Winter storage and management of corn seed
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2. Pay attention to improve seed quality. If seeds contain more immature or broken seeds, and Other large amounts of dust and other impurities will have adverse consequences for the safe storage of seeds. During storage, we must pay attention to maintaining the purity and purity of the seeds. degree.
3. Strictly control the temperature, such as seed moisture content to achieve safe moisture requirements, seed maturity is good, is able to endure the minimum temperature for its long-term invasion, such seeds can be stored for a long time in a dry cold storage, without affecting their germination ability . If the moisture content of corn seeds is above 14%, effective management measures should be taken. Such seeds should be stored in the environment with temperatures above zero and be planted until the following year. The temperature should not be lower than zero. Below zero degrees, seeds may be chilled, lose their ability to germinate, or reduce their ability to germinate.
4, maintain good ventilation, to achieve no leakage, no moisture under the corn seed has a significant moisture absorption, even if the dry seed, encounter rain, snow cover or smoke fumigation, there will be anti-tide phenomenon, also It will reduce the germination rate of corn seeds. Therefore, do not pile up on the ground. It must be damp-proof. Use sacks or other containers with seeds to remove wood from above the ground by more than 50 cm. The interior should be kept dry and well ventilated, even if the seeds are often in a dry state. Perform artificial wind. Keep seeds on the outside and cover them with a cover to prevent snow cover.
5. It is forbidden to use plastic bags to pack seeds. Because the plastic bags are airtight, the seeds will be isolated from the air, and the seeds will not be able to breathe. At the same time, the carbon monoxide exhaled by the seeds will not be able to be discharged. For a long time, the carbon dioxide in the bags will accumulate too much. Carbon dioxide poisoning; In addition, the seeds themselves and the respiration of heat generated by the heat does not spread out, causing the seeds to heat and mildew.
6. Do not mix seeds with pesticides and nitrogen fertilizers. Some people have convenient plans. They will put together the purchased corn seeds, pesticides, and nitrogen fertilizers. Some of them even put seeds directly on pesticides or fertilizers. It is very unscientific. Some pesticides have a toxic effect on seeds. Long-term seed and pesticide combination will not only affect the seed germination rate, but also cause physiological changes in corn seed. The hybrids planted in the following year may also appear abnormal. Nitrogen fertilizers Ammonium nitrogen, which is volatile, emits very strong ammonia. When the ammonia concentration is high, the embryo will be killed and the seeds will lose their vitality.
7. Regularly check the seed storage period According to different seasons, regularly check the preservation method, moisture content, temperature, germination rate, etc., and focus on three aspects: First, check whether the seeds are moist; Second, check if the seeds are pests.蛀 é¼ é¼ é¼ , rat bites; third is to regularly check the seed germination rate and germination potential. Due to the long winter storage time of the seeds, during the entire seed storage process, the water content of the seed itself may be greatly affected by the temperature and humidity of the air. Regular inspections are essential.