In the summer, these cooling measures are very useful

In June, the growing season of the summer vegetables was in the high temperature season. At noon, the temperature in the shed exceeded 40°C. For this kind of vegetable, high temperature and strong light are the two major factors that restrict the growth of vegetables. Only when the shade and cooling work is done well can it mean that the planting is successful. Remind vegetable farmers to adopt comprehensive measures to reduce the number of vegetables in the summer.

Cover the shade net cooling

The shading net has a good shading and cooling effect. When the temperature in the shading is above 35°C for a long time, a shading net should be set. In general, the shade net should be sunny cover, cloudy exposing; noon cover, sooner or later, exposing; pre-cover, late exposing. If it is rainy weather, the temperature is not too high, you can not cover it all day, but it must cover in a timely manner to avoid damage to vegetables.

Sunshade net coverage time should not be too long, the summer should not exceed 5 hours, when the outside light to reduce immediately after the opening, to ensure adequate light, increase vegetable production. When setting up the sunshade net, the sunshade net can be supported to leave a gap of about 20 centimeters from the ceiling film. After a certain ventilation belt is formed, the sunshade cooling effect is better. It is also possible to put soil bags on the main frame of the shed room. The front shed of the shed is placed between 3-5 places of abandoned straw mats. The purpose is to prevent the shade net from clinging to the shed film.

Cooling agent cooling

In recent years, more and more vegetable farmers have used cooling agents. Compared with covered shade nets, the advantage of greenhouse temperature-reducing agents is that they reduce the temperature by blocking light components (such as infrared light), and can be calculated more accurately and determine the shading rate according to the light characteristics of the vegetables needed to create the most favorable vegetables. Growing light environment. The cooling agent is easy to use and has good cooling effect. When used, it should be diluted with 5 to 10 times water according to the growth temperature and light requirements of different vegetables. According to the different requirements of vegetables on the light, choose different spray thickness and spray form. For the cold and low light requirements of the vegetables can choose full-spray, spray layer can be thicker; For high temperature and light requirements of the vegetables, spray thin or spaced spray.

Before spraying the temperature-reducing agent, if the thick film of dust accumulates on the shed or there is uncleaned mud on the pellicle, the use of the cooling agent will be greatly affected. Before spraying the cooling agent, it should pay attention to the local weather conditions, determine that there is no rain on the day, and spray at a high temperature at noon and the surface of the film is dry, so as to avoid the dew on the surface of the film to affect the adhesion of the cooling agent. effect. The sprayer used when spraying is required has good atomization performance to ensure that the fog is small and evenly sprayed.

Cooling mud

Spilling mud is a method of soil, without spending money, the effect is not as good as the shade net, but it can also reduce the temperature inside the tent. When the light is strong, it will splash more, and when it is not strong, it will be less splashing. However, mud splashing also has drawbacks, easy to spray uneven, easy to be washed off after the rain, if the spray is too thick, the equivalent of covering the shade net throughout the day, prone to low light hazards for a long time. In order to prevent the mud from being washed by rain, a vegetable farmer greatly increased its anti-erosion ability by adding a certain amount of flour to the mud.

Cooling with water

While taking measures such as covering shade nets or spraying temperature-reducing agents such as cooling agents, vegetable farmers can also adopt methods of cooling water.

Reasonably watering vegetables in the greenhouse in the summer watering on the one hand is to add moisture to the vegetables, but also bear the effect of cooling the greenhouse, so pay attention to the combination of water and small water. Especially for the newly planted seedlings, it is particularly important. Drenched water can promote hair rooting, and small water wetlands can cool down. Watering can take away a lot of heat, but do not water at high temperatures in the noon, easily fry the roots, cause capillary root injury, severe plant death caused by wilting, in the summer generally choose to water in the morning to ensure that the soil moisture is appropriate.

Spraying Water to Reduce Temperature Many vegetable growers who grow summer vegetables are currently equipped with sprinkler irrigation facilities on the top of some greenhouses. There is a sprinkler at about 5 meters in the center of the skeleton of the greenhouse. The baffles on the sprinkler head are constantly oscillated by the impact of water, making the shed Each position in the room can be sprayed with water. This way of spraying the leaves is very effective in reducing the temperature in the greenhouse and increasing the humidity in the greenhouse. Currently, there are many facilities on the market that can achieve water spray cooling, and vegetable growers can choose the installation that is suitable for their use. When spraying water, it is necessary to pay attention to the interval of water spray. After the hot weather comes, generally from 9 am or so, the temperature inside the shed will be close to 30 °C or even higher, which requires the start of water spray, it is recommended that each spray 10 minutes, spaced half an hour later sprayed water for 10 minutes, Every time it is guaranteed that there will be water on the leaves of the vegetables but not dripping, it is best not to exceed 4 times a day, otherwise it will easily lead to excessive moisture in the shed and infect other diseases.

Strengthen the management of the shed

In summer, the outside temperature is very high, even close to 40°C, not to mention the temperature inside the shed, certainly above 40°C. On the basis of measures such as shading and spraying water, vegetable farmers can also cool down by spreading wind, leafing and leafing. In summer, it is rainy. After the rain, the vegetable growers must promptly open the vents. If the vents are not opened in time after the rain, high temperature and humidity in the sheds can easily lead to diseases. In addition, the shed must pay attention to the release of wind from both sides of the shed and the shed, to achieve air flow, if only from both sides of the air, the effect is poor, it is difficult to reduce temperature. When the leaves are dredged, the leaves should be cut off, and the leaves should be properly kept to block the light. On the one hand, the sun-burning fruit should be prevented, on the other hand, the surface soil should be shielded, direct sunlight should be reduced, the soil heat storage should be reduced, and the night temperature should be too high.

Operation line laying straw to lower temperature

While reducing the temperature inside the shed, we must also pay attention to reducing the ground temperature of the surface soil. The practice of laying stalks inside the shed has a good cooling effect. During the daytime, light enters the shed and shines on the surface of the soil. The heat is then transmitted to the soil, stored, and then released at night, causing the night temperature to fall. By operating the method of laying straw in the row, heat storage in the soil during the day can be reduced. Before laying the straw, the vegetable farmer can pour small water first, completely wet the soil, and then spread the straw, which can not only reduce the evaporation of water, keep the soil moisture, but also reduce the heat storage.

Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone

Peptone CAS No.73049-73-7

Peptone Basic Information
CAS: 73049-73-7
MF: C13H24O4
MW: 244.32726
EINECS: 615-895-9
Mol File: 73049-73-7.mol

Peptone Structure

Peptone Water,Peptone Composition,Peptone Water Composition,Peptone Meaning,Peptone Water Preparation

Shandong YingLang Chemical Co.,Ltd , https://www.sdylhgtrade.com