Entering summer, this time is the period when the pear tree's nutrient growth requirements and reproductive growth are the fastest in a year, and it is also the period when the pear tree is affected by external conditions. During this period, pear trees have high requirements for fertilizer and water conditions, and are vulnerable to pests and diseases. The level of management will have a significant impact on the yield of pear trees and the quality of fruit.

Soil, Fertilizer and Water Management

Fertilizer and water management From late May to early June, before the flower buds differentiate, according to the age of the tree and the number of fruits, the plant shall be given a fertilizer mainly composed of phosphorus and potassium.

Soil management In summer, the temperature is high, the soil moisture is high, and weeds are prone to grow. Usually after heavy rain or irrigation, the soil is loosened and weeded in time. Conditional orchards can be covered with grass. After the wheat harvest, use wheat straw to cover the inter-row or inner-row trays of the fruit trees. Each acre of grass covering 1000 kg ~ 1500 kg, the thickness of the covering is 20 cm. After mulching the grass, sporadically compress soil on the grass to prevent fires.

Pest Control

In the young fruit stage, it mainly controls rust disease, scab, ring stalk, pear psyllid, pear aphid, pear stink bug, and pear worm.

Control measures: â‘  Manually remove the diseased and diseased tips and bury them deeply; â‘¡ Spray 80% mancozeb 800 times solution and 30% carbendazim 500 times solution to prevent rust and other diseases. When the pest is severe, 10% imidacloprid can be mixed. Note that Bordeaux mixture should not be used after the fruit is set for 40 days to prevent fruit rust from occurring.

During the period of fruit expansion and maturity, it mainly controls scab, ring disease, rust disease, heartworm, boat-shaped caterpillar, and rust tick. For disease control, 200 times of Bordeaux mixture can be sprayed; for pest control, 2000 to 3000 times of 10% Kungfu can be sprayed.

Summer pruning

The purpose of summer shears is to control the excessive growth of the tree, promote flowering and improve the ventilation and light transmission conditions of the tree. For normal fruiting trees, strictly control the dense branches and prosperous shoots on the back and periphery of the backbone branches. Comprehensive application of topping, breaking, thinning, pulling branches and other methods to adjust the branch potential and angle of the backbone branches. In order to promote the formation of flower buds in the following year, the main lateral branches or rearing branches of the saplings can be circumscribed in mid-to-late May.

Fruit bagging

The bagging period is 25 to 50 days after falling flowers, and the bagging work should generally be finished before early June.

Before bagging, in order to prevent pests from invading the fruit after bagging, insecticide and disease prevention agents should be sprayed 5-7 days before bagging.

After the bagging method is selected, open the mouth of the bag first, hold up the bottom of the bag, and open the air outlets at the two bottom corners to make the bag swell. Hold the bag 2 cm to 3 cm below the mouth, cover the fruit, and the fruit hangs in the bag.

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