In July, the climate change was very active and was prone to natural disasters such as high temperatures, heavy rain, hailstorms, strong winds, and droughts. The pests and diseases of fruit trees are also very active. For example, the low-temperature and high-temperature drought may increase the hazards of spider mites. In addition, it is prone to cause diseases such as early deciduous diseases of fruit trees, ringworm, anthrax, and other diseases. In addition, in July, apples are prone to day burns. In response to these circumstances, fruit growers should focus on the following aspects to do a good job of orchard management.
Integrated control of pests and diseases
Spray 1:2:200 times more Bordeaux mixture in early July, and spray once or twice a day with 12% of farmer's resistance or 3% of polymyxin or 52.5% of carbendazim or 16% of isoformamide or 12.5. % Diniconazole or 25% myclobutanil or 25% propiconazole prevent apple ringworm disease, early defoliation, and anthrax.
When the average leafhopper exceeds 2 heads/leaf, mixed spray of 10% fenbutatin or 1.8% avermectin or 50% chlorpyrifos or 20% thiocyanide or Wanling can control red Spiders, and prevent peaches, leaf miners and other pests.
Tree cover grass
Tree cover and grass cover can reduce the soil temperature and increase soil fertility and water holding capacity. For an orchard that does not have a tree plate and grass cover, it is necessary to seize the time and carry out a comprehensive grass cover on the trees.
Weeding and weeding
The more weedy orchards should be cultivated and weeded to improve the ventilation conditions in the lower part of the canopy, reduce the orchard’s air humidity, and reduce the chances of disease occurrence (the greater the humidity in the orchard, the more likely the disease will occur).
Irrigation and drainage
When the temperature exceeds 35°C, the photosynthetic production capacity of the leaves will drop rapidly. At this time, if the water supply is insufficient, the trees and fruits are most prone to sunburn. In case of heavy rain in July, we must pay attention to drainage and flood prevention. If the water in the roots of the fruit trees takes too long, it will cause the root system to die due to breathing difficulties. This will not only affect the normal growth and absorption of fruit tree roots, but also cause root rot and tree weakness in severe cases. Even the whole plant died.
prune
In addition to taking branches and pulling branches in June, all branches in July can be picked up, pulled branches and removed. After taking a branch and pulling a branch, new shoots standing upright on the back shall be removed at any time.
Top sticks, hanging sticks
As a result, too many branches are often sagged due to fruit weight, 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 to infect a variety of pests and diseases, while poor illumination also affects flower bud differentiation. Quantity and differentiation quality. Therefore, from the beginning of this month to August, the fruit growers should support the drooping branches with wooden sticks or use ropes to distribute them evenly and reasonably. In order to prevent the occurrence of sunburn, support (hanging) should avoid the high temperature at noon.
Other auxiliary management
An orchard with high temperature, drought, and no irrigation conditions can spray 2 to 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 fruit to burn.
Gauze Balls,Cotton Gauze Balls,Absorbent Gauze Balls,Disposible Gauze Ball
Zhende Medical Co.,Ltd , https://www.zdmedicalproduct.com