What is the schedule for the spraying of Pear Tree ?

Pear trees bloom in the spring, and pesticides are sprayed regularly to promote better flowering. For example, during the flowering period, the whole tree can be sprayed with 1000 times the main effect of cyanagen, which can effectively prevent the occurrence of pests and diseases. Generally, the best time to spray pesticides is in the morning, and preventive measures against spring cold and frost should be prepared.

Pear trees bloom in spring, and pesticides should be applied regularly and appropriately to ensure that pear trees bloom more luxuriantly. According to the growth habit, it is best to spray in the morning. Spraying 1000 times the main cyanade chloride on the whole tree at one time can effectively prevent the occurrence of pests and diseases.

Pesticide spraying should also be carried out after the pear tree blooms, which can not only effectively kill insect pests, but also improve the fruit setting rate. For example, 3000 times of imidacloprid powder can be sprayed on the whole tree, and 800 times carbendazim and 1000 times cypermethrin can be mixed to spray the whole tree.

Pear trees will experience cold and frost during the flowering period, so in order to avoid frost damage and flowering, a series of anti-freezing measures can be carried out. For example, spraying the trunk and branches with 1000 times the solution of the tree general to keep warm, disinfect and prevent frost, and prevent the reproduction of overwintering viruses on the tree.

In addition, the plants can also be irrigated in the early flowering stage of the pear tree, so that the soil temperature is greatly reduced, so as to achieve the purpose of delaying flowering. You can also use S-atrapon, which can be sprayed 1-2 times with a solution diluted 1500 2000 times with water when young buds, leaves, and buds are grown.

Three times. The first medication: in mid to late March, the average temperature within 10 days is 8, when the flower buds are just white, the whole garden is sprayed with a 5-degree stone sulfur mixture, and the control objects are mainly pear psyllid, two-spotted leaf mite, Kang's mealybug, pear yellow mealyaphid, scab, ring disease, rust, etc.

The second dose: In 90% of the pear trees (late April to early May), the drug can be avermectin, acetamiprid or one of the other agents with the same function. The main control objects are pear psyllid, pear heartworm, Kang's mealybug, pear stem bee, pear fruit bee, leaf mite and aphid.

The third dose: before the pears are bagged (late May to early June), the average temperature is 23 within 10 days. The drugs that can be used are imidacloprid, pyrethroid, methyl tobuzin, mancozeb or other agents with the same function.

The main control objects are pear psyllid, pear heartworm, Kang's mealybug, pear bifurcation aphid, leaf mites, etc.

Precautions for fertilizing pear trees.

Do not use a large amount of chicken manure when applying basal fertilizer, because the fertility of chicken manure is too large and is not suitable for large use. Pig manure is relatively mild and suitable for widespread use. We must pay attention to organic fertilizer, supplemented by chemical fertilizer.

And according to the characteristics of the tree, the amount of fertilizer is selected, the best pear trees are moderately fertilized, the worst trees are fertilized with a small amount of fertilizer, and the medium pear trees are fertilized with a large amount of fertilizer.

Excessive fertilization makes the pear tree not like to bear fruit, the fruit is too large, the peel is too thick, and the taste is sour, etc., which affects the sales of the fruit. Therefore, the amount of fertilizer and the area of fertilization must be strictly calculated before fertilization. In the top dressing of fruit expansion stage, the total amount of nitrogen, phosphorus and potassium fertilizer per mu should be controlled at 30-35 kg.

However, during the fruit-setting period, there is no need for such a large amount of fertilizer, which is controlled at 15-20 kg per mu.

Early April: Cypermethrin (2000 times liquid) can be sprayed. Early to mid-May:

It can be sprayed with 10% difenoconazole + 10% imidacloprid + avermectin. Mid-June: 25% bromonate + avermectin + cypermethrin can be sprayed.

At the beginning of July: it can be sprayed with Yibao Water Dispersible Granules + 25% Chlorpyramide No. 3.

January and early April.

1. Medication method: 40% Fuxing (8000-10000 times liquid) can be sprayed at the early flowering stage to improve the calyx removal rate of pear trees (pears); Insecticides can be sprayed with cypermethrin (2000 times liquid).

