Hybrid corn seed storage technology
I. Preparation of Hybrid Maize before Storage In the harvested hybrid corn, the mildew bag should be sorted out, and the good, medium and poor pilings should be stacked on the mirage or wooden building, with a thickness of about 20cm, often turning, and then air-dried and threshed. , You can also twist and twist the hybrid maize into a handle, hang it up to dry it, or put it into the baking room and slow drying and then threshing. After the threshing, the hybrid corn seeds should be clean and exposed to sunlight for 2-3 days. The sun's ultraviolet rays should be used to kill the microorganisms attached to the corn kernels, and the moisture content should be reduced to below 14% for safe storage of water. The petal, with a flat section and crisp sound, prevents the hybrid corn from mildew during storage. Then use 50% pungent sulfuric acid or 80% dichlorvos 1500 times to spray inside and outside the empty warehouse and the surrounding environment (walls, floors, etc.). Newly-prepared hybrid corn storage containers must also be sterilized prior to placement to kill pests that cross over the sheds, wall joints, and panels over the winter. II. Construction and Sealing Methods for Storage Containers 1. Construction of Storage Warehouses According to the economic conditions of the family and the amount of hybrid corn to be stored, round or square hybrid corn storage warehouses are built with bricks and cement in places that are convenient for moisture protection. It is kept in isolation from other foods to achieve the purpose of anti-mildew, insect repellent and rodent-proof. 2. Manufacturing of enclosures for grain storage containers Cut 0.35 mm thick sheet metal into two pieces of 100 cm and 200 cm in size, and apply 7 holes at a joint width of 4 cm. Tighten the screws to form a metal skin container. It is also possible to use two fiberboards of 100 cm and 200 cm in size instead of iron sheets to make the same size of fiberboard enclosures. After the enclosure is made, use a wide clear tape or paper paste at the joint. When used, cover the bottom of the mask with 0.8 mm plastic film, and then insert the hybrid corn. Then use a fresh cow dung or a suitable amount of stove ash to paste into a paste to seal the feet. The height of the paste is about 10 cm, and then fumigate after application. 3. Renovation of old grain storage containers Non-standard old grain bamboo containers, old containers, and old wooden cabinets in rural households can be packed with tape or paper as described above, or they can be filled with fresh cow dung. After the paste is level, wait until it is dry and seal it with a layer of plastic film or two layers of paper, and then seal the grain. Third, the use of stored food agents 1. Aluminum phosphide tablet fumigation method Weaving a strong, long and wide are 10 cm in the cloth, the aluminum phosphide pieces are bandaged well, with a wooden stick to the drug package on, in, On the next three floors, 6-8 pieces of aluminum phosphide pellets per 1,000 kg of hybrid corn are interspersed into the container filled with hybrid corn. The inserted medicine packet is approximately 10 cm from the container wall. The container mouth is then tightly sealed with a 0.8 mm plastic film so that it can be used as a closed fumigation. 2. Phosphate-zinc acidification method The hybrid corn is placed in a storage container to a distance of 10 cm from the mouth of the container. Using 3 large caliber bottles, the 2 kg of hybrid corn is mixed with 8 ml of sour vinegar and the vinegar is first added. Insert 1/2 into the bottle, triangle form 10 cm from the inner wall of the container, pour zinc phosphide into the bottle, and quickly seal the cover with 0.8 mm plastic film. 3. Preserved grain and phosphorus grain storage method Packed uniformly in a container for 400 kg of phosphorus per 1,000 kg of hybrid corn, or a layer of 30 kg (300 kg) of hybrid corn, with a layer of phosphorus (100 g). Until full. 4. Insecticide-pharmaceutical carrier mixed grain storage method According to the standard of 30g of effective insecticidal phosphorus or 30g of 70% insecticide-phosphorus preparation per 1000kg of hybrid corn, the required agent is first mixed with water 1 times and 1kg rice bran or sawdust and mixed. Prepare the drug carrier and mix it with the corresponding amount of hybrid corn. 5. Dichlorvos smoke method 80% of 50 grams of dichlorvos, soaked the old cotton wool, on the bottom of the container covered with plastic film, padding mat or straw mat, into 500-800 kg of hybrid corn, and then 0.8 ml plastic film seal smoked. 6. The phoxim oxime method uses 50% phoxim 2 grams plus 100 grams of water and 0.5 kilograms of rice bran to make a poison mash, and mixes 100 kilograms of hybrid corn. (Ding Liang, Rural Social Economic Survey Team, Heling County, Heilongjiang Province)