In the hot and rainy summer, how can vegetables prevent leaf rolling, dead trees and various pests a

Be sure to pay attention to drainage, pay attention to the use of fertilizers, spray pesticides on time, and solve problems.

In hot weather, it is necessary to protect the leaves, promote the growth of roots, ensure the growth of branches, improve the stress resistance of fruits and vegetables, apply water-soluble fertilizers rich in organic matter, pay attention to sun protection, and prevent and control pests and diseases.

Be sure to water frequently, be sure to fertilize, be sure to spray pesticides regularly, be sure to do a good job of field management, and be sure to remove weeds regularly.

Entering the summer of high temperature and rain, vegetables appear yellow leaves, long spots, leaf curling, physiological leaf curling is mainly caused by dry and wet soil, high temperature, improper fertilization, excessive watering, fertilizer damage, root stunted development, etc.

Be sure to water often, be sure to fertilize, be sure to prevent pests and diseases, be sure to spray pesticides, and remove weeds regularly.

It is necessary to drain the water in a timely manner, and spray some pesticides appropriately to prevent and control pests and diseases.

Entering the autumn and winter greenhouse vegetables is also the planting management period, for the confined space, once the occurrence of improper pest control, easy to cause chain reaction, plus the drug problem in recent years, many pests and diseases have resistance, but also lead to poor drug effect, how do we solve this situation?

I believe that many friends have heard others say that for the problem of pest and disease resistance, different drugs must be rotated, which can reduce the problem of pest and disease resistance, but for growers or operators, it is too troublesome to change the medicine, and sometimes the effect is not very good, because other people have used it, which will also lead to resistance.

This also leads to the prevention and control, began to compound a variety of drugs, not only led to an increase in cost, pesticide residues also began to appear, for this situation, Kaijin teacher suggested that the following two solutions can be taken:

1. The use of biological control, such as the use of microbial fertilizer, biological bacteria selenium-rich fertilizer and other biological agents for prevention and control, can only play a preventive role.

2. Add organofluorine additives that can solve the resistance of pests and diseases, which can solve the problem of resistance to pests and diseases, which is equivalent to using a drug to prevent and control, and will also reduce our drug costs.

You can use pesticides to remedy, or watering, or weeds, or control the temperature, but also pay attention to the dosage of pesticides.

In such a situation, it is necessary to do a good job of ventilation and drainage, and then it is also necessary to water in time, and the temperature of planting should not exceed 25 degrees, and then it is also necessary to spray pesticides in time, and it is necessary to prescribe the right medicine.

The folk proverb says that "dry hoeing field, waterlogging garden", in which "waterlogging garden" refers to the removal of vegetable furrow precipitation immediately after the rain, and irrigation with river water and small water, so as to reduce ground temperature, improve soil permeability and oxygen content, so that vegetables can maintain normal inhalation, so that vegetables can grow and develop normally.

Hoeing and draining soil water content as soon as possible, improve soil air permeability, and avoid root soaking and vegetable blight diseases due to large soil water content. Integrate the soil turning and topdressing microbial agents to achieve the reasonable killing and transmission of harmful pathogenic bacteria on the surface of the soil layer.

Immediately after the rainstorm, the plants that blow crooked or fall seedlings will be straightened to reduce the corruption and disease caused by the pressure between each other, and the spraying agent can be combined to increase the water flow while cleaning and disinfecting the agent.

Water storage and high humidity will lead to the weakening of the rhizome theme activities of melons and vegetables, and the root absorption effect is weak, so it should be sprayed or irrigated immediately to promote plant growth and development, improve rhizome vitality, and promote the downward rooting of capillary roots. The use of fruit can reduce symptoms such as heart rot, umbilical rot, and browning and atrophy of bud eyes.

For the recently transplanted summer and autumn stubble nightshade vegetables, it is necessary to carry out pesticide spraying after the rain and close the road surface to avoid the spread of pathogenic bacteria and fashion. Fusion spraying can fill medium and trace element fertilizer, improve the flowering promotion of plants, improve heat resistance, and improve fruit setting rate.

After precipitation, there will be more wounds on the branches of Chaotian pepper, which is easy to cause diseases, so it is necessary to take medicine as soon as possible to prevent high incidence of horn spot, brown spot, epidemic and other diseases.

While preventing and controlling the diseases of true pathogens in the vegetables in the Bashang area, it is necessary to pay attention to the appropriate improvement of heat insulation and thermal insulation measures. The temperature difference between day and night in the vegetable greenhouse in the Bashang area is large, and the air outlet should be turned off at night to insulate and keep warm, so that the eggplant vegetables can grow and develop rapidly, and there are fewer deformed fruits caused by the large temperature difference. Spray anti-bacterial infections immediately after rain to reduce the threat of downy mildew.

1. The invasion of heavy rain can also cause vegetable plants to fall to the side, or the stems and leaves are directly broken. At the same time, after heavy rain, the air retained in the soil will be significantly reduced, and the root system of vegetables will be forced to switch to anaerobic respiration to sustain life, which will lead to cell death due to poisoning over time.

2. Remove stagnant water. For some vegetable fields that have been flooded, first of all, it is necessary to open ditches and clear ditches in time, remove all the remaining water in the field as soon as possible, and appropriately raise the furrow surface to reduce the water level of the vegetable field, so as to correctly promote the normal growth and development of the root system of the plant.

3. Cover the shade net. In the case of a sudden sunny day after rain, it is necessary to cover it with a shade net or spread an appropriate amount of grass on the furrow surface in time, which can usually realize the active water absorption function of the root system to be restored as soon as possible, and successfully avoid the situation that the plant loses water and wilts.

The technical measures that can be taken include ditch drainage, repair facilities, strengthen management, prevent soil compaction, apply a small amount of fertilizer, spray foliar fertilizer, and do a good job in pest control.

First of all, we must drain the water in time, loosen the soil in time, and dig some drainage ditches. Then it is necessary to repair the facilities and strengthen management.

Prevention and control through an integrated approachFor many people, vegetables are a very simple plant, and they come into contact with them every day in their daily lives. However, they don't understand that if they want vegetables to grow well, it is also a difficult means, because vegetables will also experience the threat of various diseases in the process of growth, so the people who cultivate them must always pay attention to the occurrence of such a situation. Every vegetable grower is very concerned about the situation of vegetables, once they find that there may be some diseases, they will be very nervous, and through some more comprehensive means to control such diseases.

For vegetable diseases, the best way to prevent and control them is to use pesticides, which can well ensure the growth of vegetables.

If the weather is too hot or rains too much, it will affect the growth of vegetables. In such a situation, they will solve such a problem through some physical methods and comprehensive means.

When planting vegetables, you should spray some pesticides to prevent pests and diseases, or spray some vinegar, so that you can control them.