Rice non-woven fabric ecological dry breeding machine transplanting technology

The core of the technology is nutrient soil with biogas residue, seed soaking and spraying with biogas slurry, and non-woven cloth covering, which is suitable for cultivating machine-transplanted seedlings with leaf ages of 3.5-5.0 leaves. The technical points are as follows: 　　◆ Seedbed selection Choose fertile and loose vegetable gardens with convenient irrigation and drainage, leeward wind, and convenient seedling transportation or cultivated and matured dry land as seedbeds. Transplanting fields in acres have 6-8 square meters of seedbeds. The net width of the box surface is 1.4-1.5 meters, the height of the box ridge is 0.1 meters, the surface of the box is flat, the height is consistent, there is no depression, no debris, the drainage ditch is arranged around the seedling bed, the seedling bed is flat, solid, straight and light, pay attention to the bed soil adjustment acid.　　◆Biomass residue fertilizing seedbed and nutrient soil 　　 About 25 days before sowing, 15-25 kg of biogas residue and 250g of superphosphate per square meter of seedbed are applied, and then the fertilized bed soil is covered with a film. At the same time, according to the transplanted acres, use 40-50 kg of fine fertile soil, 20-30 kg of biogas residue, 1 kg of urea, 1.5 kg of superphosphate, 0.2 kg of potassium sulfate and appropriate amount of biogas slurry, and mix well, and pile the membrane to ferment the retort. Nutrient soil and mulching soil for seed bed. ◆Level the seedbed, put the nutritious soil in a tray, and flatten the surface of the seedbed before sowing. Fill with plantar water (to the degree of pulping). After smoothing the bed soil, place the seedling tray on the seedbed (select 580 × 280 × 30 mm 3 machine-plug special plastic floppy disk (16-20 pieces), evenly spread nutrient soil in the disk, the thickness of the soil layer is 2 cm. ◆Apply strong seedling agent, pour the sole water acre with 0.3 kg dry seedling type strong seedling agent and 15-20 kg nutrient soil, mix it evenly, spread it evenly on the nutrient soil of the seedling pan, pour the sole water, smooth the surface of the pan, and make The soil moisture in the seedling tray is saturated, and multiple technical links such as bed soil disinfection, acid adjustment, fertilization, and chemical control of strong seedlings are completed at one time. ◆For soaking seeds with biogas slurry, select hybrid rice varieties with good quality, high yield, stable yield and good resistance. The amount of seed for transplanting in a mu field is 1 kg; after sun-dried and selected seeds, use the middle layer biogas slurry to mix 1:1 with water before sowing. Or soak the seeds in the original solution for 36 hours. After the soaking is completed, immediately remove the rice seeds and rinse them with water to drain off the excess water. ◆Precise sowing, covering with non-woven cloth, sowing 70-80 grams of rice seeds (wet rice) per seedling tray, sowing finely and evenly, and cover nutrient soil after sowing (do not use strong seedling agent to mix nutrient soil) 0.5 About centimeters, without seeds. After sowing, spread a layer of ultra-micro film on the seedling tray, and then set up a small arch shed to cover the non-woven fabric, press tightly and compact the surroundings to facilitate heat preservation and moisturization.　　◆Seedling stage management　　Temperature management: The flat film is removed immediately after the seedlings are needled, the non-woven fabric is sealed in front of 2 leaves and 1 heart, and the non-woven fabric is gradually removed according to the weather conditions.　　 Humidity management: From sowing to emergence, keep the bed soil moist to improve the seedlings. Seedlings emerge to 2 leaves and 1 heart, generally do not water, if the bottom water is not thoroughly watered, water on the cloth appropriately; 2 leaves, 1 heart to 3 leaves, 1 heart, water the seedlings in time, keep the bed soil moist, prevent greening Blight; after 3 leaves and 1 heart, control water to promote roots, keep the soil moist, not dry and whitish, and the seedlings do not roll leaves at noon on a sunny day. Control the wet seedlings 3-5 days before transplanting, promote the packing of the seedlings, increase the pulling force of the seedling blocks, and facilitate the rolling and machine transplanting of the seedlings.　　 Disease control: focus on the prevention and treatment of blast disease and rice blast. For 1 leaf and 1 heart, use 2.0 g of 70% dixon WP per square meter and 1.0 kg of water to spray to prevent wilt disease. Spray a small amount of water immediately after spraying to prevent phytotoxicity; 2~3 days before planting, use Spray seedlings with 20% tricyclazole 750 times solution to prevent rice blast.　　 Biogas slurry top dressing: Spray seedlings with biogas slurry or mix with water at a ratio of 1:1 twice (1 leaf with 1 core, 3 leaves with 1 core). The biogas slurry should be filtered with the middle layer of biogas slurry and then sprayed with seedlings.