1. Seeding period: Planting areas below 400 meters above sea level, planting seedlings from February 5 to February 15; 400 meters to 600 meters above sea level; planting seedlings from February 20th to February 30th; areas above 600 meters above sea level, March From the 5th to the 20th of March, planting seedlings.
2. Density of planting: The intercropping area (between the juvenile fruit trees and mulberry trees) is digging the nests in a double-row and two-row manner with a large row spacing of 5 meters, a small row spacing of 1 meter, a nesting distance of 1.4 meters, a nest depth of 30 centimeters and 160 nests per mu. High-back hillside or barren slope, 200 nests per mu.
3. Base fertilizer: 15 to 20 days before planting, apply 800 kg of decomposed compost or 500 kg of decomposed human and animal manure per acre, 30 kg of ternary compound fertilizer as base fertilizer, and evenly mix the soil fertilizer. After covering the soil, cover it with a 1 m wide plastic film. Fertilize the ditch and compact it.
4, pruning pruning: The main vine when the 5 to 7 leaves topping, choose to stay 3 to 4 strong lateral branches. Lateral vines grow rapidly in advance, so that the melon vines grow toward the middle of the big row, and then crushed. When the vine grows to about 50 centimeters, the vines are pressed once, and then once every 50 centimeters, they are pressed once and for all, 3 to 4 times before and after pressing. The method is to use lumps of vines to press on the ground, so that the top of the pumpkin is 15 centimeters exposed. After fruiting, leave 3 to 4 leaves topping.
5, fertilizer and water management: When the stability of 1 to 2 melon when the top dressing top dressing, mainly potash fertilizer, per acre applied to manure livestock manure water 1000 kg, potassium chloride 10kg; the first melon after harvest, per acre with maturity Human and animal manure water 1000 kg, potassium chloride 10kg, urea 5 kg topdressing once to prevent premature aging. Summer rain or continuous rainfall, timely drainage; during drought should pay attention to watering.
6. Artificially assisted pollination: The male flowers that were opened on the day were picked at 6 to 8 in the morning, and the corolla was applied, and then the stamens were gently applied on the head of the female flowers.
7. Diseases, Insects, and Rat Pest Control: Powdery rust is sprayed with 800-1000 times of liquid spray; aphids are suspended in the field with yellow insect traps or treated with 10% imidacloprid 1500 times; red spiders with 1.8% Ji Insecticide grams of milk with 20ml (5ml to 1 sprayer water) control; in the sowing, the result must pay attention to rodents, can be used Didixiao prevention.
8. Harvesting: After pollination for 40-50 days, the peel wax powder is thickened, the skin color changes from green to yellow or orange, and the epidermis becomes hard, that is, it has matured and can be harvested. When harvesting, select sunny day and morning dew to dry. Care should be taken to avoid scratching the peel. Take it lighter and keep the cucurbits to facilitate storage. The melons are stored in a dry and ventilated room.
Automatic Nucleic Acid Extractor
Nucleic acid extraction instrument is an instrument that automatically completes the nucleic acid extraction of samples by applying the supporting nucleic acid extraction reagents. Widely used in disease control centers, clinical disease diagnosis, blood transfusion safety, forensic identification, environmental microbial testing, food safety testing, animal husbandry and molecular biology research and other fields.
Using magnetic beads as the carrier, using the principle that magnetic beads adsorb nucleic acid under high salt and low pH value, and separate from nucleic acid under low salt and high pH value, and then move the magnetic beads or transfer the liquid to realize the entire extraction and purification process of nucleic acid. Due to the uniqueness of its principle, it can be designed into a variety of throughputs, which can be extracted from a single tube or 8-96 samples, and its operation is simple and fast. It only takes 30-45 minutes to extract 96 samples, which greatly improves the The experimental efficiency is low and the cost is low, so it can be used in different laboratories, and it is the mainstream instrument on the market.
Features of Magnetic Bead Nucleic Acid Extractor
1. Enables automated, high-throughput operations.
2. Simple and fast operation.
3. Safety and environmental protection.
4. High purity and high yield.
5. No pollution and stable results.
6. Low cost and easy to be widely used.
7. Different types of samples can be processed simultaneously.
Nucleic Acid Extraction System,Automatic Nucleic Acid Extractor,Nucleic Acid Extraction Machine,Nucleic Acid Extraction Instrument
Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com