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Herbaceous flower seed storage
First, after the harvest processing 1. Clean selection. After the seeds are harvested, they must be cleaned. The whole plant should be dried and then threshed, and even the fruits must be harvested to remove skin, flesh and various attachments. Flower seeds are small in size and light in weight. Some types of belts are short-thorned, and are easily adhered or mixed into sclerotia, insects, eggs, weed seeds, and other living impurities, as well as residual leaves, silt, and other non-living impurities. Carefully selected. 2. Reasonably dry. After the seeds are harvested, they must be sun-dried with the shells. Do not place the seeds on the cement drying field or expose them to metal containers in the sun. The seeds can be placed on canvas, mats, and bamboo mats to dry. Some seeds are afraid of light and can be naturally air-dried. That is, the seeds are placed in a ventilated, sheltered room so that they are naturally dry. The safe moisture content of general herbaceous flower seeds is less than 7%. Second, storage technology points 1. Pack flower seeds correctly. The general number is less, the life is short and the price is expensive. In most cases, a polyethylene foil composite film bag is used, and the jacket is generally a paper seed bag. Flowers containing aromatic oil should be stored in metal cans, wooden boxes or tinted glass bottles. Canned, aluminum foil bags can also be vacuumed or semi-vacuum when sealed to reduce the amount of oxygen in the container. The name of the seed and the year, month, day and age of the harvest should be correctly indicated outside the seed bag. 2. Low temperature moisture storage. The seeds that have been washed and dried to a safe moisture content and packaged in aluminum foil bags or metal cans should be stored under dry, sealed, low temperature conditions. Seed bags or cans should be placed on a shelf about 50 cm from the ground: Seed bags should not be in direct contact with the ground to prevent moisture. A small amount of seeds can be stored in a desiccator. The dryer can use glass bottles, cans with small mouth and lid, plastic barrels, etc. The bottom contains lime, silica gel, dry grass ash, charcoal, etc. as a desiccant, put the seed bag, and then seal it and put it in a cool, dry place. Third, the seed life The length of seed life and storage conditions are closely related. Seeds under warm, moist and unobstructed air conditions are active. The seed nutrients are rapidly consumed and the seed life is shortened. Seeds that have lost their vitality cannot be used for sowing and raising seedlings; they are at low temperature, dry and in slow air circulation. The seed life activities are slow and the seed life can be relatively extended. Therefore, 1 to 2 years of herbaceous flower seeds should be stored under low temperature, dry conditions and confined conditions. Preservation of Phlox, Kochia, Primulae for 1 year; 2-3 years of preserved butterfly flower, haloxylin, pansy, marigold, beautiful cherry, aster, daisy, nasturtium, fragrant bowl Beans, barley, string of red, straw chrysanthemum, snapdragon, cornflower; shelf life of 4 to 5 years with half-branch, zinnia, bamboo, incense, violet, petunia, tricolor Thistle, cockscomb, calendula. Fourth, seed storage management measures Clearance and disinfection. The rubbish, chemical fertilizers, and pesticides are removed from the warehouse, and tar paper is laid in the warehouse as a moisture barrier. Dilute with 80% dichlorvos and spray. Close the doors and windows for 48 to 72 hours and ventilate for 24 hours. 2. Stacked reasonably. Store in a warehouse about 50 centimeters from the wall and 50 centimeters away from the ground. Do a good job of labeling, indicating its location, quantity, and packaging to prevent mixing. 3. Properly ventilated. Seed breathing produces a lot of heat, and proper ventilation can cool and spread wet. Generally speaking, it is based on the principle that "the weather is closed by snow, the water is dripping into the ice, and opened early in the morning and opened late, and the fog is not open at night". Natural ventilation is the mainstay, supplemented by mechanical ventilation. 4. Diligently check. The warehouse should be inspected in a timely manner and the water content and germination rate of the seeds should be tested after the seeds have passed the summer or winter. Set up temperature and humidity meters at various points in different parts of the warehouse, schedule regular measurements and record well. Ensure a low temperature and low humidity environment to prevent the mildew of seeds or the decrease of germination rate.
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