Pay attention to the application of carbon dioxide fertilizer
1. When planting melon and fruit vegetable crops on soil with high fertility, it should be applied after planting or slowing down the seedlings, until the end of the harvest of the melons and fruits, and the gas fertilizer should not be terminated halfway.
2. Seedling stage is a period of better application of gas and fertilizer, which is conducive to cultivating strong seedlings, accelerating seedling development, and early flower bud differentiation of fruit and vegetable vegetables, which is very obvious for improving early yield.
3. The carbon dioxide concentration required by leafy vegetables is greater than that of fruits and vegetables. Leafy vegetables generally start to apply carbon dioxide when they are planted and emerged. It should be used continuously. Usually, the gas fertilizer is used continuously for 7 to 10 days, and the effect of increasing the application of gas fertilizer can be seen. .
4. The application of carbon dioxide in the facility requires good sealing performance of the facility structure. If the ground temperature or temperature in the greenhouse is too low, the effect of adding gas fertilizer will be small, and it can be suspended.
5. Increasing the application of gas fertilizer basically does not change the original field management method, but due to the strong growth of crops after the application of gas fertilizer, the water and fertilizer amount should be increased appropriately, but the water and fertilizer should be avoided and the growth should be long. Apply phosphorus and potassium fertilizers and properly control nitrogen fertilizer.
6. The appropriate concentration of carbon dioxide has been studied. In order to increase production and reduce costs, it can also prevent the harm of high carbon dioxide concentration on crops. The concentration should be controlled below the crop saturation point, generally not exceeding 1000 PPM.
7. The daily amount of carbon dioxide should be flexibly controlled. If it is applied on sunny days, the amount of cloudy weather can be reduced by 20% to 30%. On cloudy days, it can be reduced by 50% compared with sunny days. Rain and snow can be kept.
8. Continuous application is better than intermittent or time use, and stop production increase. During the deep winter, the greenhouse does not ventilate, and the time of applying carbon dioxide should not be interrupted. Therefore, in addition to rain and snow, continuous use should not be terminated.
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