How to deal with the poplar of the walnut tree and how to manage the walnut tree?

The scientific name of the spicy is the green thorn moth or the yellow thorn moth, the larvae have poisonous hairs, and they will be very itchy when touched. The larvae of the stinging moth are very sensitive to pesticides, and the existing pyrethroid pesticides such as cypermethrin, deltamethrin, etc., as well as avermectin, can be effectively killed; If it is prevented with chlorpyramide, the effect is better, not only will it not harm walnut trees, but also will not hurt passers-by, and there is no harm to humans, animals and natural enemies.

Walnut tree management is divided into four seasons of spring, summer, autumn and winter, and the specific operations are as follows:

1. In spring, before and after Qingming, the management of whitening, base fertilizer, watering, pest control, plastic pruning and so on is mainly carried out.

In early spring, the branches are whitened with the "tree guard", and then sprayed on the whole garden, which can not only disinfect, prevent frost, keep warm and eliminate overwintering pests and diseases, but also restore the early awakening of the walnut tree's life system. For the orchard that has not been fertilized in the previous year, it should be applied immediately after the soil thaws, and the orchard should be watered once if there are irrigation conditions after fertilization, and shallow hoeing should be carried out in time to protect moisture.

There are relatively few pests and diseases of walnut, common ones are rot disease, canker disease, beetle, inchworm, scale insect and other pests and diseases, spray 1500 times of killing inulin when the larvae hatch in early spring to early summer, which can control pests such as beetle, inchworm and scale insects. Continue pruning work for orchards that have not been pruned in the previous year.

2. In summer, before and after the summer solstice, pest control, pruning, weeding and composting are mainly carried out.

Summer is the most vigorous period for walnut trees, during which the growth and development of the tree directly affects the formation of the tree, the early and late fruiting and the level of yield. Therefore, it is necessary to increase the top dressing in summer, generally apply 100 to 500 grams of nitrogen fertilizer (urea, ammonium bicarbonate or ammonium sulfate) per young tree, and can use radial, hole-like, furrow-like fertilization, with a depth of 30 cm, and cover with soil after application. At the same time, according to the flowering and fruiting situation of the orchard, top dressing outside the roots before flowering, young fruit stage, and fruit expansion period, spraying foliar fertilizer + "melon and fruit strong Tiling" to protect flowers, strengthen fruits, promote fruit expansion, and prevent fruit dropping.

Pay attention to the prevention and control of pests and diseases in June and July. In addition, pruning is carried out during the growing season, and the stem height is maintained at more than 3m. Do not prune after falling leaves, otherwise it is easy to cause damage and affect the growth of the tree.

In summer, some short-stalk crops such as soybeans, potatoes, melons, peanuts, etc. can be selected for intercropping, and top dressing, irrigation and drainage, loosening soil and weeding can be carried out at the same time to achieve the goal of double harvest of fruit and grain.

3. In autumn and winter, it is mainly managed by cultivating, weeding, plastic pruning, pest control and so on.

The pruning period and main task are carried out after the walnut harvest and before the leaves turn yellow (mid-September to early November), mainly to thin the over-dense branches and shading branches; retract drooping branches; Adjust the structure of the tree skeleton. In addition, autumn pruning promotes strength, suitable for the pruning of weak trees, old trees, and walnut trees on the slopes. The wound caused by pruning is protected with a "callus antiseptic film" to promote wound healing as soon as possible.

4. Winter is the hibernation period of walnut trees, mainly for the management of repairing weirs, watering gardens, and applying base fertilizer.

During the winter dormancy of the tree, the walnut has a wounded flow, so it is not suitable for pruning. Sufficient irrigation before soil freezing, combined with the application of basal fertilizer in autumn, can promote root absorption, increase the accumulation of stored nutrients, and improve the accumulation level of tree body.

Tape the wound and peel it off, or you can apply toothpaste.

After killing it, apply the liquid from its body to the affected area.

Tape the wound and peel it off, or you can apply toothpaste.

Yang Lazi, also known as star anise and stinging caterpillar, is a common name for the larvae of the stinging moth. It can be subdivided into yellow thorn moth, brown thorn moth, green thorn moth and flat thorn moth, among which yellow thorn moth is the most common.

It is one of the important pests of forests, economic forests and fruit trees, harming more than 90 kinds of plants such as jujube, walnut, persimmon, maple poplar, apple, poplar, etc., and can eat the leaves into many holes, missing or leaving only petioles and main veins, which seriously affects the tree potential and fruit yield.

The morphology is an example of the yellow thorn moth: the larvae are 19-25 mm long and thick.

The head is yellowish-brown and hidden under the chest. The thorax is yellow-green, and the body is from the second segment, and there is a pair of technical spines on both sides of the dorsal line of each segment.

The third, fourth, and tenth sections are large, and there are black prickly hairs on the technical thorns;

There are large purple-brown markings on the dorsal part of the body, broad anteriorly and anteriorly, a middle narrow dumbbell-shaped, and 4 small brown spots on the back of the distal segment; There are 9 thorns on each side of the body, and there are 2 blue longitudinal stripes in the middle of the body, the upper valve line is pale blue, and the lower valve line is pale yellow; No gastropods, replaced by suction cups; Instead of crawling, you are sliding when moving.

The stinger is poisonous, and it causes severe pain and itching when touched. The mature larvae overwinter in the branches, branches or on the thick bark of the trunk, the cocoon is grayish-white, millimeters long, the texture is hard, the surface is smooth, there are several brown longitudinal stripes of different lengths on the cocoon shell, resembling a finch egg;

Cocoon, also commonly known as Yang La jar, after removing the jar, pluck out the only few remaining hairs, and get cooked to eat.

1. Observe under a magnifying glass first, scrape off the poisonous hairs with a blade in the direction of the poisonous hairs, and then apply 3% ammonia to the affected area.

2. Nantong snake medicine can be used to apply the affected area externally, or it can be mashed with seven leaves and a branch of flowers or fresh purslane, and applied externally.

3. When the wound is ulcerated, apply antibiotic ointment.

4. When there are systemic symptoms, symptomatic treatment can be given.

First, use scotch tape to stick the stung area, and if it is not easy to use medicine, just stick it with tape all the time.

Stick it to the bitten area with scotch tape, quickly peel it off, and stick it twice more!

What should I do if I was stung by a foreign spicy man in the countryside? Farmers solve it in one move.

Spicy Seeds [**Treated after being stung].

1.The poison of spicy peppers is acidic. The affected area can be applied with thick, soapy water. Can be repeated once. Generally, it will be relieved in about ten minutes.

2.The Chinese medicine laryngeal pill is crushed and applied to the affected area with water.

3.If you have fever, joint swelling and pain and other systemic symptoms, you should go to the hospital**.

You definitely have to choose my answer for this! It's very simple, wipe the stung area with its body fluids after killing it, and it will be painless and itchy within 1 minute! Not much to say, not a joke.

The local method at our home is to find thatch and press it on the stung place, or apply wind oil essence or cool oil!