2. Control object: pear psyllid adult and other pests.

February, early to mid-May.

1. Medication method: 10% difenoconazole (3000-4000 times solution) + 10% imidacloprid (2500 times solution) + avermectin (2500 times solution) can be sprayed.

2. Prevention and control objects: pear tree scab, pear tree ring disease, pear tree elephant, pear psyllid and other pests and diseases.

March and mid-June.

1. Medication method: 10% difenoconazole (3000-4000 times solution) or 25% bromoconazole (300-500 times solution) + avermectin (2500 times solution) + cypermethrin (2000 times solution) can be sprayed.

2. Prevention and control objects: ring disease, scab, anthracnose, pear psyllid, pear heartworm and other pests and diseases.

April and early July.

1. Medication method: It can be sprayed with Yibao water dispersible granules (1500 times liquid) + 25% chlorpyramide No. 3 (2000 times liquid).

2. Prevention and control objects: anthrax, ring disease, scab, pear psyllid, mealworm and other pests and diseases.

May, mid to late July.

1. Medication method: 70% Dysenlian (800 times liquid) + 43% tebuconazole (3000 times liquid) + 40% chlorpyrifos (1500 times liquid) can be sprayed.

2. Prevention and control objects: anthracnose, ring disease, scab, pear heartworm, mealworm and other pests and diseases.

Before flowering:

Before the flowering of pear trees, it is a critical period for the control of pear bees and pear psyllid adults, spraying deltamethrin 2000 times or kung fu pyrethrin 2000 times, and at the same time treating pear aphids.

After flowering: spraying begins when 80% of the flowers fall, 10% imidacloprid powder 3000 times + 2% avermectin 2000 times + propylene zinc 800 times, which can control pear psyllid, mealworms, black spot disease, etc. This is a key medicine, and it must be sprayed well.

10-15 days after the pear tree falls flowers, the whole tree is sprayed with 800 times carbendazim and 1000 times cypermethrin mixed solution twice, with an interval of 7 days, mainly to prevent scab, mildew, scarab, chunxiang, etc. If 1500 times of imidacloprid is sprayed, it can also treat leaf miner ticks, psyllids and aphids.

Extended Information: Technical Essentials of Pear Tree Flowering Management:

1. Pollination. Many varieties of pear trees are self-flowering, or require assisted pollination or bee pollination due to poor pollination, due to small and deformed fruits. Artificial pollination is carried out in the full flowering period, with a feather duster first rolled on the pollinating tree, stained with pollen, and then transferred to the main cultivar and gently rolled.

Bee pollination is a box of bees for every 10 acres of pear orchards.

2. Thin flowers and fruits. Flower thinning should be done in the early stage of flower bud expansion or in combination with pruning. When pruning, the fruiting branches should be appropriately pruned for trees with many flower buds to reduce the ineffective consumption of flowers and nutrients in the next year.

Fruit thinning should be completed within half a month after fruit hanging. One inflorescence leaves one fruit, the leaf-to-fruit ratio is 25-30:1, and the interval between fruits is 25 cm.

Armpit flower sprout fruits, diseased and insect fruits, and dorsal fruits of thick branches should be all thinned.

3. Bagging Fruit bagging can effectively prevent pests and diseases, reduce pesticide pollution, and produce high-grade and high-quality fruits with thin skin, smooth and clean, beautiful and fine flesh. Fruit thinning is performed from late April to early May.

Spray high-efficiency fungicide before bagging, with 2000 times of pyrethroid insecticide and 1500 times of methyl tobuzin as well, and bag with spraying. Fruit bags can choose 50g single-layer blue and black paper bags. Medium and long-term storage can be used in 40 grams of blue-black paper bags.

After setting the fruit, clamp it with iron wire. After bagging, fertilizer and water management should be strengthened.

Pear tree spraying is to control pests and diseases or to protect flowers and fruits to promote growth, as long as you figure out why and what to do, you can choose what to spray.

The main diseases on the pear tree are pear scab, rust, ring disease, rot disease, etc., and the main insect pests are pear heartworm, small heartworm, hawthorn leaf mite, pear stem bee, pear aphid, pear psyllid, pear round scale, mites, etc., you can choose the right road pesticide according to the control object timely control.