Shandong high temperature warning upgrade! Tomorrow and the day after tomorrow, some areas such as Jinan, Weifang, Heze and other places may exceed 40 degrees Celsius, what should I do with the temper

The Shandong Meteorological Observatory upgraded the high temperature yellow warning to the high temperature orange warning: On the 3rd to 4th, high temperatures of 35 to 38 ℃ have occurred in parts of Liaocheng, Dezhou, Binzhou, Dongying, Jinan, Tai'an, Zibo, Weifang, Heze, Jining and Zaozhuang weather. Affected by the subtropical high pressure, it is expected that the highest temperature in the above-mentioned areas will reach 37-39°C on the 5th and 6th, with a relative humidity of 60%-90% in some areas.

The Shandong Meteorological Observatory reminded that the high temperature process has high humidity, high body temperature and long duration. It is necessary to prevent the adverse effects of continuous high temperature.

The maximum temperature in the shed at noon can reach more than 40 ℃, resulting in poor growth of vegetables and high temperature obstacles. In addition, if the night temperature is too high, vegetables are prone to leggy, vegetative growth and reproductive growth are not balanced, which affects the quality of flower bud differentiation and leads to deformed fruit. too much, seriously reducing the planting efficiency.

The greenhouse cooling method can be summed up in four words - the combination of inside and outside.

In addition, the purpose of reducing light is achieved by setting sunshades outside the greenhouse.

1. Laying a sunshade net:

It should be noted that the black shading net needs to be pulled and placed every day, and the shading net cannot be covered all day. In addition, prop up the shading net and leave a gap of about 20 cm from the shed film, so that after forming a ventilation belt, the effect of shading and cooling is better.

2. Sprinkle mud:

Splashing mud can also reduce the temperature in the shed. Splashing is better than no splashing. When the light is strong, splash more, and when it is not strong, splash less. The disadvantage is that the scour resistance is poor, it will be washed away when it rains, and it has to be splashed again.

3. Spray cooling agent:

Spraying a cooling agent is by far the easiest way to do it. Compared with the greenhouse without spraying cooling agent, the average surface temperature can be reduced by more than 10 ℃.

Inside, it is to find ways to reduce the temperature in the shed by installing some equipment in the shed or releasing water in the canal.

1. Irrigation in the canal:

When the temperature in the shed is high at noon, the water channel can be filled with clean water to reduce the temperature in the shed.

2. Laying straw in rows:

Before laying straws, first water a small amount of water to thoroughly wet the soil, and then laying straws can not only reduce water evaporation, maintain soil moisture, but also reduce heat storage, and the effect is better. The lowering of the soil temperature can significantly reduce the night temperature, prevent the plants from growing too long, and at the same time, it will not "cover" the bad root system.

3. Install "simple air conditioner":

Conditional sheds can install spray equipment above the shed during the high temperature season in summer. When the temperature in the shed is too high, turn on the spray equipment to spray clean water, which can reduce the temperature in the shed.

4. Strengthen the management of the shed

When rainy days come, vegetable farmers close the air vents. If the air vents are not opened in time after the rain, the high temperature and humidity in the shed will easily lead to diseases. In addition, when ventilating the arched shed, pay attention to ventilating from the ridge and both sides of the shed to achieve air flow. If the air is vented from both sides alone, the effect is not good and it is difficult to cool down. Watering can take away a lot of heat, but do not water during high temperature at noon, as it is easy to fry the roots, resulting in injury to the capillary roots, and in severe cases, the plants will wilt and die. In summer, watering is generally chosen in the morning to ensure that the soil humidity is appropriate. Thin branches and leaves, keep leaves properly to block light, on the one hand to prevent sunburn, on the other hand block the surface soil, reduce direct sunlight, reduce soil heat storage, and avoid excessive night temperature.