What should I do if the fruit trees in the orchard are damaged?

For damaged foliar tissues, spraying control at the same time increases soil moisture and improves the water balance in plants. Because the main cause of drug harm is too high concentration or chemical reaction with other drugs to form harmful substances; Or there are serious problems in the quality of the selected pesticides and many other factors, which will produce unnecessary pesticide damage after application, which will affect the growth and development of fruit trees, branches and leaves, flowers and fruits, and ultimately reduce the quality and yield of fruits. Your saplings are too short, coupled with high soil moisture and high temperature, after the application of acetochlor, the agent will be absorbed by the leaves of the sapling with the evaporation of water, resulting in curling, shrinking and drying of the leaves and young shoots, although it will not cause the death of the sapling, but the growth and development will be harmed.

The following methods can be used to remedy this.

<> if the pesticide damage is on the tree, please spray water about 3 times as soon as possible to dilute the pesticide remaining on the tree and not absorbed. If the pesticide damage is mainly concentrated in the soil part, water it once as soon as possible, and the effect is to wash away the liquid medicine on the soil surface, that is to say, the "horse water" will be discharged immediately after watering. The residual period of acetochlor in the soil is about 45 days, generally with acetochlor to mix enough water, one to have a good effect, two to dilute the damage, at present, there is no special antidote to acetochlor damage, insecticides and fungicides are mixed to produce chemical reactions and harm caused by excessive concentration, generally better to deal with, with brassinin + amino-oligosaccharides + aminoacyl ester for foliar spraying.

Spraying twice in a row, and then filling the roots with water, can alleviate the damage.

If possible, it is recommended to use the antioxidant products of Stolle in the United States, 300 times each of Anti-Dolle and Naipu 9, or use 200 times spray of the repair agent of Youma in the United States, and it will be back to normal in about five days! In general, the characteristics of harmful substances are low molecular, easy to penetrate, and have substances that are harmful to plant growth hormones, etc., causing damage to fruit trees. For foliar stomata or tissue damage caused by reaction exothermia caused by the mixing of multiple drugs, more attention should be paid to the control methods.

Watering. This phenomenon occurs because pesticides are sprayed too much, and the ingredients of the drug should be diluted.

Suspend similar drugs as much as possible before the drug harm is completely removedReduce the use of pesticidesIn particular, the use of similar pesticides should be stopped so as not to aggravate the damage. Due to the high summer temperatures, fruit trees are prone to diseases and plagues, only need to spray the fruit trees multiple times, comparatively, apple trees need to be sprayed with pesticides three times before bagging, and there are few pesticides after bagging, especially after spraying Bordeaux liquid for a long time. Pay attention to the mix of fertilizers and medicines.

This is something to be noted throughout the year. When foliar fertilizers, fungicides and insecticides are mixed, attention should be paid to the interaction between them to avoid reactions and reduce the efficacy.

Most pesticides are not suitable for high-temperature spraying, because when pesticides are sprayed on fruit trees at the highest temperature, various diseases and plagues are easy to decompose and flood in the summer of high temperature and high humidity, fruit producers should pay attention to personal safety, spray in summer, and avoid heat stroke and poisoning; We must also pay attention to the sensitivity of the branches and leaves and fruits of fruit trees to pesticides, and only a more comprehensive consideration can reduce many unnecessary problems.

In the event of drug poisoning or damage to the fruit tree, the growth of new shoots can be slowed or stagnant. In severe cases, it will lead to the black death of heart leaf sprouts, spots, tricks, yellow spots, punching, punching, curling, falling leaves, falling fruits, and falling branches, which will not only reduce the photosynthesis of fruit trees, but you will also reduce or delay the flowering and colonization of fruits.

Misleading farmers into spraying pesticides has caused a lot of problems, which not only increases the investment costs of fruit farmers, but also everyone knows that the summer temperatures are relatively high and the climate is relatively humid. This is the time when fruit tree pests and diseases are rampant. In order to stabilize the yield, fruit producers will definitely spray pesticides on the fruit trees to prevent and ** diseases.

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The main cause of pesticide damage is caused by the incorrect way of applying chemical agents, especially some stone fruit trees are very sensitive to many pesticides and react violently, thus causing pesticide damage.

In production management, often due to many factors such as improper selection of pesticides, too high concentrations, wrong mixing of pesticides, or serious problems in the quality of selected pesticides, unnecessary pesticide damage will occur after application, thereby affecting the growth and development of fruit trees, branches and leaves, flowers and fruits, and ultimately reducing the quality and yield of fruits.

The symptoms of leaf and fruit damage are the most obvious, no germination or too late in early spring, the leaf hairs on the back of the leaves are brown or even dead, the tips and edges of the leaves are seriously scorched, sometimes the whole leaves and inflorescences turn brown and wither, some leaves appear many dead patches, and some leaves shrank and deform, thicken, harden and become brittle.

One of the biggest headaches for fruit farmers is the fundamental progression, there are many causes of the root system of fruit trees, and the cause must be found, targeted measures must be taken, effective ** or prevented. There's a good way to control, let's see!

