Ordinary Chinese cabbage is a kind of vegetable species that enjoys cool and cool weather conditions. During its growth, due to the high ambient temperature, it often results in leggy seedlings, high rate of dead seedlings, severe virus disease, bitter taste, and a significant increase in fiber content. The leaves are prone to yellowing, rot, etc., and cabbage cultivation causes no small problems. Therefore, in order to improve the quality of vegetable cultivation, common heat-resistant and high-quality Chinese cabbage varieties are urgently needed in summer cultivation, and conventional cabbage seedlings are researched using artificial climate chambers. Phase heat resistance is the basis for studying the comprehensive performance of plants adapting to high temperature conditions to provide a basis for the selection of new materials for common Chinese cabbage.
The artificial climate box is a kind of equipment that simulates the natural environment. It can create both low-temperature and high-temperature environments. Therefore, using an artificial climate box to study the heat-resistance at the seedling stage of common Chinese cabbage, it is possible to avoid interference from the external environment and create experiments. condition. During the experiment, 10 common Chinese cabbage materials with different degrees of economic traits and different degrees of autumn cultivation were selected, and artificial climate chambers were used for high temperature treatment. The day and night temperatures were set at 32°C/22°C, 35°C/25°C, and 37°C. /27°C, 38/28°C, 39°C/29°C, 40°C/30°C, humidity controlled at 50%, photoperiod 12h/12h (day and night), mild light 12000Lx, investigation of heat damage symptoms and calculation of heat every 24h Damage index.
Using artificial climate chamber high temperature treatment method, the results obtained show that under different high temperature stress, all test materials will have different degrees of thermal damage symptoms, such as leaf rewinding, chlorosis, etc., and with the increase of temperature With the prolonged treatment time, the heat damage symptoms have increased. The heat injury index of the seedlings was treated with 37°C/27°C (day/night) for 4 days in spring and autumn, and the difference in heat tolerance between common Chinese cabbage varieties could be significantly reflected. The use of natural temperature in summer after seedling growth at 37°C/27°C (day/night) does not significantly distinguish the differences in heat resistance between common varieties of Chinese cabbage.
Sanitary Ware Profile Extrusion Dies
Aluminum alloy sanitary ware refers to products made of aluminum alloy materials in sanitary products. Aluminum alloy is a metal material with the characteristics of light weight, high strength and good corrosion resistance, so it is widely used in sanitary products.
Aluminum alloy sanitary products include shower rooms, bathtubs, wash basins, toilet accessories, etc. These products usually use aluminum alloy frames, combined with other materials such as glass, ceramics, etc., to achieve beautiful and practical designs.
Aluminum alloy sanitary products have the following advantages:
1. Lightweight: Aluminum alloy materials are relatively light, making sanitary products easier to install and transport.
2. High strength: Aluminum alloy has high strength and can provide solid support and durability.
3. Good corrosion resistance: Aluminum alloy has good corrosion resistance and can resist the erosion of sanitary products by water vapor, humidity and other environments.
4. Easy to clean: The aluminum alloy surface is smooth and not easy to accumulate dirt, making it more convenient to use.
5. Beautiful appearance: Aluminum alloy sanitary products usually adopt modern designs and diverse color choices, which can meet the aesthetic needs of different consumers.
In short, aluminum alloy sanitary ware products have become a popular product in the sanitary ware market due to their lightweight, high strength, and good corrosion resistance. They not only provide a comfortable use experience, but also add a sense of modernity and style to the sanitary space.
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