In the hot summer weather, if you want to improve the yield and quality of vegetables, you must do the key steps well

Summer is the peak period for the growth of various vegetables. Due to the relatively high temperature and the increase in rainfall, the air humidity may also be relatively high in a short period of time.

This can easily create an environment of high temperature and high humidity. For vegetables, this environment is unfavorable to the growth of vegetables.

From the perspective of planting quantity, there are more vegetable varieties planted in summer. In the case of limited unit area, if you want to obtain higher yields, you must pay attention to some details in field management.

Especially for some plots that have not been left fallow, even if various measures such as crop rotation and weight rotation are adopted in summer, the actual yield will often gradually decrease.

Therefore, adopting refined field management and carrying out different management for different varieties is an important prerequisite for ensuring yield.

01 Characteristics of summer vegetable growth

For vegetables grown in season, they enter the peak growth period in summer, and both fruits and leafy vegetables grow faster. , so the demand for water and fertilizer is also relatively large.

Both the air temperature and the ground temperature are generally relatively high in summer, so during the growth of vegetables, water evaporation and transpiration proceed relatively quickly, especially in sunny and high-temperature climates where most vegetables often are prone to symptoms of dehydration.

In most cases, summer vegetables are grown in the open air, and the number of vegetables grown using greenhouses and other facility agriculture is generally relatively small.

For vegetables grown in greenhouses, the greenhouse temperature itself is higher than the air temperature, so special attention must be paid to the control of the temperature inside the greenhouse.

In terms of fertilizer supply, in order to promote the growth rate of vegetables and increase yields, the amount of fertilizer used is often increased. It should be noted that the timing and dosage also need to be controlled when fertilizing.

02 Pay attention to cooling when planting summer vegetables

One of the most important measures to increase the yield of summer vegetables is to pay attention to sun protection and cooling in high-temperature climates.

No matter what kind of vegetables they are, they have a certain range of adaptability to ambient temperature.

The maximum temperature that most vegetables currently grown in summer can adapt to cannot exceed 35 degrees.

If the temperature is too high, vegetables will enter a dormant state or die directly.

Especially for some fruits and vegetables that bloom and pollinate in summer, such as cucumbers, pumpkins, luffas, etc., the maximum temperature generally cannot exceed 30 degrees, so cooling them is the best way to improve fruit setting. rate and yield are the primary conditions.

The most common way to cool down is to use sunshade nets.

For large-scale planting, this method is the cheapest and most effective, and it is also easier to operate.

Most of the shading period is from around 10 am to around 3 pm. During the gradual increase in temperature, the time and intensity of light received by vegetables are reduced.

Thus achieving the purpose of reducing the temperature of the entire vegetable growth environment.

For those who use greenhouses and other facility agriculture for production, it is often necessary to reduce the temperature inside the shed by adding a sunshade film or enhancing ventilation and spraying.

For vegetables or crops grown with relatively high economic value, it is often necessary to use facilities such as air coolers to accurately control the temperature.

When conducting temperature control, whether it is open-air planting or greenhouse planting, a certain amount of light time must be ensured so that vegetables can photosynthesize and generate nutrients.

As far as possible, the vegetables can receive enough light for a long time when the light is relatively soft.

03 Use foliar fertilizers scientifically

According to the characteristics of summer temperatures, more people can choose to use foliar fertilizers when fertilizing vegetables, especially melons and fruits.

This is mainly because the amount of foliar fertilizer used is relatively small and the effect is faster.

For fruits and vegetables, applying some flowers and fruit-preserving drugs in combination with foliar fertilizers can better improve the pollination rate and fruit-setting rate.

Foliar fertilizer can also have a cooling effect during water spraying.

In the actual production process, the most commonly used foliar fertilizers are potassium dihydrogen phosphate and boron fertilizer. Some fruits and vegetables also need to be sprayed with water-soluble calcium or superphosphate to supplement calcium. Fat.

When applying foliar fertilizer, generally try to do it on a sunny morning after the dew on the leaves has completely dried.

The key usage period is mainly before and after the flowering period.

Under normal circumstances, it is mainly used once every other week, and the frequency may be increased as appropriate according to the flowering and pollination conditions.

04 Assisted artificial pollination

The most important impact of summer high temperature weather on vegetables, besides growth rate, is pollination rate.

Especially for outdoor planting due to the uncontrollability of ambient temperature.

There is also uncertainty in the pollination rate. To obtain high yields, increasing the pollination rate is a must. Therefore, assisted artificial pollination is also something that needs to be paid attention to in the cultivation of summer vegetables, especially melons and fruits. A key link.

At present, in the process of artificial pollination of vegetables, especially fruits and vegetables, there are two methods: spraying flowers or spotting flowers.

For large-scale planting, especially large-scale planting of fruits and vegetables, since the flowering period is relatively concentrated, in order to improve the efficiency of artificial assisted pollination, chemical spraying is often used.

For small areas of planting, it is more economical to use manual flower spotting.

From an effect point of view, the efficiency of assisted pollination using flower spraying is very fast but may be uneven.

The effect of manual dotting is more obvious, but the time cost is relatively high.

Some growers use flower spraying and then use manual flower spotting to check for leaks and fill gaps, which can further improve the pollination effect.

When performing artificial pollination, some related drugs are often used, which requires attention to determine the dilution concentration of the drugs according to different climate temperatures.

Especially in summer when the temperature is relatively high, it is easy to cause phytotoxicity if the concentration is too high.

At the same time, when performing artificial pollination, it is best to follow a certain order to avoid duplication or omission.

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