Aluminum Profile is a kind of alloy material with aluminum as the main component. Aluminum rods can obtain aluminum materials with different cross-section shapes by hot melting and extrusion. However, the proportion of added alloys is different, so the mechanical properties and application fields of industrial aluminum profiles are also different. Generally speaking, industrial aluminum profiles refer to all aluminum profiles except those for building doors and windows, curtain walls, indoor and outdoor decoration and building structures.
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First, the time and method of carbon dioxide fertilizer The general time in the half-hour to 1 hour after the curtain was opened, to the end of the morning n points, a total of 2 to 3 hours. As the curtains are opened in the morning, the zucchini starts its photosynthesis, but the light is weak and the photosynthesis is weak. As the sun rises, the light intensity increases, the photosynthesis starts to strengthen, and the carbon dioxide concentration in the shed drops rapidly. At this time, carbon dioxide is applied. Specific usage: Hang a plastic bucket on the column every 6 to 7 meters in the east-west direction of the greenhouse. The barrel contains 2/3 volume of dilute sulfuric acid solution. Then a certain amount of carbon ammonia is weighed into a small plastic bag, tightly sealed, and 3 to 4 small holes are put on the bag and put into the barrel. The bag is pressed into the bottom of the barrel with a heavy object. Sulfuric acid and carbon ammonia The reaction emits carbon dioxide gas.
Second, topdressing the principle of carbon dioxide fertilizer 1. After cocoon Zucchini fruit set, gradually increase with the expansion of leaf area coefficient.
2. It should not be applied when the soil temperature in deep winter is not higher than 13°C. Put a barrel every 7 square meters before the Spring Festival. Each barrel can contain 150-250 grams of carbon ammonia, so that the carbon dioxide concentration in the shed can reach 800-1200 Ppm. After the Spring Festival, the ground temperature increases, and the high yield period of the squash is more appropriate. , 250-350 grams of carbon ammonia can be placed in each barrel, so that the carbon dioxide concentration in the shed reaches 1300-1600 ppm.
3. It depends on the plant to bear more fruit for a long time. If vegetative growth is too prosperous, use less or less if there are fewer results.
4. It is necessary to apply in sunny and warm weather. It is not suitable for rainy and snowy weather and it should not be used in the afternoon. After 50 years and 70 days after the first year, no further application is required.
The above is about some issues that farmers have to pay attention to carbon dioxide. Using carbon dioxide recorders to detect plants in greenhouses can better promote plant growth, improve plant quality and yield.
Analysis of Gas Control of Plants Grown in Greenhouse by Carbon Dioxide Recorder
How does the carbon dioxide recorder detect gas content? The cultivation of greenhouses has been prevalent in many parts of the country. Because the weather is uncontrollable, people think of using greenhouses to regulate the growing environment of plants in real time. For example, temperature, humidity, carbon dioxide content, and light intensity are all plant growth parameters. Can be controlled, in the greenhouse, carbon dioxide is too much or too little for the plants are unfavorable, which requires us to use the carbon dioxide recorder to measure.