"Looking at the sea mode" is on, and many places in Shandong welcome heavy rains and heavy rains! The temperature "falls off a cliff", pay attention to vegetable planting!

From day to night on the 11th, the weather in Zibo, Weifang and Qingdao was overcast with moderate to heavy rain and local heavy rain accompanied by thunder and lightning. The weather in southern Shandong was cloudy with thunderstorms or showers in some areas, and the weather in other areas was overcast with thunderstorms or showers. The northerly wind turns to the southerly wind of magnitude 3 to 4, and the gust of magnitude 7 to 9 in the thunderstorm area is locally above level 10.

The lowest temperature at night: around 28°C in southern Shandong, around 23°C in northwestern Shandong, central Shandong and inland areas of the peninsula, and around 26°C in other areas. Last week's Shandong people were still experiencing the sweltering heat, and today's Shandong brings you into the "sea-watching mode".

The management of vegetables in greenhouses in rainy days in autumn should focus on "two defenses". The continuous rainy weather has a certain impact on vegetable production. Many greenhouse vegetables have symptoms such as leggy growth and frequent bacterial diseases, which reduce the yield and quality of vegetables. So, in the current continuous rainy weather, what problems should be paid attention to in vegetable management?

First, pay attention to the weather

Fortunately, the technology has developed now, and many technologies are relatively mature, especially in the prediction of weather forecasts, which are much more accurate than before. In addition, the practicality of mobile phones is relatively high now, so we can use mobile phones to understand the changes of the weather at any time. I believe that many people have used it. The weather forecast on the mobile phone can be accurate to the hour, and when it rains, it can be accurate to the hour. If you can pay attention to the push of weather information in real time, you can take measures in advance.

2. Anti-humidity is too large. For cooling and dehumidification, in addition to increasing air vents, setting up shading nets or spraying cooling agents, which are commonly used by vegetable farmers, laying organic matter such as rice husks, straws or broken straws in the operation row is a very effective moisture removal and cooling for vegetable farmers. method. This is because laying these organic substances is like laying a layer of "mat" on the ground, which can reduce the heat absorption of the soil, reduce the storage of heat in the shed, and have a good effect on the cooling of the shed. More importantly, laying The organic matter such as rice husk, straw or broken straw has the function of hygroscopic and moisturizing, that is, it absorbs the humidity in the air and reduces the amount of soil evaporation, so as to achieve the purpose of cooling and reducing humidity.

3. Prevent rainwater from entering the shed. The front face of the solar greenhouse is the main channel for rainwater to enter the shed. Therefore, a drainage ditch should be prepared in advance at the front face to prevent rainwater from flowing into the shed. For the shed that is dug deeper under the front face, care should be taken to protect the wall at the front face. body. It can be repaired with soil or built with bricks before the rainy season; in addition, if the entrance and exit of the shed is located on the back wall, it is recommended that vegetable farmers set up one or two steps at the entrance and exit to prevent rainwater from flowing into the shed from the entrance and exit. The ventilation openings on both sides of the arch shed are also channels through which rainwater can easily "sneak in". Vegetable farmers can set up rain-blocking films at the ventilation openings in advance to prevent rainwater from entering the shed.

Vegetable farmers are reminded to note that in case of rainwater entering the shed, the first thing the vegetable farmers should do is to drain the accumulated water out of the shed, and then hoe when the soil is semi-dry and semi-wet to loosen the soil, increase soil permeability, reduce The phenomenon of root retting and the occurrence of various soil-borne diseases.