Winter seed preservation technology

corn

(1) Reduce moisture. Maize seeds have low water content, can prevent freezing damage, are not susceptible to insects and mildew, and can also postpone the maintenance of seed viability. The most effective measure to reduce seed moisture is ventilation. There are two kinds of ventilation: First, natural ventilation, according to the temperature and humidity inside and outside the warehouse, a reasonable opening and closing of doors and windows, the use of air convection ventilation, its effect depends on the internal and external temperature difference, wind speed, stacking method, stack size, seed pores Degree and so on. When the outside temperature and outside humidity are lower than the inside of the bin and the wind speed is large, the stacking is small and the porosity is large, the ventilation effect is good. Otherwise, the effect is poor. The second is mechanical ventilation. The outside dry cold air is blown into the seed heap or the hot and humid air inside the seed heap is sucked out to cool the seeds quickly and dry.

(2) Qiao storage. There are two methods: First, the panicle method to store the panicle, which is conducive to seed ripening and drying, reducing the damage of the worms and microorganisms; but the utilization rate is low. The second is the grain method. The requirements for seeds are more stringent, because the pellets are prone to insects and mildew. Generally, the relative humidity is less than 80%, and sugar is better. It is suitable for small storage in farmhouses.

potato

First, the potato seeds were sorted, and diseased and disabled people were sorted out. Then, the robust potato pieces were placed in nylon bags, each containing 10 to 15 kg, and piled in a vacant house. 1.5 to 2.0 meters, but you must stay away from the four walls and maintain a distance of more than 30 cm to prevent cold attacks.

Then use pots or bowls to hold the water and place it in the middle of the house. After the winter season, the temperature will drop. When there are signs of freezing on the water surface, the quilts should be covered to keep warm. A thermometer is hung in the room and adjusted according to the temperature display. The thickness of the quilt.

At the same time, in the deep winter season, hanging curtains on the doors, hanging curtains on the windows, and blocking the intrusion of cold winds outside, use this method to invest less, the temperature is easy to control, and the loss of seeds is low.

wheat

(1) Prevent moisture absorption. Wheat has strong hygroscopicity, thin skin, loose skin, red skin, hard skin than white skin and soft wheat have poor hygroscopicity. Therefore, wheat grains with water content below 12% should be put into storage in time, and closed storage methods should be adopted to reduce the moisture absorption of seeds and maintain seed viability for a longer period of time. When moisture is 13% to 14%, the seed temperature must be controlled below 25°C. When the moisture content is between 14% and 14.5%, the temperature must be below 20°C to prevent moisture absorption and ensure seed quality.

(2) Keep hot. Wheat has high heat resistance, high heat resistance of protein and respiratory enzymes, and high starch gelatinization temperature. Therefore, strong heat resistance, wheat grains with moisture content below 17%, as long as the temperature does not pass 54 °C, drying treatment will not affect the germination rate of the seeds (wheat seeds into the warehouse to kill insects is based on this principle), but The heat-resistance of physiologically mature wheat seeds is reduced, and it is not suitable for insecticides in hot storage.

(3) need to be cooked. The wheat species need a certain ripening period. The red hull wheat has a thick seed coat and the ripening period is longer than that of the white husked wheat, which can reach 80 days or more, and the white wheat in the north has only about 10 days. Without ripening wheat, there will be "sweat" and "instability" during the storage period. According to this situation, wheat seeds must be fully cooked before storage.

(4) Storage method. Wheat seeds can be stored in bags and bulk, sealed at low temperature, stored under pressure, and stored in hot places. These are effective storage measures. Wheat is a conventional variety, and most farmers can use porcelain vats and plastic bags for storage of a small amount of seeds. When storing with a porcelain urn, first put a certain amount of hay ash on the bottom of the cylinder, separate the seed and ash with kraft paper, place the fully sun dried seeds into a porcelain jar, and cover the surface again; use a plastic bag for storage. At that time, the seed moisture content must fall below the safe water content.


Surgical adhensive Non woven Plaster is ORIENTMED's main products. We have CE, ISO and FDA. Also we have help many clieits get the products registration in their Ministry of Health.

Material: Cotton material and coated with natural rubber and zinc oxide adhesive
 
Application: Ideal for fixing dressing and light duct at surgery.
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Material: Cotton material and coated with natural rubber and zinc oxide adhesive
 
Features and Advantages
Zinc Oxide adhesive provides strong fixation.
100% cotton of carrier allows skin perspiration.
Tears easily by hand. (zig-zag edges can be supplied)
2 colors available: white and skin
Normal size:
Width: 1.25cm, 2.5cm, 5cm, 7.5cm, 10cm
Length: 5 yards/meter, 10 yards/meter

If you need any other size or packing, we can make and supply for you.

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