At this stage, light, temperature, and moisture are all in suitable conditions. Tomatoes are not well colored and have a great relationship with fertilization imbalance. PH test paper can be used to measure the pH of the soil, when the PH is greater than 6.5, especially when greater than 7.0, the soil will inevitably lack trace elements. Can be applied with water per acre borax 2 ~ 3 kg, zinc sulfate 5 ~ 6 kg, 6 ~ 7 kg of ferrous sulfate, manganese sulfate 5 ~ 6 kg, magnesium sulfate 10 kg, (according to this party can only be applied per year per acre once). Or it is a foliar spray of medium and micro-fertilizers containing elements such as boron, zinc, iron, manganese, and magnesium. Usually the concentration is controlled every 25 ~ 35g of micro-fertilizer to 30 kg of water, once every 5 to 7 days (if it is sprayed with borax or boric acid, the concentration should be controlled at 3000 ~ 6000 times). It is best to spray on a sunny evening, focus on spraying the back of the tomato leaves, try to keep the leaves moist, extend the leaf absorption time, if necessary, can be mixed with insecticide fungicides, while preventing and controlling various pests and diseases.
When the temperature reaches 24 degrees, lycopene can be produced in a large amount, but as the temperature rises, the photosynthetic rate of the plant decreases, which affects the accumulation of lycopene. Therefore, when the temperature is high, tomato fruits are also colored. Poor. Therefore, the temperature inside the greenhouse is kept at 24 degrees, which is the optimum temperature for coloring tomatoes.
The valve is a series of gas emergency shut off solenoid valves, specially designed as gas pipe breaker for emergency use. It can be connected with gas leaking detection sensor, fire alarm circuit or other intelligent sensor modules so that on site or remote shut down on gas supply (manually or automatically) is possible, hence ensuring the safety on gas usage. The valve features an auto-close when strong vibration is detected. After close, manual operation is required to turn on the valve. This feature meets safety regulations in the event of an accident.
Gas Solenoid,Solenoid Valve,Gas Solenoid Valve,Solenoid Operated Valve
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