In order to improve the yield and quality of watermelons, there is much emphasis on fertilization. The following six points should be noted in production.
One, nitrogen, phosphorus, potash fertilizer, can not be a single application of nitrogen fertilizer. The fertilization of watermelon should be combined with nitrogen, phosphorus, and potassium fertilizers. It is not possible to apply nitrogen fertilizer by itself. The single application of large amounts of nitrogen fertilizer makes the plants extremely prone to growth and is not conducive to the development of flowering melons and fruits. For this reason, it is best to use chicken manure, cake fat, human waste, Garbage fertilizer, grass ash and other farmhouse fertilizers are the main products. This way, the nutrients are comprehensive and the quality is good.
Second, do not apply chlorine fertilizer. Watermelon is a bogey crop, the application of fertilizers should use urea, ammonium sulfate, potassium sulfate, etc., should not use ammonium chloride, potassium chloride and other chlorinated fertilizers, containing chlorinated fertilizer will affect the accumulation of sugar.
Third, do not apply concentrated fertilizer during drought. When the weather is dry and the soil moisture content is low, applying fertilizer at this time will make the cytoplasmic solution of the root cells penetrate outwards, resulting in physiological water shortage and death of plants. For this reason, the application of high-concentration liquid fertilizer must be preceded by watering or irrigation to make the soil Wet before applying fertilizer. Fourth, fertilization should not be done on rainy days. Overcast and rainy days, the air temperature is high, the soil moisture content is high, and the ability to absorb fertilizer and keep fertilizer is poor. At this time fertilization, fertilizer is not only easy to lose, but also caused by vine leaves long, tender and tender leaves tend to induce pests and diseases.
Fifth, can not be fertilized in the topsoil. Pay attention to deep application of watermelon dressing, timely covering after application, especially nitrogen fertilizer, if the table is applied, nitrogen is easily volatilized to produce ammonia gas, harm the leaves, and reduce fertilizer efficiency. And it will burn roots, so fertilize deep into the hole and then cover the soil to prevent loss of fertilizer.
6. Do not apply water immediately after applying urea. The nitrogen contained in urea is present in the form of amides. The amides are absorbed by the roots of watermelons after they have been converted to ammonium carbonate or ammonium bicarbonate. It takes 3-5 days to convert, and urea should be used as base fertilizer or top dressing. Only after it is converted can it be filled with water. As long as we pay attention to the above six points, the melon farmers can get good benefits.
1. Smart battery indicator
This product is designed with four high-brightness LED indicators. When discharging or charging, it can automatically recognize the status and indicate the power. When the battery is out, short press the button. The LED indicates that the power is about 2S and then turns off.
2. Battery Life Tips
When the number of uses reaches 150 times, the power indicator LED lights turn red to indicate power, indicating that the battery life has been reached, and the user can use it as appropriate.
3. Intelligent charging alarm
During the charging process, the battery detects real-time status and alerts for charging overvoltage, overcurrent and overheating.
4. Intelligent low voltage alarm
When the battery is in the state of discharge, when the voltage is detected to be low (only 3.7V), it comes with a buzzer alarm to remind, stop discharging, and alarm is issued.
5. Smart storage function
When the battery is in a high level for a long time and is not in use, it will automatically start the intelligent storage function and discharge to the storage voltage to ensure battery storage safety.
6. Automatic sleep function
When the battery is on and not in use, it will automatically turn off and turn off after 3 minutes to save battery power.
7.Software update function
This product has a software update function, you can connect the computer through the USB port or update the software through the mobile app to update the battery software.
8. Data communication function
This product is designed with two communication methods at the same time: USB Serial Communication and WiFi communication; Both methods can be used to get real-time battery information such as current, current, voltage. Battery usage, etc.; Flight Control can also establish a connection to this to communicate.
9. Battery record function
This product is designed with a unique logging function that can store and store data for the entire life of the battery. Battery log information includes cell voltage, current, battery temperature, number of cycles, number of abnormal states, etc. User can connect battery to view via mobile phone APP.
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