Weibei Apple Tree July Management Points

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First, the management of small hot summer heat, high temperatures, easy to disease spray insecticide. Summer dressing and watering, sperm tube bagging fruit is good.

Second, the phenological period in July is an important stage of fruit development and flower bud physiological differentiation at the same time, the spring shoots stop, the upper and middle roots of the second growth peak, the second generation of peach trees on the second generation of egg-laying damage, if encountering "drought drought" Red spiders are prone to outbreaks.

Third, the main business

1. The main task of protecting fruits after bagging is to protect the normal development and growth of the fruit in the bag.

specific methods:

1 Regularly unfasten the fruit bags in different orientations of the tree every 7-10 days, and find that the problems such as rotten fruit and sunburn are solved in time.

2 After the wind, rain, and spray, the whole park should check whether the fruit is taken out of the bag or the bag is stuck on the fruit surface, whether the vent hole is opened, etc., and timely make up the sleeve, drainage, and loose bag to prevent sunburn and black spots. Disease occurs. In the event of heavy rain or continuous rain, the two vent holes in the bag can be properly cut to facilitate drainage and air leakage to prevent the occurrence of diseases.

2, pruning continue to follow the "four thin four secret" principle (ie, the upper part of the tree, outside, large branches, branches to be thin; the lower part of the canopy, internal, branchlets, north branches to be relatively dense) to adjust the amount of air ventilation.

1 In time, the useless shoots of branches cut and kerf cuts sprouted.

2 Carefully clean up the long branches of the internal organs and the excess erecting branches on the back, the invalid branches at the lower part of the canopy, the staggered branches at the middle, and the branches at the outer dense crowding competition.

3 For 4-5 years old trees, note that the un-lignified part is removed by erecting, competition, and long branches to promote axillary shoots and short shoots, and cultivate fruiting branches.

4 Continue to take the stick.

5 For the second and third sub shoots germinated for the last time, keep 3-5 centimeters in order to facilitate flower bud formation.

3, top dressing for early and middle ripe fruit pot to apply potash fertilizer is good, late-maturing, late-maturing fruit phosphorus and potash fertilizer is better. For each 50 kg of fruit, 1 kg of potassium sulfate or 7-10 kg of ash is applied. Combining spray spraying, 0.3%-0.5% fine potassium dihydrogen phosphate, multi-element liquid fertilizer and growth regulator are sprayed once every 15 days.

4. Waterlogging droughts and droughts often occur in the north. When the drought is severe, the roots must be in a moist state, and the soil moisture is not less than 60% of the field water capacity. specific method.

1 Make sure to try watering. In the May-June period, it is important to try watering without watering due to drought. Even if you buy a watering tree tray, it is worthwhile.

2 spray grass gray water. Spray 1-3 times of vegetation gray water, that is, use 5-6 kg of grass ash to add 100 kg of water, stir and soak for about 15 hours. The filtered slag is the vegetation gray water.

3 spray drought agent.

5. Pest control The main prevention of pests of Prunus persicae, red-and-white spiders, cockroaches, gold-grained moths, early deciduous diseases, black spot disease, rotten fruit diseases, etc.

6, cultivating grass cultivating grass cover basically the same as last month. It is necessary to explain that when the height of grass is about 30 cm, the tree cover is cut and covered, and deep rooted weeds, long stem weeds, and vicious weeds are completely eradicated.

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