Climate change is very active in July, and it is prone to natural disasters such as high temperatures, heavy rain, hail, wind and drought. The pests and diseases of fruit trees are also very active. For example, the damage of red spiders may increase due to the lack of rain and high temperature and drought. The rainy and hot weather may cause the early diseases of fruit trees, such as defoliation, ring disease and anthracnose. In addition, in July, Apple is also prone to daily burning. In response to these situations, fruit farmers should focus on the following aspects to do a good job in orchard management.

Integrated pest control

Spray 1:2:200 times Bordeaux mixture in the first half of July, spray 10% agricultural antibiotic or 3% polymycin or 52.5% carbendazim or 16% imidamide or 12.5 after 12 to 16 days. % diniconazole or 25% myclobutanil or 25% propiconazole, etc., to control apple ring rot, early defoliation, anthracnose.

When the average leafhopper is more than 2 heads/leaf, it can prevent red by mixing 10% phenbutyltin or 1.8% avermectin or 50% chlorpyrifos chlorocyanate or 20% butyl thiocarbamate emulsifiable concentrate or Wanling. Spiders, and prevent pests such as peaches and leaf miners.

Tree tray grass

Tree shroud can reduce soil temperature and increase soil fertility and water retention capacity. If there is no orchard covering the orchard, it is necessary to hurry up and carry out a comprehensive covering of the trees.

Cultivating weeding

Orchards with more weeds should be cultivated and weeded to improve the ventilation conditions in the lower part of the canopy, reduce the air humidity in the orchard, and reduce the chance of disease occurrence (the greater the humidity of the orchard, the more likely the disease occurs).

Irrigation and drainage

Watering should be carried out at high temperatures and droughts. When the temperature exceeds 35 °C, the photosynthetic manufacturing capacity of the leaves will decrease rapidly. At this time, if the water supply is insufficient, the trees and fruits are most prone to daily burning. In case of heavy rain in July, attention should be paid to drainage and flood control. If the water accumulated in the roots of the fruit trees is too long, it will cause the roots to die due to difficulty in breathing. It will not only affect the normal growth and absorption of the roots of the fruit trees, but also cause root decay and tree weakness in severe cases. Even the whole plant died.

prune

In addition to picking branches and pulling branches in June, the branches, branches and buds can be carried out throughout the month in July. After taking the branches and pulling the branches, the new erect new shoots on the back of the branches should be erased at any time.

Top branch, hanging branch

As a result, excessive branches often sag due to the weight of the fruit, and are pressed to the ground or overlap with the branches below, resulting in deterioration of local light conditions, resulting in poor coloration of the fruit and easy infection of various pests and diseases, and poor illumination also affects flower bud differentiation. Quantity and quality of differentiation. Therefore, from the beginning of this month to August, fruit farmers should support the drooping branches with wooden sticks or ropes to make them evenly and reasonably distributed. In order to prevent the occurrence of daily burning, the high temperature time at noon should be avoided when supporting (hanging) branches.

Other auxiliary management

Orchards with high temperature, drought and no irrigation conditions can spray 2~3 times of fulvic acid, humic acid and potassium dihydrogen phosphate solution to enhance the drought resistance of fruit trees and reduce the incidence of sunburn.

Check fruit bag

Pay attention to the bag after the rain and open the ventilation drain hole to prevent the fruit bag from sticking to the fruit and causing the fruit to burn.

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