Correctly Grasp the Technique of Seed Soaking and Emergence of Late Rice to Improve the Germination Rate

Correctly Grasp the Technique of Seed Soaking and Emergence of Late Rice to Improve the Germination Rate

There are several major qualities of the seed, such as seed germination rate, seed purity, seed clarity, seed weight, and so on, which are the four major elements of seed quality. Seed quality inspection is an important step in agricultural production. Seeds are the foundation. Without good seed quality, there is no excellent plant body. Therefore, the step of doing a good job in the inspection of seed quality is the cornerstone of modern agriculture. In the inspection of seed quality, the seed germination box, the seed counting instrument, the seed cleanness table, and the vacuum grain seeding instrument are all quality inspection equipment. The precise seed germination box is an instrument that is essential for seed germination tests because it provides parameters such as temperature, humidity, light intensity, and illumination time required for seed germination. Here we mainly discuss how seed soaking and germination can increase seed germination.

Sun-seed: soaked seeds before sun germination of seeds, and continue to turn seed, in order to enhance seed coat permeability, enhance enzyme activity, there is to increase the germination rate and germination potential. Sowing or soaking can also reduce the germination inhibitory substances in the seeds and promote early germination. At the same time, the drying of the seeds can not only kill bacteria, but also make the seeds dry to the same extent, eliminate the difference in water content between the seeds. After sowing, seeds are absorbed uniformly after soaking, and the seeds germinate neatly when germinating. Soaking: The purpose of soaking seeds is mainly to meet the requirements of rice germination on moisture, so that all seeds evenly suck enough water to germinate quickly and neatly when germinating. The degree of saturation of the seed water absorption is equivalent to about 25% (籼) and 30% (粳) of the seed weight. The time required to reach this moisture content for soaking is not the same as the water temperature. When the water temperature is 30°C, it takes about 35 hours, when the water temperature is 20°C, it takes about 60 hours or more, and when it is 10°C, it takes more than 80 hours. According to the temperature during late rice planting in Pinghu City, the temperature is generally about 48 hours. Germination temperature: The lowest temperature at which rice seeds germinate is generally 10 to 12°C. In this range, the temperature required for indica rice germination is high and the japonica rice is low. The optimum temperature for the germination of rice seeds is 28-32°C, and the maximum temperature is about 40°C. When the temperature was as high as 42°C for a long time, the cytoplasm of the seed buds stopped flowing and the buds burned. Oxygen deficiency during germination: According to the survey results, first, the farmers did not stir the seeds during the soaking process, causing a layer of film on the surface of the water in the cylinder, which affected the normal breathing of the seeds. Second, most of the farmers used to use air permeability. Poor germination of the woven bag causes insufficient oxygen to germinate the seeds and affect the germination rate.