How to manage shed vegetables in foggy days

Fog is a common weather phenomenon in early winter. The dense fog-filled weather is often accompanied by low temperature, high humidity, and low sunshine, which is extremely detrimental to the growth of greenhouse vegetables, and it is easy to induce various pests and diseases and must be strengthened.

1. Insulation antifreeze. Fog days should be properly increased cover to prevent vegetables from freezing. In case of continuous fog and fog, the cover must be exposed properly. After the lift, attention should be paid to observing the temperature change. If there is a slight decrease, cover should follow the cover; if it rises slightly, cover can be re-covered before 2 pm it is good. If the temperature in the shed continues to drop, artificial heating is required.

2. Increase lighting. Keep the film clean and increase the amount of light transmitted. Strengthen the management of greenhouse sheds, and make full use of cloudy scattered light to make photosynthesis of plants through timely disclosure and timely cover. If necessary, three 40-watt fluorescent lamps can be used together to hang 45 cm from the seedlings, or use a 100-watt high-pressure mercury lamp to suspend artificial light at 80 cm from the seedlings.

3. Control humidity. Greenhouse vegetables must be strictly controlled watering from beginning to end, especially in foggy days, generally do not water, to prevent injury. If the humidity in the booth is too large, promptly ventilate and drain. When it cannot be ventilated, weeds can be used to soak damp wood ash or fine dry soil.

4. Scientific medication. Foggy days to prevent greenhouse diseases and insect pests, we must pay attention to the use of symptomatic, high-efficiency pesticides, and try to use smoke or dust method. If spray application is used, the number of controls should be minimized to reduce the humidity in the shelter.

Anthocyanidins is a kind of water-soluble natural pigments widely existing in plants in nature. They are colored aglycone obtained from the hydrolysis of anthocyanins. Most of the main colorants in fruits, vegetables and flowers are related to them. Under the condition of different PH value of plant cell vacuoles, anthocyanidins make the petals colorful. The main functions about anthocyanidins are antioxidant and free radical scavenging function, nutritional fortifier in food and natural pigment.

Anthocyanidins

Black Berry Extract,Mulberry Fruit Extract,Cranberry Extract Powder,Blackberry Flavoring Extract

Xi'an Longze Biotechnology Co., Ltd. , https://www.bestbilberry.com