At the end of June, apples began to enter the flower bud differentiation period, while the autumn shoots began to grow, and the fruit grew faster. Due to the high temperature and ground temperature, the second growth of the root system gradually weakened or even stopped. So we put the focus of management on the tree.
Since the end of June, it has also entered the hottest month of the year. The pests and diseases of fruit trees are also very active. For example, low rain, high temperature and drought, the damage of pests such as red spiders and aphids will increase. Rainy and hot, it is easy to cause black stars. The prevalence of diseases such as diseases, brown spot, ring disease, anthracnose and a large number of P. sinensis.
Management objectives for this period
1. Weeding and weeding, drought and flood control, creating good soil conditions for root growth. In this period, attention should be paid to controlling the application of nitrogen fertilizer to prevent the tree from growing and reducing the nitrogen content in the fruit.
2. Strengthen the monitoring and comprehensive prevention and control of pests and diseases, and prevent the outbreaks of pests such as red spiders, mites, and heartworms, and the occurrence of various diseases.
3. Continue to pruning in summer to control the growth of autumn shoots and promote fruit enlargement and flower bud formation.
4, drought resistance, flood control, root chasing phosphorus, potassium fertilizer, to ensure the normal growth of fruit trees and fruits.
Integrated pest control
Spray 4% agricultural anti-120 water agent, 600-800 times liquid or 12% green milk copper 600 times liquid to prevent early fruit deciduous disease and rotten fruit disease of fruit trees, remove the diseased fruit and bury it deeply; spray on the leaf stalk according to the report. For the use of medicinal herbs, moths, cockroaches, cockroaches, cockroaches, etc.; according to the rain, pay attention to the control of the heartworm to harm young fruit, the use of drugs have chlorpyrifos, moth lingering, peach xiaoling and so on.
When the soil temperature is higher than 30 °C, the root system stops growing. Root-covered grass can reduce soil temperature and increase soil fertility and water retention capacity. If there is no orchard covering the orchard, the opportunity of rich grass source should be grasped after the wheat harvest, and the tree tray should be fully covered.
When covering the grass, the tree plate should be finished first, then the grass should be covered. The thickness should be no less than 15 cm. After the cover, gently compact it and press it with a little land to prevent the wind from blowing, but not a layer of soil. It can also be used to cover the entire garden.
Trim 1 take the branch, pull the branch and remove the sprout. Take and pull branches at the end of June and early July can be carried out all month. If you take or pull the branches, the upright new shoots growing on the backs of the branches should be cut off or topped out at any time.
2 short cuts. In addition to the extension of the backbone to the end of July, the new shoots that have not been capped and stopped on the tree can be cut in the middle (the middle of the spring shoots), the caps are cut (cut at the junction of the spring and autumn shoots) or lightly cut (in the middle of the autumn shoots) Cut off), can stimulate the formation of autumn shoots and autumn shoots, and cultivate good results. This work can be carried out until mid-August, and this measure is better for the Fuji series.
3 carved buds. In early July, the stalks of the stalks of the saplings of the saplings were budded (or sifted with stalks and stalks) to prevent them from becoming bald in the future, and to promote the early development of short branches and increase the amount of short branches. Painted on both sides of the middle and lower parts of the branches and under the buds.
4 top branches, hanging. As a result, too many branches tend to sag due to the weight of the fruit, and they are pressed to the ground or overlap with the branches below, which may cause local light conditions to deteriorate, resulting in unreasonable distribution of tree-shaped structures and branches of fruit trees, and poor illumination also affects flower bud differentiation. The quantity and quality of differentiation. Therefore, from the end of June to August, the drooping branches should be supported by wooden sticks or ropes to make the distribution even and reasonable. During operation, care should be taken not to use apple tree pruning as a stick to avoid infection and operation. Care should be taken during the process to prevent the fruit from falling. In addition, in order to prevent the occurrence of daily burning, the high temperature of noon should be avoided when supporting (hanging) branches.
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