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Adding organic fertilizer: Adding organic fertilizer can increase soil organic matter content, improve soil physical and chemical properties, promote root respiration and microbial decomposition, thereby increasing carbon dioxide release.
Deep application of ammonium bicarbonate: After the ammonium bicarbonate is applied to the soil, a certain amount of carbon dioxide can be released while increasing the concentration of carbon dioxide in the shed while the nitrogen fertilizer is being fertilized. Generally, 10 g of ammonium hydrogencarbonate is applied per square meter, and a deep application of 5-8 cm is applied once every 15 days.
The reaction of ammonium bicarbonate and sulfuric acid is released: a reaction of 2-3 kg of ammonium bicarbonate and 5-6 kg of dilute sulfuric acid per acre of greenhouse can make the concentration of carbon dioxide in the greenhouse reach the concentration required for vegetable growth.
The reaction device can be equipped with a special carbon dioxide generator, the ammonium bicarbonate is placed in the reaction tank first, and then the dilute sulfuric acid is placed in the solution tank, so that it flows slowly into the reaction tank along the pipeline to react and generate and release carbon dioxide. . During the gas production, the greenhouse should be sealed for 1.5-2 hours before the shed can be opened.
Disintegration with limestone: Set 2-4 limestone-filled earthen jars in the greenhouse, fill the bottle with waste sulfuric acid, insert a plastic tube into the bottle, hang it upside down on the greenhouse bracket, and connect the plastic pipe directly to the limestone. In the earthen jar, put some sulfuric acid every day to liberate the limestone from carbon dioxide.
China Cooperation Times
Applying qi and fertilizer to promote high yield of shed vegetables
Carbon dioxide is an indispensable gas for photosynthesis of green plants. Tests have shown that if the concentration of carbon dioxide in the greenhouse is increased to 1000 ppm, the yield of cucumber can be increased by 12%, the yield of celery can be increased by 50%, and the yield of tomato can be increased by 30%. Therefore, the application of gas fertilizer to supplement carbon dioxide is an effective shed vegetable stimulation measures, the main methods are as follows:
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