1, drying seeds. Before soaking rice seed, it is necessary to select good weather for 2-3 days so as to improve the germination potential and germination rate of rice seeds. But be careful not to spread rice seeds on the cement floor or slate to prevent sunburn. During the drying process, pay attention to turning.
2, salt water selection. When selecting seeds, the specific gravity of brine should reach 1.13 (25? water, dissolve 5? salt). After the salt water is selected, it must be washed twice with clear water, otherwise the seeds will not sprout.
3, seed disinfection and soaking. The selected seeds were diluted with 25% scopolamine (10 mg) in a bag (10 mg) and weighed 50 kg and soaked in 40 kg of water. The water temperature was maintained at 11-12°C and soaking and disinfection was performed for 6-7 days. Pay attention to soaking, the water should be more than 10% higher than the rice seed, the accumulated temperature should reach 100 degrees, turning once a day.
4, germination. Remove the soaked seeds and use a gauze bag to germinate. After the rice seeds are warmed, the temperature is controlled at 30-32°C, and the temperature is too high to turn over. The temperature after dew-breaking is controlled at 25°C. When germinating, pay attention to the changes of rice seed temperature at any time, appropriate temperature and germination, and the bud root length should be within 2 mm. It is advisable to dry the bud in the cool place after sowing and wait for sowing.
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