Is it difficult to grow vegetables in summer? Farmers have mastered the technology, emerged more seedlings and grew well.

Growing vegetables in summer is also a difficult thing for many farmers who have many years of planting experience.

Because summer corresponds to daytime, the sunshine time will be prolonged, resulting in slow germination of vegetables.

Even after the vegetables grow seedlings, the leaves will turn yellow and wither.

Long-term sunshine exposure in summer will also make the surface temperature rise rapidly.

Normal application of water and fertilizer in this period will be more conducive to the occurrence and spread of pests and diseases, and will also pose a certain threat to the growth of vegetables.

The continuous high temperature weather has caused the temperature in many places to reach 40 degrees.

Such hot weather will not only increase the difficulty of seed germination.

In the later planting management, it will also test the planting technology and management level of growers.

It is necessary to master the skills of growing vegetables in hot season so as to adjust the management plan in time according to the changes of the environment.

It's easy to grow vegetables in summer, and the vegetables bolt prematurely.

In the process of vegetable growth, some problems will become more difficult to deal with.

First, the skills of growing vegetables and raising seedlings in summer

It cannot be ignored that in the community, before sowing, seeds should be dressed with chemicals.

Its purpose is also to reduce the workload in the later period and reduce the probability of vegetable infection in the growth process.

Before sowing, we should not only plough the vegetable fields and apply mixed base fertilizer, but also keep a certain amount of water in the soil.

In this way, after the soil has a certain humidity, it is more helpful to shorten the germination period.

In summer, we can raise seedlings and sow seeds by ridging in a small area.

Because in a small range, the land has strong water retention capacity.

The water vapor in the soil will not evaporate too quickly, which can reduce the watering times after planting.

The specific method is to wet the whole seedling area with a sprinkler, and do not leave water in the seedling area.

Let the water gather on the ridge. When the water retention capacity of soil is poor, ditches can be dug between two rows of ditches to collect the poured water.

The frequency of watering depends on the planting type, temperature and rainfall of vegetables.

If the high temperature is not suitable for a long time, water it on the ridge.

Mainly because in high temperature weather, water is poured on the ridge, and a large amount of water transpiration will have a certain adverse effect on seed germination and emergence.

After sowing seeds, we should master the height of covering soil according to the thickness and size of seeds.

Because the temperature will rise rapidly in summer, it is not suitable to build too thick soil in hot season.

Second, the management scheme of flexible adjustment in high temperature weather

When planting vegetables in summer, we should do a good job in sun protection management.

You can cover the vegetable seedlings with black shading cloth and gauze with low light transmittance.

After the vegetable seedlings in the field grow neatly, remove the net and black cloth that block the strong light.

While shielding the seedlings in the vegetable field from strong light, we should also leave a certain space in the shed to facilitate ventilation.

Using the integrated management technology of water and fertilizer scientifically and flexibly can save manpower management expenditure, reduce labor intensity and save more water and fertilizer resources.

In the high temperature environment, the water transpiration rate of planting plots is too fast, and the evaporation is also large. It is necessary to scientifically and flexibly adopt drip irrigation and sprinkler irrigation techniques, dissolve fertilizers in water and spray them on vegetables.

It is best to avoid watering and fertilizing in high temperature period, because watering and fertilizing in high temperature period is easy to cause fertilizer damage and heat damage.

When the transplanted vegetable seedlings can adapt to the growth of the new environment, it is necessary to reduce watering the vegetables in the field at this time.

During the high temperature, the leaves will wither temporarily.

Don't water it immediately at this time, but water it before the sun comes out the next day, which will make the roots of vegetables stronger and deeper.

It is best to plough the soil after watering, and if necessary, water the roots of vegetable seedlings with seaweed.

Advanced sprinkler irrigation and drip irrigation technology can also adjust the water temperature according to the temperature of the planting environment.

The damage of environmental temperature and water temperature to vegetables is greatly reduced.

When adding water and topdressing to vegetables, it is necessary to open the vent to adjust and reduce the temperature in the shed.

This can make vegetable crops grow steadily and carefree.

For leafy vegetables, there is no need to prune branches and leaves, but if eggplant and melon vegetables are planted, some leaves should be combed around the fruit, and a proper amount of leaves should be left to prevent the fruit from being burned by the sun.

The remaining branches and leaves can be sheltered, and the high temperature reflection of the plot makes the soil absorb less heat, thus reducing the ground temperature.

It is also beneficial to increase the temperature difference between day and night.

In the dry and hot season, vegetable aphids, leaf miners and other large-eating pests often appear in vegetable fields.

At present, pest control technology is advanced, and pests are killed by chemical control and physical control.

Achieve the effect of killing two birds with one stone, which can greatly reduce the invasion of pests.

In this period of activity, it is best to use environmentally friendly methods to control insect larvae.

Even if pests are rampant in the field, don't choose this highly toxic and residual chemical to spray.

The time for spraying chemicals should be at noon, when the temperature is relatively low.

The temperature is already very high in summer, if you choose to spray pesticides at the hottest time of the day.

Then the vegetables in the garden will have a large area of phytotoxicity.

People who operate in the wild will also be easily polluted by chemicals, resulting in uncomfortable poisoning reactions.

The environmental weather is changeable in summer, so it is necessary to do a good job in the management of agricultural products in the field in time.

If all kinds of agricultural products are not stored well, in the rainy weather, all kinds of agricultural products in vegetable fields will deteriorate because of the too humid weather.