The cause of root pathogenesis has become the destruction of fruit trees such as apples, pears, peaches and grapes in recent years.

So what are the causes of physiological root disease? 1) Fertilization is not scientifically sound. Some fruit farmers blindly fertilize nutrients, which leads to the addition of * soil bonds, poor root roots, and a sharp decline in disease resistance.

Overdose is very likely to cause root root ammonium bicarbonate roots and malporous and rusty farm manure (human manure, straw, etc.), which also exacerbates rooting diseases.

Chicken manure that has not been decomposed contains pathogens and pests such as E. coli, nematodes and direct administration to pests can lead to pest transmission and affect the health of fruit trees.

After the unconditioned farm manure was applied to the fruit orchard, it encountered suitable conditions for fermentation. In this process, not only the bacteria are propagated, but the heat generated by fermentation will also burn the roots of the plant, resulting in rotten roots, black roots, yellow leaves, premature aging, yellowing diseases, etc., leading to the death of the plant, and continuous harmful gases such as methane, ammonia, etc., will cause acid damage and root damage to the fruit tree, resulting in root growth, resulting in burning roots.

In addition, when the manure is fermented continuously, the organic matter breaks down the oxygen in the pores, leaving the soil in a temporary state of hypoxia and inhibiting root growth. In conclusion, it is especially important to change fertilization gradually.

2) Spring is the peak period. Orchard spring is another important cause of physiological root diseases, especially peaches, apricots, plums and vineyard performance is more prominent. The absorbent roots of fruit trees are mainly distributed in the surface soil within 30 cm, which is very sensitive to environmental changes, and surface soil changes, drought, stains will lead to the absorption of roots.

After the blurring, the permeability of the surface soil changes greatly, the permeability of the surface soil, temperature, water content, etc., which leads to the death of the absorption roots in the soil, resulting in the post-season sexual loss of fruit trees, until new absorption until new absorption grows. Therefore, some fruit trees will have a phenomenon in yellow leaves, falling fruits. The mobilization of large amounts of water for soil erosion has a strong effect, so that the air in the soil is squeezed out, the soil is in a state of hypoxia, and some roots and soil microorganisms will die due to the lack of oxygen, and the soil structure will also be destroyed.

Especially in spring, the orchard is slowly tempering due to the greater water, which directly affects root growth and soil microbial activity, delays tree flowering time, and then delays the ripening of fruits, especially the greater maturity of the medium. The pathogenesis of many diseases such as decaying diseases spreads with water. After the orchard is ambiguous, the pathogen spreads with water, and the conditions will properly infect the healthy fruit trees, causing disease.

The first thing to do is to address the root infections of fruit trees. The diseased fruit trees should first expose the diseased taproot and brush it with fungicides. It should be noted that the use of pesticides of the "azole" class is not recommended when sterilizing the roots of fruit trees.

Because this type of pesticide has a certain inhibitory effect on crop growth. After the root sterilization treatment of fruit trees, it is necessary to adjust the growth potential of weakened fruit trees to promote their development. Growth regulators that have a comprehensive effect on the growth of fruit trees, such as "Bihu", can also be used for root irrigation, and chitin preparations that have obvious growth-promoting effects on crop roots can also be used for root irrigation.

You can also mix the two.

The main causes of disease in the roots of fruit trees are: due to unsuitable soil environment, such as soil water accumulation and high groundwater level. The root system is infested by harmful organisms, such as certain pathogenic fungi and bacteria.

Among the two causes, waterlogging was the main cause of root disease. Root diseases should be prevented, and prevention is more important than cure. In order to avoid and alleviate root diseases of fruit trees, the following control measures should be taken:

When the leaves on the tree lose water and are green and dry, the leaf tips and leaves are slowly scorched, the leaves turn yellow, and the branches die, the following work should be done immediately: irrigating the roots with pesticides. In order to prevent the rest of the roots on the diseased plant from being infected, 4-6 radial furrows with a depth of 60 cm and a width of 30-40 cm should be dug with the tree body as the center, and the radial furrows that are long to the periphery of the canopy should be dug with 4-6 radial furrows, and 300 times of 50% antibacterial special wettable powder, or 800 times of 70% methyl tobuzine wettable powder, or 200 times of copper sulfate solution.

1. Use water scientifically, pay attention to improving the drainage and irrigation facilities of the orchard, and try not to flood or string irrigation; Orchards with conditions should adopt drip irrigation or infiltration irrigation, pay attention to dry irrigation and waterlogging drainage, and reduce the occurrence of diseases. 2. Reasonable plastic pruning, create good orchard ventilation and light transmission conditions, strengthen the root system, improve the photosynthetic effect of the tree, cultivate a strong tree, enhance the disease resistance of the tree, and prevent the occurrence of diseases. 3. Advocate the use of grass between the orchard rows to achieve the purpose of fertilizing the soil, loosening the soil, and storing water and moisture.