Wheat is within 2 months after harvest. There are also obvious after-ripening periods. The upper layer of the grain pile is prone to "sweating", fever, worms, and mildew. First, the problem of storage 1 McMug top. The moisture released during the ripening period of wheat is absorbed by the upper layer of wheat grain and expands, forming a hard block on the surface of the wheat heap; uneven temperature, moisture stratification, temperature difference in the wheat heap, moisture and heat transfer up to the dew point and condensation, resulting in knot top, generally Occurrence of 30 cm below the surface layer will cause local mildew and spread to the whole heap of heat and mildew. 2 mold deterioration. Due to the large amount of damp heat released during the ripening period of wheat, the temperature inside the grain piles. The increase of moisture causes the proliferation of mold and physiological changes in the wheat grain, which makes the wheat begin to mold locally. Continued development will lead to deterioration of the whole mold. 3 worms. The pests mainly include wheat moths, corn elephants, grain robbers, scorpions, and wheat. The temperature rises during the ripening period and the humidity increases, which can cause the rapid propagation of pests. Several pests can occur at the same time, causing serious damage to wheat and depriving it of economic value. Large amounts of pests will produce large amounts of damp heat and excretion, which in turn will cause heat buildup in the grain piles. Second, safe storage method 1 timely drying. After the wheat is harvested, it should be sunny and windy and quickly dry. First heat drying or roof, and then spread the sun, so that the wheat temperature reached 48-50 °C for more than 3 hours, wheat moisture can be reduced to safe storage of water below 13%. In order to improve the insecticidal effect, pile up a large heap before storage, heat for 1 hour, so that the temperature of wheat is maintained at about 45 °C, and then hot and warehousing. Do not dry it for a long time so as not to make the wheat return to the bad weather. 2 moisture insulation. Before putting wheat into the container, we must first make the warehouse container moisture-proof and heat-proof, the bottom no moisture-proof equipment should be covered with plastic cloth and linoleum to prevent moisture, and gaps should be wiped, so that the container on the warehouse does not leak, no damp, no gap, Face light. In order to prevent the presence of debris, flocking empty containers or containers with 3 grams of aluminum phosphide per cubic meter can also use 50 times liquid insecticide to spray to destroy the insects. Storehouse container should be in a dry and ventilated place. 3 quickly closed. The wheat is sunned to a moisture content of 13% or less, and it should be sealed immediately after it is hot and stuffy. Prepare hot surface sand, fine dry soil, and clean wheat straw to cover the surface of the warehouse and containers. For ease of management, a layer of old cloth or used sacks can be laid before sealing. Face bags, then use sand pressure or covered with wheat stubble. Of course, old cloth or sacks, face bags should also be insecticidal. When confined, the sand should be paved evenly to ensure that the wheat inside the container and the container are completely isolated from the outside world, and the external moist and hot air is prevented from entering the grain pile, so as to prevent the wheat from being affected by heat and moisture, and the mold of the worm will deteriorate.
Blood Collection Tube,Vacuum Blood Tube,Blood Test Tube
Molded Vial Co., Ltd. , http://www.nsmedicalcontainer.com