Cultivation techniques of raising Rice Seedling in interlayer and throwing Seedling

Rice interlayer seedling raising and seedling throwing is a new seedling throwing technique developed on the basis of soft disk seedling raising and seedling throwing. In addition to all the advantages of floppy disk seedling raising and seedling throwing, it also has incomparable advantages: first, it can reduce the cost more effectively, without special floppy disk, and the material is easy to obtain. Second, it can improve labor efficiency, reduce labor intensity, sowing is more convenient and faster, and the whole seedling can be pulled up and transported in a reel. Third, it can effectively overcome the limitation of seedling age caused by raising seedlings with floppy disk, increase the elasticity of seedling age, improve the quality of seedlings, and alleviate the degree of labor tension. late-maturing varieties can be selected in the morning and evening, so as to effectively increase the yield of rice per unit area and achieve a bumper harvest in double crops. generally, the yield is 100 and 200 kg higher than that of raising seedlings and throwing seedlings on a floppy disk. Fourth, it can save seeds and avoid the problem of difficult sowing and unable to sow evenly in floppy disk seedling raising. In a word, it is a seedling throwing cultivation technique which is easier to operate, more flexible and has greater potential to increase production than raising seedlings with floppy disk. The key techniques are as follows: first, material preparation: do not use floppy disk for raising and throwing seedlings in interlayer, but prepare materials for interlayer, generally using single-layer woven bag with good fresh toughness or plastic mesh gauze with high density, high toughness and fine hole as interlayer material. Second, nursery bed selection: nursery bed should choose vegetable garden or dry land with fertile soil, loose ventilation, convenient drainage and irrigation, shelter from wind and sun, easy to manage and rodent-free as seedbed. 3. Nursery bed ground preparation and bed preparation: the seedbed should be leveled according to the standard of 1.5 meters wide and 10 meters long, make the bed well, apply base fertilizer, and apply 30 kilograms compound fertilizer per mu directly on the bed surface. The area of the seedling bed is generally 1.5 times larger than that of raising seedlings on a soft disk, that is, every 667 square meters of field is equipped with a border of 20 meters long, in order to cultivate more tillers and strong seedlings and improve the quality of seedlings. After the seedbed is leveled and fertilized, the compartment is laid flat on the surface of the bed, and then the mud or pond mud mixed with seedling strengthening agent is laid on the compartment, with a thickness of 2mi 3cm. After it is done, the seeds can be sown. 4. Sowing: generally, the amount of seed used in each mu of field is controlled at 0.75 ℃ / mu, and the varieties are selected as late-maturing, high-yield and high-quality hybrid combinations. Early rice is sown as early as possible when the temperature is stable above 10 Mu, and late rice is sown before the first ten days of June. The seeds can be sowed on the nursery bed after accelerating germination according to the normal method. Early rice is covered with plastic film and late rice is covered with straw. When sowing, you can sow 2cm 3 first, and then fill the void with 1mp 3 to strive for uniformity. Fifth, seedling field management: the management of interlayer seedling raising is basically the same as normal seedling field management. early rice should pay attention to heat preservation, moisturizing and timely ventilation, late rice should pay attention to preventing high temperature sprouting, and 45 kg of water should be sprayed with paclobutrazol 50 murine 60 grams per mu in one leaf to promote tillering and cultivate multi-tiller short and strong seedlings. As the interlayer seedling raising is not limited by fertility, early rice can be extended to 25 Murray for 30 days, and late rice can be extended to 30 for 45 days. 6. Raising and throwing seedlings: raising seedlings in the interlayer should be given fertilizer and medicine 7 days before raising seedlings. The marriage medicine is sprayed with 0.5% potassium dihydrogen phosphate solution plus 26% tricyclazole 500 murmur600 times liquid, and the seedlings can be raised after the spray is exposed to the dry seedling bed. When raising seedlings, you must pull up the whole sheet or reel along the interlayer and transport it to the field to throw the plant. when throwing, you can throw one seedling at a time, or you can tear the seedlings apart and put them into a handful of tools. The seedling throwing field should be leveled, and the sandy field should be thrown on the same day, and the mud field should be thrown the other day, first 2 stroke 3, and then 1 stroke 3 should be used to fill the void. Small fields and fields should be thrown on the ridge, and the field should be thrown in a row of 3 meters and 30 centimeters, and enter the normal field management after throwing. Note: 1, the interlayer should choose fine porous materials with good toughness in order to facilitate operation. 2. The seedling strengthening agent must be mixed evenly and the dosage should be controlled. The bed dosage of each mu of field should be 2.5ml / mu, and the mud layer should not be too thin or too thick. 3. When raising seedlings, the seedling bed should be moist and slightly dry to ensure the integrity of the whole seedling and not to scatter, so as to facilitate transportation and planting.