Rice seeds can be stored outdoors for 3 years. According to Chapter 4 of "Measures for Storage Management of Grains and Oil", Article 20 of the Storage Management of Grains and Oil stipulates that under conventional storage conditions, the normal storage time cereals and oil is generally 5 years for wheat, 3 years for rice and corn, and 2 years for edible oils and beans.
Under normal storage conditions, the vitality of rice is very strong in the first year and breathes vigorously. After a year, it gradually weakens and changes little, and the storage stability increases accordingly. Thus, after one year of storage, the conservation properties of rice are relatively stable.
Rice seed storage methods:
1. Do not store in sealed containers
Many farmers use airtight containers tels only sealed glass tubes and sealed ziplock bags. By storing seeds, in a hypoxic environment, the seeds will undergo anaerobic respiration and produce alcohol, organic acids and other substances, which will cause the seed embryos to die and prevent normal germination. It is recommended when storing seeds to leave gaps or holes in the container or ziplock bag for ventilation.
2. Do not place it in a high temperature environment
If the temperature is too high, the respiration of the seeds will be strong and the nutrients stored in it will be consumed. , thereby reducing the rate of seed germination. It is recommended to place seeds away from fire sources, air conditioning outlets and direct sunlight.
3. Do not place it in a humid environment
A humid environment and rain will cause the water content of the product to be too high.s seeds, which will also cause heavy respiration and the seeds will easily become moldy and rotten. It is recommended to place it in a dry place, away from water sources.
4. Do not place it in a smoky environment
If the seeds are fumigated by smoke for a long time, the activity of the seeds will be reduced and the germination rate of the seeds will be affected. It is recommended to store it away from places with oil fumes such as kitchens.
5. Do not store them with pesticides and chemical fertilizers
Since many pesticides and chemical fertilizers are very volatile, if mixed and stored, the volatile gases will easily contaminate the rice species, harming to the seed embryo. It is recommended to store rice seeds separately.
6. Prevent rats and insects from eating them
Put the seeds at home and start sowing and growingplants around May of the following year. If they are not stored properly during these five months, they can be eaten by insects. Ants or mice stealing food not only cause direct losses, but can also contaminate seeds and reduce the germination rate. It is recommended to place it in a place where insects, ants and mice are not likely to breed, and to check the storage situation frequently.
During the storage period, the sum of the percentage of relative humidity of the air in the storage room plus the temperature (Fahrenheit) should not be greater than 100, otherwise l The storage effect will be affected. . Seeds of onions, cauliflower, carrots, lettuce, tomatoes, eggplants and other vegetables can be safely stored at a temperature of 20% (66 T) and relative humidity of air by 50%. When the red bean seedsges are kept at 17 ℃ (62.6 F) and the relative humidity of the air is 35%, the viability of the seeds will remain unchanged within 4 years. When the temperature is 5°C and the relative humidity of the air is 45-50%, many seeds can be stored for 10 years or more. If it can be lowered againLow temperatures and relative humidity of the air can further improve the effect of seed preservation.
Maintaining seed vitality is also closely related to the moisture content of the seeds themselves. Reducing moisture content can extend seed life. According to research, for every 1% drop in seed moisture content and 5.6°C drop in temperature, seed lifespan can be doubled.
Of course, different varieties of seeds of the same vegetable will react differently to storage conditions.
Based on the above principles, there areMany ways to efficiently store vegetable seeds (or other crop seeds). Currently, low temperature drying storage methods or low temperature sealed storage methods are mainly used internationally. The first is mainly used to make seeds dried at low temperatures. Storage is used to store seeds. The second is a sealed container such as metallic glass. The seeds are vacuum canned and stored at low temperatures. According to experiments, vegetable seeds with low moisture content will still have high viability after being stored at -4°C for 20 years. Low-moisture edamame seeds were stored in airtight containers at 2°C. After 10 years, their viability was almost not reduced.
In addition, the “original seeds” of self-incompatible lines of Chinese cabbage and cabbage can be preserved fromyears of silica gel dryers for more than 10 years at 4-5°C.