The main role of foliar fertilizer is to make up for the lack of soil fertilization, prevent premature plant failure, and promote crop nutrient balance. The correct use of foliar fertilizer not only enhances crop resistance, but also improves crop quality and yield. To effectively improve the use of foliar fertilizer, the following points should be taken into account when using it:
First, choose a good quality foliar fertilizer. When choosing to purchase foliar fertilizer, pay attention to whether the trademark, enterprise standard number, product quality certification, agricultural use registration certificate, plant name, site, and production date on the packaging bag are complete, the packaging is in good condition, and the liquid fertilizer must pay attention to solubility. How, with or without precipitation.
Second, spraying foliar fertilizer should be targeted. It is generally believed that in the case of insufficient basal fertilizer, leaf fertilizers dominated by nitrogen and phosphorus fertilizers can be used; when sufficient basal fertilizers are used, the use of trace element-based foliar fertilizers can be selected, and growth can be selected according to the needs of the crops. Regulates the foliage of the material. For example, spraying boron fertilizer during the budding stage can prevent falling bells and increase fiber length; applying zinc to rice and corn can prevent the growth of rice seedlings and corn white seedlings; spraying peanuts and soybeans containing molybdenum fertilizer in the southern acidic soil. The oil content and protein content can be increased; the application of brassin can make vegetables mature in advance, reduce the cellulose content, improve the taste and increase the sugar content.
Third, foliar fertilizer spraying concentration should be appropriate. Spraying foliar fertilizer must strictly control the spraying concentration, especially for foliar fertilizers containing growth regulators. For example, triacontanol at a concentration of 0.5-1 ml/l can promote seed germination, but concentrations above 1 ml/l can inhibit seed germination. Therefore, it is necessary to spray in strict accordance with the concentration required by the instruction manual of various foliar fertilizers.
Fourth, grasp the best spraying time and spray site. In order to facilitate the absorption of nutrients by crops, spraying time is best selected in the early morning or late evening when the wind is not strong. After spraying foliar fertilizer in case of heavy rain within 24 hours, it should be sprayed once more. If it is a small area spray can be sprayed on the back of the leaf, because the back of the leaf absorbs nutrients faster than the leaf surface.
Author: Xin Feng
Material Selection:
1. Frame: 2MM thicknesses cold-roll Stainless steel.
2. Motor: Germany SEW brake motor (outer), power 0.75KW, power supply 220V.
3. Control system: Imported Japan Mitsubishi converter and PLC to control of electric box (150%1HZ)
4. Opening & closing speed: 0.6-1.5m/s (adjustable).
5. Safety Device: Korea Photocell Sensor, emergency stopping reaction when sensing obstacles.
6. Curtain: France high-density polyester fiber and the surface coating processing, thickness 0.8MM, variety colors can be chose: Red, yellow, blue, green, orange, gray, white, transparent, etc. Tensile strength: 4000/3500N/5cm, tear strength 600/600N. Fire-proofing level: German standard DIN75200 Usage temperature: -30 ° C +70 ° C.
7. Wind resistant: The Aluminium alloy Reinforce Girder to increase wind resistant effect.
8. Curtain replacement function: Aluminium alloy Reinforce Girder is loaded between 2 pieces Curtain, can be replaced easily if any curtain broken, save your cost.
9. Transparent window: 1.2MM thickness transparent PVC window, size and location is up to your request, more safer.
10. Seal: Seal brush are Installed inside the guides, and the special bottom design, to fit any uneven ground.
11. Cotrolling way: Push button + radar sensor, very convenient.
12. Limiting Switch: Mechanical limiting switch, easily and exactly.
13. Emergency STOP: With emergency stop button on control panel, can stop easily by
Hand once disconnect or accident
14 Fault recovery function: All Hongfa's production is with fault recovery function, system will self-recovery after power cut off.
15. Delivery time: About 7 business days with contract and deposit confirmed.
16. Pyament item: 50% before production, and the other 50% before shipment.
17. Warranty Details: We provide 12 months warranty for all doors and accessories (except man-made disasters, Irresistible natural disasters, ect^).
We have many professional engineers with rich experience, qualified products, perfect service system, and good cooperation relationship with many famous companies.
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SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfahsrd.com