvae in the incubation period, the initial hatching pests, has not yet drilled into the trunk, easy to control. Especially in grapevines, spray Bacillus thuringiensis in time in spring to control the moth in grapes.

1. Mothballs treat dry worms

Dry-eaten pests such as bare-shouldered star beetle and mulberry beetle are controlled with mothballs, which is both economical and effective. The method is: cut the mothballs into soybean-sized pieces, find the holes where the dried pest larvae have newly chewed wood residue or newly discharged feces, dig out the feces or wood residues, stuff 3 5 mothballs into the hole, and then seal them with yellow mud to prevent air leakage, and the insecticidal effect is generally more than 85%.

7 Check once after 10 days, and if there is new feces and wood residue discharged, do it again according to the above method.

2. Plywood traps microscopic insects

Coat the orange-yellow paint on both sides of the larger plywood, and then apply a layer of engine oil and butter mixer after drying, and scatter it in the orchard, aphids, whiteflies, American spotted divers and other pests will cast themselves into the net, and the effect of changing the paint and mixing oil once a week is better.

3. Use rotten fruit to trap the golden tortoise shell

Use ripe and sour figs, rotten watermelon, etc., and sweet and sour liquid (brown sugar, vinegar, water ratio is 1:3:16) together into the pottery bowl, support distributed in the orchard, the gold tortoise shell will fly into the pottery bowl when it smells the smell and be drowned, and the gold tortoise shell in the bowl can be collected every 2 3 days.

4. Tie grass to the trunk to remove insects

From late August to early September, leaf miners, leaf rollers, spiders, pear heartworms and other pests gradually look for or dive under the tree to find a suitable wintering place.