Hybrid early rice is planted with less soaking seeds to promote "small stove"
The problem of dumb (non-germination) rotten buds in the soaking and germination process of hybrid early rice has been plagued by grain farmers. Most of the investigations were caused by improper soaking and germination methods, because many farmers applied traditional soaking and germination methods to hybrid early rice seeds. . The traditional soaking and germination method is to use the heat generated by the self-breathing of the seeds to increase the temperature of the heap and promote the germination of the seeds. Due to the small amount of hybrid early rice, the temperature rise of the grain pile does not reach the requirement of germination, which often leads to low germination rate and many dumb valleys. Eventually, due to excessive germination time, the shell and mold infection are caused, until the rotten buds are bad. Therefore, for the early rice with small amount of early hybrid rice, the seed soaking and germination should be different from the traditional soaking and germination methods to meet the needs of seed germination for temperature, moisture and oxygen. The following 4 methods are available.
1. Warm water three-dip three-dip soaking seed germination method
Prepare the water for soaking in a ratio of 3 kg of water to 2.5 kg of seed, and add 10 g of strong chlorine to the water. Soak the seeds for 18 hours, then rinse with water, then transfer to 3 dip 3 dew. That is, at 7:00 on the first day, the seeds put into the snakeskin bag (that is, the plastic textile bag) are immersed in a bucket (both wooden barrel and metal barrel) containing 50 °C warm water, and the mixture is turned to the water temperature to be lowered. At -38 ° C), the bucket and the seed bag were all wrapped and tied with a multi-layer film, placed in the sheltered area for 12 hours, and the seeds were watered at 7 am on the second day, and the snake skin bag containing the seeds was about to be placed. Put it on the barrel and replace it with new hot water (temperature around 50 °C to provide heat for the above exposed seeds), but be sure to keep a certain distance between the seed bag and the water in the bucket to prevent seed Humidity is too large and oxygen deficiency is bad. The seed bag was then wrapped with the film to keep it warm and exposed for 12 hours. On the second day at 7:00 pm, use 45 °C warm water, and on the third day at 7 pm, switch to 40 °C warm water. Using this method, the rate of breaking the chest of the seedlings is generally more than 90%, and then soaking in warm water of 37-38 ° C for half an hour, draining the water and germination at room temperature, and cultivating after 1 day.
Second, coal ash safe and rapid germination
Combine soaking with germination, choose a clean basket, use disease-free straw to wrap around the basket and bottom of the basket to form a grass nest; use 10 grams of strong chlorine plus 30 °C warm water 5 kg with pharmaceutical liquid soaked 3.5 kg, soaking seeds for disinfection 8-10 hours, then wash and drain with water, prepare for germination; pour the seed into the container with hot water of 55 °C, turn it over and hold for 3-4 minutes, then stir and adjust 2-3 times The seed is preheated in warm water of about 35 ° C for about 1 hour. Then use hot coal ash to mix seedlings, seeding and sifting coal ash (burning without black heart), mix in a ratio of 1:0.8, then mix with ash in boiling water, hand-kneaded into a ball, throw away For the degree, mix the hot seedlings that have been pre-heated and drained with the hot and humid coal ash, put them into the snakeskin bag, and quickly put the snakeskin bags together with the seedlings into the grass nests of the baskets, and gather the straws of the baskets. Insulation, thickened with straw. The seedlings began to break the chest after about 10 hours, and the 24-hour chest breaking rate was over 90%. At this time, flip it once, and turn the seedless valley around the bottom and the bottom without breaking the chest into the center of the grain pile. If the temperature in the grain pile is low, the glass bottle containing hot water can be inserted into the grain pile to increase the temperature; if the shell is relatively dry, it can be sprayed with 30 °C warm water to mix well, continue to pile up the germination, and then sown in 24 hours.
Third, warm water, many rises and falls, soaking seeds, germination
The seeds that have been sterilized by strong chlorine are packed in a snakeskin bag, and the warm water of 45 ° C is poured into a bucket (such as a metal bucket, etc.), and then the seed bag is placed in the water, and the seeds are thoroughly mixed to make the heat evenly maintained. At a water temperature of 38 ° C, the barrel is wrapped with a film and covered with straw insulation. After soaking for 12 hours, the seed bag was raised, and the exposed seed was wrapped with straw. After 6 hours of exposure, the second time was immersed in warm water at 38 ° C for about 6 hours, and then exposed for 6 hours. The third soaking water temperature does not exceed 35 °C. Repeatedly, many times, until the rate of breaking the chest is more than 90%, and then germination according to the conventional method.
Fourth, the germination machine germination
The seeds that will absorb the water will be filled with textile bags, 20 kg per bag, placed on the shelf of the germination machine. The temperature in the thrushing stage is controlled at 30-38 ° C. When the temperature exceeds 38 ° C, the temperature should be lowered. Low is broken. When the rate of breaking the chest is over 95%, it can be sown. If the weather is unfavorable after the chest is cut, the temperature will be controlled at 15-20 °C to control the growth of the buds and roots, so as not to affect the quality of the seeding.
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