Variety selection: Select the very early-maturing potato varieties harvested within 60 days after emergence.
Warm seeds, dicing, germination, and sun buds: Select disease-free seed potatoes to be placed in a room at around 20 °C, warming and germination for 7-8 days. After the buds sprout, cut the buds by buds, each piece is about 25 grams. After cutting, use a small amount of grass ash to mix the seeds. After 2 to 3 days, put the seed in the shed at about 20 °C, a layer of moist fine soil, one layer of each layer, 6 to 8 cm thick, 2 to 3 layers, the top layer is fine soil, and the upper mulch is germinated. . When the bud grows to 1 to 1.5 cm, the buds are planted to make the buds thick and soft, so as to facilitate planting.
Fertilization, land preparation, and degaussing: When the ploughing layer is perforated, 45-75 tons of fertilized manure, 300 kg of diammonium phosphate, 225 kg of urea, and 225 kg of potassium sulfate, and then cultivating after cultivating, ridge, ridge distance 60 cm . Use the tweezers to smash the clods on the ridges into the ditch, so that the ridges become shorter, so as to cover the soil after the film is uncovered and buckle the mulch.
Planting: Drill on the mulch by 20 to 25 cm plant spacing, 10 to 12 cm deep, planted with blocks, filled with water, covered with soil.
Field management: When the seedlings are arched to the top of the membrane, the seedlings are placed, and the membranes are sealed with soil; the seedlings that have not emerged should be opened every 2 inches, so that they can be ventilated with the outside to prevent burning. When a small amount of plants in the field are budded, the film is uncovered, and the grass is artificially taken and the soil is cultivated. At this time, the hoe is not available, so as not to shovel the small tubers. The leaves are sprayed with the potato swell and the foliar fertilizer, and the water is poured. After 1 week, the water is refilled.
Harvest: When the bottom leaves of the plants turn yellow, they can be harvested separately or in accordance with the squat, market supply and demand and price.
PC plastic,full name Polycarbonate.
PC plastic is a kind of excellent comprehensive performance engineering plastics.It has excellent physical, mechanical, electrical, and thermal properties,so it's known as the "king of the transparent plastic'
Classification:
Anti - static PC SHEET, conductive PC SHEET,fireproof PC SHEET,PC fiber - resistant, PC GF SHEET, PC+ABS SHEET,anti-ultraviolet ray resistance PC, food grade PC, anti - chemical PC.
Advantages:
1,Light weight
2,Impact resistance
3,Excellent physical, mechanical, electrical and thermal properties
4,Ultraviolet resistance
Disadvantages:
Polycarbonate is not resistant to ultraviolet light, no resistance to alkali, resistance to hydrolysis stability is not high, is the main performance defect is sensitive to the gap, resistance to organic chemistry, scratch resistance is poorer, long-term exposure to ultraviolet light yellow, are vulnerable to the erosion of some organic solvents.
Applications:
1. Dust-free room spacer
2. Equipment shield and test fixtures;
3. Commercial Building Lighting;
4. Soundproof walls;
5. Greenhouse;
6. Components for medical and pharmaceutical devices;
7. Face shields;
8. Skylights, etc
Modified use:
The purpose of the modified PC Plastic is to toughen, improve the processing performance, reduce the residual deformation, and increase the flame retardancy, etc.
PC/ABS can improve bending modulus, heat resistance and plating performance.
PC/PET and PBT can improve drug resistance and solvent resistance.
PC/PMMA added plexiglass to enhance the appearance of pearlescent color.
PC/PA and HIPS can improve impact toughness and surface finish.
PC/HDPE can improve water resistance, aging resistance, weather resistance and LDPE.
The PC Plastic USES fiberglass or carbon fiber to enhance modification and improve mechanical strength.
The flame retardant grade PC Plastic can be made with bromine flame retardant and antimony trioxide.
Other and polysulfone, aromatic polycarbonate, polyvinyl formaldehyde, polypropylene, polystyrene can be modified to achieve the balance between economy and performance.
Combustion characteristics:
Combustion condition: easy, softening foaming
Flame status: small amount of black smoke
After the fire: out of the fire
Bouquet: no special taste
Specification: the thickness of PC Plastic sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of 10-180mm is 600*1200 mm. PC Plastic sheet can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited.and The diameter of the PC Plastic rod can be produced from 2mm to 250mm, the length is 1 meter, and it can be ordered to be more than 3 meters in length.
Color: Black and clear, can also be made another color, and the color order is 500KG.
Modified varieties:PC Plastic can be added to the Glass Fiber, copper powder, and molybdenum disulfide enhancement plate according to customer's requirements.
Add antistatic agent to the permanent plate, the volume resistance value of 10 to the 6 to 9 power.
Add flame retardant to the flame retardant board from UL 94v-0 to HB combustion grade, and other modification requirements are required to customize various additional properties according to the actual use of the customer.
Product certification: most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.
PC Plastic Rod,Engineering Clear PC Rod,Engineering PC Plastic Rod,Engineering Clear PC Plastic Rod
Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com