The rice seedlings floppy disk dry seedlings are a new type of seedlings that are matched with castor seedlings. The quality of the seedlings directly affects the quality of the seedlings and the level of rice yield. The criteria for throwing rice at the top are: age 28-30 days, leaf age 3.5 pieces, seedling height 10-13 cm, number of single plants 7-10, white root 5-7, and 100-millimeter fresh seed 20 g or so. With a pod rate of more than 30%, the leaves are thick and straight and flexible, and the leaf color is green and disease-free. In order to achieve the above criteria, production must be done: the finer soil preparation bed. The nursery beds or paddy fields with convenient drainage and irrigation, fertile soil are used as seedbeds, and then the soil is ploughed and smashed to make a trampoline with a net width of 1.4 meters and a length of 10 to 15 meters. Nutrient soil nursery. Prepare 15-20 kg of nutritious soil per plate according to the volume of Honda's dumping (25-30 pieces of 561-hole plates per acre of Honda). The formula for nutrient soil is: 70% of fine soil (less sand) in garden or dry field, 30% of sieved manure in high-quality rotting (without turfgrass), and 30 grams of soft rot nutrient added to each plate. To fully mix, there must be a certain humidity, so that the seeds and mix well. Strict seed treatment. Prepare 2 to 2.5 kg of dry rice per acre of Honda, do a good job of drying and seed selection before planting, and soak seeds with Bataan, Soaking Seed Spirit, etc., Carbendazim, Agarin, and prevent dry aphid, evil Seedling disease and seedling blight, bacterial wilt. High standard high quality sowing. According to the length of the growing period of the variety and throwing time, determine the appropriate species. First of all, 50 to 60 kg of prepared screened nutrient soil and 25 to 30 kg of soaked and sterilized wet rice should be mixed 3-4 times, and then loaded into 30 trays. The loading method is: first place the tray on the tray plate (70 centimeters long, 45 centimeters wide, 2 to 3 centimeters thick), and then place the tray. Use a small wooden board to scrape and then put the second set, followed by analogy, the upper and lower plates must be aligned, one set of 15 to 20 plates. The form of the wobble plate can be divided into two types. One is to put an empty plate before sowing, and then place the plate on the bed, but the bed surface is required to be particularly soft, otherwise it is easy to flatten the hole when the platen is pressed. The other is the broadcast after the plate, the trampoline to apply the bottom of the water, the water leveling the bed, to be placed in a muddy state when the plate, the plate should pay attention to two points, first, the plate gently pressed into the mud, The second is that there should be no space between the disk and the disk, and they must be connected to each other. Place a small amount of cover after the sampan plate is placed, flatten it and use a pressure plate (140 cm in length, 40-50 cm in width, and 3-5 cm in thickness) to press the plate. Slow watering after the pressure plate must be poured thoroughly. Spray herbicide, cover film. There are few grass seeds in the nutrient soil, but no chemical weeding, such as more grass seeds, should be completely infiltrated into the bed after the water to spray Le, seed bed spirit and other safer herbicides to close the grass, timely support after spraying Cover film. Strengthen field management. Before the emergence of water to Ningda not small, after sowing in the water on the basis of sowing, watering 2-3 days after sowing, Qimiao before pouring a water, seedlings after the bed surface temperature 1-2 days watering Once, it is advisable to water each time to prevent flooding or long-term accumulation of water. On the basis of the application of strong nutrients, generally do not need to top-dressing, such as seedlings are indeed lack of fertilizer performance, can be applied to a small amount of fertilizer in the two leaves at the heart. After the seedlings have one leaf and one heart, when the temperature in the membrane exceeds 28 degrees, the seedlings shall be ventilated in time. On the basis of seed dressing before sowing, the seedlings were sprayed with metalaxyl and rooting powder to prevent green and damp-blight at the end of one leaf period.

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