We use patented technology to penetrate and stick directly.
The surface of the board is directly laminated with melamine paper, without any interlayer in the middle, which improves the fire resistance level. It has no formaldehyde, no phenolic glue, high bonding strength, and good fire resistance. , Is a national A-level (national standard) fireproof board, the flame lasts for zero burning time, 800 ℃ does not burn, 1200 ℃ no flame, in line with the national A-level fire protection standards, the fire resistance limit reaches more than 4 hours, can be absorbed in the process of burning A large amount of heat energy prevents the fire from spreading and delays the increase of the surrounding temperature.
Our Melamine surface decorative magnesium oxide board can be boiled for 4 hours without the layers unfloding. In dry, cold and sloping weather, the performance is always stable, unaffected by condensed water droplets and vertical air, even if it is soaked in water for several days, it can be used normally after being recovered from naturally dried. It will not be deformed and affect the strength,and there're no No water droplets,no condensation phenomenons.
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2. Grasp the time of fertilization. According to the soil condition, the specific fertilization time is determined. The irrigated corn can absorb fertilizer quickly, and the topdressing can be 40-45 days after sowing; the high-yield irrigated land can be divided into secondary fertilization, and the first time is applied 20-25 days after sowing. The application rate is 30-40% of the total amount of fertilization, and the second fertilization is carried out 40-45 days after sowing. Dryland fertilizers melt slowly in the soil, and 30-40 days of topdressing can be selected after sowing. The quick-acting nitrogen fertilizer and ammonium bicarbonate can be topdressed according to the situation, and the urea should be applied 3-4 days in advance.
3. Appropriate fertilization amount and its ratio. Pay attention to balanced fertilization, not only to apply NPK, but also to supplement medium and trace elements to ensure high yield and quality of corn. To achieve high corn yield, 25-35 kg of urea can be applied per acre, 40-50 kg of superphosphate, and 15-20 kg of potassium chloride. .
4. Pay attention to the fertilization method. Regardless of urea, ammonium bicarbonate, and compound fertilizer, it should be applied as much as possible by applying a hole or ditch. The depth of application is 8-15 cm, which is not too close to the root of the corn to prevent burning. It is not advisable to water the urea immediately after application, and the watering effect is best after 3-4 days after topdressing. Practice has proved that the method of applying soil by ditch in the topdressing of corn can save about 10 kilograms compared with the surface application and save about 20 yuan.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
Fire-resistant Feature:
Waterproof Feature:
Summer corn balanced fertilization technology
1. Grasp the favorable timing of fertilization. Summer maize generally begins jointing 25 days after sowing and begins to differentiate into ears. After 40-50 days of sowing, it enters the stage of differentiation of maize ears and small flowers. At this time, the most fertilizer is needed, that is, the peak period of fertilizer is needed, which is also the key period for determining the yield. Farmers are used to call the big trumpet period. Therefore, 35-45 days after summer corn sowing is the most favorable time for summer corn topdressing. It should seize the opportunity to topdress as soon as possible to meet the nutrients needed for the entire corn growth cycle.
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