Control methods of heart-eating insects

Heart-eating insects are insects of the family Lepidoptera, with many species. The hosts are mainly peach, plum, apricot, begonia, cherry, cotton and so on. Usually, the larva is cylindrical, and the pupa is long spindle-shaped, brown. The larvae drill into the fruit or pod to eat fruit or beans. They are pests of fruit trees or legume crops. Let's take a look at the control methods of heart-eating insects.

Physical prevention and cure

1. Many pests have phototaxis. Black lights are installed in orchards, which can trap and kill many kinds of pests, such as pear heart borer, peach borer, cotton bollworm and so on.

2. Sweet and sour liquid can be killed with 1 part of sugar, 4 parts of vinegar and 16 parts of water, and then add a small amount of trichlorfon to prepare sweet and sour liquid and put it in a bowl, hang it on the tree, induce adults to feed and kill it, such as pear heart borer, peach borer, cotton bollworm and so on. Rotten fruit can also be placed in a jar to make fruit vinegar.

3. During the occurrence period of cotton bollworm, poplar, willow, Toona sinensis and other branches were inserted around the orchard, and several branches were made into one hand. the adult cotton bollworm drilled into the handle and killed in the early morning.

Drug prevention and treatment

The main results are as follows: 1. once the heart borer is eaten into the fruit, it can not be controlled, so mastering the accurate control period is the key to control this kind of pest. For pear heart borer, peach heart borer, peach borer and so on, sex attractants can be hung in the orchard, and the number of insects can be checked every day. Generally 15 mu of orchards can be hung. When the number of trapped adults increases sharply, the egg fruit is checked every 3 days, and the chemical control can be carried out when the egg fruit rate reaches 1%.

2. The main types of insecticides for heart borer control are pyrethroid pesticides, such as 20% permethrin, 2.5% deltamethrin, 10% cyhalothrin, 20% cypermethrin, 2.5% kungfu or 21% cypermethrin. If the occurrence of spider mites at the same time, you can use both antidote and kung fu.

3. Peach beetles from overwintering cocoons to pupation cocoons on the ground can be controlled on the ground. 25% phoxim microcapsules 0.5 kg per mu plus 150 kg water are sprayed under the canopy, then shallow hoe into the ground, or 4% enemy horse powder is used. 0.25 kg of medicine per tree can kill the unearthed larvae, usually once every 15 days.

Biological control

The main results are as follows: 1. The predatory natural enemies of heart-eating insects are lacewings, ladybugs, flower bugs, spiders, walking beetles, ants and so on.

2. The parasitic natural enemies of heart-eating insects, such as Trichogramma, Pear, Peach, Pear, Peach, Peach

3. Do not use total killing agents when natural enemies occur frequently, but try to use other methods to control or avoid the occurrence of natural enemies, so as to give full play to the role of natural enemies in controlling insect pests.

Artificial prevention and cure

1. Scrape off the rough bark of the trunk over the winter and eliminate the overwintering pear heart borer and part of the peach borer. In August, grass rings were tied to the tree trunk to lure the larvae into the winter and burn in winter.

2. Clear the garden in winter, sweep the fallen leaves and weeds, deal with all kinds of crop straw and sunflower disk, burn and kill the overwintering peach borer and other pests.

3. Combined with pruning, the overwintering buds of pear heart borer were cut off. The key measure to eliminate pear heart borer is to thoroughly pick and deal with the fruit of pear heart borer from the period of damage to fruit to before Eclosion (before wheat harvest).

4. Pick and pick up all kinds of fruit damaged by heart borer at any time, and cut off the peach tip in time and burn it when the pear heart borer harms the peach shoot from May to June.

5. when planting tree species reasonably, the pear heart borer has the habit of transferring its host, eating peach shoots in the early stage and pear fruits in the later stage. Therefore, when planning the orchard, try not to mix or adjacent peaches and pears.