Introduction of key techniques for prevention and control of diseases and insect pests of fruit trees in summer

Due to the hot weather in summer, fruit tree diseases and insect pests are very easy to occur if they are not managed properly. Once fruit trees are affected by diseases and insect pests, there is great damage to yield and quality, which makes growers miserable. Let's take a look at the key points of pest control techniques for fruit trees in summer.

I. Common diseases and insect pests of fruit trees in summer

The main diseases and insect pests in summer orchards are peach heart borer, Hawthorn spider mite, early deciduous disease, rot and anthracnose.

2. Technical points of disease and pest control of fruit trees in summer

1. Strengthen cultivation and management.

In the process of fruit tree control, strengthening cultivation management is one of the very basic measures. Good cultivation management can improve the resistance of fruit trees to diseases and pests and effectively control the spread of diseases and insect pests. In addition, scientific drainage and fertilization should be carried out in the management to improve the tree potential of the orchard. Fruit tree growers should also do a good job of hygiene in the garden, regularly cut off the branches and tips of diseases and insect pests, and remove the fruits infected by diseases and insect pests in time, so as to reduce the infection rate of diseases and insect pests, and carry out pest control in the seasons of weak resistance, easy exposure and gregarious insects, which can achieve good control results.

2. Improve the spraying quality.

First of all, the choice of pesticides, we must choose high-efficiency, low-toxicity, low-residue pesticides. Do not choose those pesticides with low efficiency and high toxicity. Summer is the most sensitive season for fruit tree growth to pesticides. How to choose the correct spraying time should be before 10:00 or after 4 p.m. At other times, if the sun is too big, spraying will cause burning fruit to the fruit trees, not to mention, it will also do some harm to the human body. at the same time, because the branches and leaves of fruit trees are luxuriant and various pests have strong concealment, they must be sprayed in place when spraying early, and the fog point should not be too large, so that both the positive and negative sides of fruits and leaves should be fully sprayed, and according to the living habits of various pests, focus on spraying and controlling their concentrated habitat. To ensure that the good impact is eliminated at one time, in addition, the type and concentration of drugs should be reasonably determined according to the sensitivity of fruit trees to various pesticides, and do not apply the wrong potion, which not only has no effect, but also affects the defense time of fruit trees. finally, it creates an irreparable situation, such as Bordeaux liquid is often used in apples, pears and grapevines, but peach trees are more sensitive to it and generally cannot be used.

3. Adopt the method of joint prevention and control.

Although most fruit growers operate independently and manage limited orchards, if you encounter continuous orchards, you need to communicate in advance and take the way of spraying drugs at the same time to carry out joint prevention and treatment, so as to prevent diseases and pests from invading other orchards. In addition, for different varieties of fruit trees, the types of pesticides selected by each fruit grower should also be targeted, and in the process of joint prevention and management, try to solve the problems of re-infection and re-spread of diseases and insect pests. In the stage of joint prevention and treatment, fruit growers also need to check the weather conditions in advance to prevent the pesticides that have just been sprayed from being washed by Rain Water and reduce the effect of pesticides on the control of diseases and insect pests.

4. Control measures of general diseases and insect pests

The general prevention and control of diseases and insect pests is mainly the use of cultivation measures to promote trees to become stronger, which can effectively improve the resistance of trees to diseases and insect pests. At the same time, it is also necessary to properly spray protection to improve the defense ability of tree pathogens. For the trunk with diseases and insect pests, the trunk should be removed manually according to the degree of disease, the scope of disease and the organ distribution of disease. Picking, digging, scraping, watering and spraying are generally used to eliminate diseases and insect pests.