First, the dipping seeds should be kept: the corn must be soaked before germination. The specific method of soaking seeds is to exchange half of the boiling water and the cold water, and use a small tank, a large basin or other utensils to hold the water, and then choose Good seeds should be put into the water surface to exceed 20 to 25 centimeters of seeds . At the same time, stir with a wooden stick to make the seeds evenly heated. The temperature of the water should be controlled at 25 ~ 28 °C, so that the seeds are soaked for 2 to 3 hours. When the seeds absorb water and swell, they should be immediately removed for germination treatment.
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Two aspects should be paid attention to during soaking: First, the soaking time should not be too long, so as to avoid causing the seeds to be hypoxic and respiration, and reduce the vitality of the seeds. Second, pay attention to the water temperature and water volume, so that the seeds can quickly absorb and swell to ensure the quality of soaking seeds. .
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Second, put the germination off: the most suitable temperature for corn germination is about 25 °C, the specific germination method is: remove the soaked seeds and control the water, put it in the tile basin or in the mat, covered with Wet cloth or wet grass bag pieces, then placed on a hot pot for germination. The temperature inside the seed pile should be kept at about 20 °C. Check the temperature of the seeds every 3 to 4 hours, and turn up and down once to adjust the air temperature. When the temperature is too high or too low, always move the place to adjust the temperature. When the seeds are 40 to 50% , the buds are sown. Then wash the seeds without germination with warm water and continue the germination. After two or three repetitions, the seeds that can germinate can basically be budded.
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At the time of germination, two problems should be paid attention to: First, after seed germination, it is necessary to sow in time. If it cannot be sown, the germinated seeds can be placed at 2 to 4 °C to control the growth of seed buds, but the time is not Too long; the second is to pay attention to the temperature of germination, it is best to do a small amount of seed test first, and then formally carry out germination after obtaining experience, so as not to cause undue loss.
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Third, to live in the sowing: corn soaking, germination and sowing all links, must be closely connected, not out of touch. When germination is sown, attention should be paid: First, picking buds and sowing seeds, and selecting seeds that have just been twisted and white, remove the seeds that have been germinated for too long, yellowish and earned at both ends to ensure that the buds are planted under the buds. The second is to make timely sowing, the seeds of germination should not be planted too early, because the low temperature of premature sowing will delay the time of seedling emergence, uneven seedlings, and increase weak seedlings. Generally, the local temperature is stable at around 10 °C. favorable.
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Source: China Agricultural Promotion Network
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