1. Seed selection: Select seeds according to the characteristics of the plot, and be sure to choose seeds promoted by the state. The seeds should have a smooth and shiny appearance, no small particles, and a brief description of the origin and quality and yield.
2. Germination method of seeds: Soak the seeds in warm water at 20-30℃ for 3-4 hours, then wash them once with warm water, pack them in woven bags, put them on a hot kang, and store them at kang temperature. It is suitable to keep it at 15℃, and cover it with clothes or the like to keep it warm. Wash with warm water every 3 hours. All roots and buds will appear in about 24 hours and all buds will appear in 36 hours. When the seedlings have just broken through the seed coat and 5% of the seedlings are exposed, put it in a well-ventilated and sunny place and spread it into a thin layer. Turn it frequently. If the roots and buds are dead, remove the dead buds and mix them with coating. The seeds can be sown.
3. Water planting in Sanlichuan: The first plow in Sanlichuan goes deep into the original ridges and furrows, applying nitrogen and potassium fertilizer deeply to the bottom layer, and phosphorus fertilizer to the upper layer. The second plow breaks the original ridge deeply and takes hold of the new ridge. After 4 hours, press the roller to maintain moisture in preparation for the third plow for sowing. The third plow first rakes the ridge platform, pours enough water, and manually points the germinated seeds. Then cover the soil with a thickness of less than 4 cm. After 6 hours, use a compactor to compact it to maintain moisture.
4. Chemical weeding: Chemical weeding should be carried out 3 days after sowing. Use 3-3.5 kilograms of atrazine mixed with 400-500 kilograms of water per hectare and spray. In dry weather, spray Spray clean water once every two days, and wet the ground to a finger depth to improve the weed-killing function.
5. Prevention and control of seedling diseases: Seedling diseases rarely occur in sorghum. White spot disease will occur in special years. Once found, use 0.075 kg of zinc sulfate and 0.05 kg of urea per mu of land mixed with 15 kg of water. deal with.
6. Timely fix the seedlings, shovel them, and timely topdress: In chemically weeded plots, the seedlings must be fixed when they have 4 true leaves. For manual weeding, the three true leaves of the seedlings should be combined with the shovel to set the seedlings. Pay attention to insect pests when planting seedlings, and use methamidophos to kill them immediately if found. After all the seedlings have emerged, use a small spat to go deep once. The deeper the better. After the seedlings are established, use the medium pot once. It is necessary to apply two shovels three times or two shovels four times, combined with sealing the large ridges and applying fertilizer once, and apply 200 kilograms of diammonium phosphate per hectare.