The light conditions in the greenhouse directly affect the growth, yield and quality of vegetables. Especially in rainy weather, the light is weak. Insufficient illumination of greenhouse vegetables is a common problem. Insufficient illumination, not only can not carry out more vigorous photosynthesis, transpiration is also reduced, plant growth is weak, affecting the yield and quality of vegetables. Therefore, it is necessary to take some effective measures to improve the lighting conditions in the greenhouse, which is necessary for the production of greenhouse vegetables.

Reasonable layout. When planting different types of vegetables in greenhouses, the principle of “Northern High and Low South” should be followed to make the plants tall and orderly, and to minimize mutual occlusion. The same kind of vegetables are transplanted, and the seedlings are made to have the same size, so that the plants grow neatly and the shading between the plants is reduced. At the same time, it is better to do the planting in the north-south direction, so as to accept the sunlight as much as possible.

Keep the shed film clean. Water droplets, dust and other debris on the shed film will reduce the light transmittance by about 30%. After 2 days, 10 days, and 15 days of use, the light in the shed will be reduced by 14%, 25%, and 28%. Therefore, it is necessary to clean frequently, wash the dust, dirt and water droplets on the shed surface, and keep the membrane surface clean to increase the transparency of the shed film.

Reasonably uncover the straw curtain. Under the premise of doing the insulation work, the straw curtain and the delay curtain for heat preservation can be removed early, which can prolong the illumination time and increase the amount of light. Generally, the curtain will be uncovered 0.5-1 hour after the sun comes out, and the curtain will be covered half an hour before the sun sets. Especially in the rainy days when the rain stops, it is necessary to properly uncover the curtains to make full use of the scattered light of the sun.

Use a drop-free film. The drop-free film incorporates several active agents in the formulation, so that the affinity between the water molecules and the film is greatly reduced, and the water droplets flow into the ground along the film surface without water droplets. The use of a drop-free film shed can increase the light intensity in the shed and increase the temperature of the shed.

Set up the reflective screen. Use a 2m wide and 3m long aluminized film reflective curtain, hung in the north side of the greenhouse to make it vertical, which can increase the ground by 40% and the shed temperature by 3°C-4°C. In addition, laying a silver-gray mulch on the ground can also increase the light intensity between the plants.

Do a good job of planting. Timely management of pruning, snoring, tying vines, and old leaves is conducive to ventilation and light transmission conditions in the shed.

Sunlight is a necessary condition for photosynthesis of green plants. In the seasons with less light and low intensity, collecting sunlight in greenhouses plays an important role in improving vegetable yield and quality.

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Food Safty And Quality Service

what is Food safety and Quality services?

Food safety and Quality services is a broad field that covers a variety of professional activities and solutions to ensure the safety and quality of food from production, processing, storage, transportation to marketing. Here are some of the main services:
1. Regulatory Advisory and Compliance Services: Provide advice on national and international food safety regulations, standards and guidelines to help food companies understand and comply with relevant legal requirements.
2. Risk assessment and management: Identify and assess possible food safety risks in the food production chain, and develop and implement a risk management plan to reduce these risks.
3. Laboratory testing and analysis: Provide chemical, microbiological, physical and sensory testing and analysis services for food samples to ensure food quality and safety.
4. Supply chain monitoring and traceability: Through advanced technology and systems, real-time monitoring and traceability of the food supply chain to ensure traceability and transparency of the product source.
5. Education, training and capacity building: Provide food enterprises and related personnel with food safety and quality management training and education to improve their knowledge and skills.
6. Technical support and research and development: Provide technical support and research and development services for specific food or production process, including new product development, production process improvement and food safety technology research and development.
7. Crisis management and emergency response: In the event of a food safety incident, provide crisis management strategies and emergency response measures to protect public health and the reputation of the business.
8. Audit and third party audit: Conduct internal and external food safety and quality audits to verify that the enterprise complies with the specified standards and requirements.
The goal of Food Safety and Quality services is to protect the health of consumers, maintain public trust in the food industry, and help companies improve product quality, meet regulatory requirements and enhance market competitiveness. These services are usually provided by professional consulting companies, inspection agencies, scientific research institutions or relevant government departments.

Food satety quality control purchasing

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