Before storing seeds, be sure to select the good seed, store it after grading and tagging. If it is a dry species, in the dormant state in the winter storage period, its respiration has not stopped, do not use plastic bags to store so as not to impede the exchange of air in the pile with the outside air, affect the respiration, reduce the germination rate, and even make the seeds moldy or return. Oil deterioration, so in the storage process, pay attention to the seeds have good ventilation conditions; also should pay attention to the seed itself, safe moisture (moisture content), such as full Yin (wind) after the moisture content is basically the same, such as the core with the Lee, The water content of seeds such as apricot and peach is between 20% and 24% with an average of 22%, while the moisture content of seeds such as jellyfish, apple and pear is between 13% and 16%, with an average of 14.5%. During the winter storage of seed, it is necessary to prevent the seeds from being quenched and heated. The seeds should be stored at a relatively stable temperature, which is basically maintained at 0°C to 8°C. Also note that the humidity in storage should be kept between 50% and 80% for safety. If it is not possible to pick seeds immediately after the species can be damp and take wet sand stratification storage method. Stratified seeds are in the ratio of 1:4 for small grains of river sand and 1:10 for large grains of river sand. The effective temperature is -5°C below room temperature. The maximum temperature does not exceed 17°C, but the optimum temperature is 2°C～7°C, and the relative humidity is 40. %～50%, a layer of seed layer of sand, the first shop wet river sand (hand sand group finger not dripping) and then lay the seeds, the thickness should be uniform, each layer of 5 cm to 6 cm, pile height 1 meter (The uppermost layer is capped with 10 cm sand layer), and can store 60 species of hairy pear, 60 days to 80 days of sea bream, 80 days to 100 days of peach, 150 days to 180 days of sour cherry, 200 days of red in mountain 300 days. Chestnut species wet sand can be stored with 0.05% 2,4-D 500-fold solution in pre-soaked seeds for 3 minutes before storage to inhibit the storage of bad species; chestnut species can also be well-drained in the drainage area (along with drainage ditch) Pengpiao storage.
The fruit tree seeds can also be stored by the snow method, which has the effect of increasing the seed germination potential (rate) and enhancing the cold resistance and disease resistance of the seedlings unearthed. The method is: first soak the seed with warm water for 1 hour to 3 hours, remove and dry it, and mix it with 3 times the amount of seed and mix it in the underground pit. Insert a straw into the hole in the middle of the seed pit and cover it with 30 cm. ~ 50 cm thick snow and ice, and then cover the straw or straw. After 15 days to 20 days before cloth distribution, the seeds are taken out and the mixed snow-fed seed is turned at room temperature. After being thawed, the seeds are removed and mixed, and the mixture is mixed with seed river sand 1:2 to maintain the ambient temperature of 10° C.-15° C. per day. Turn the seeds lightly once or twice to germinate quickly. Hard seeds such as peach, apricot, plum, and red seed can be etched with 60% concentrated sulfuric acid for about 20 minutes. They should be rinsed with flowing water, and then kept in cold water for 2 days to increase the seed germination rate. .