Rice seedling cultivation techniques

Rice seedlings are a new type of casting technology developed on the basis of floppy disk seedlings. In addition to all the advantages of floppy disks, it also has the incomparable advantages of floppy disks. First, it can reduce costs more effectively without the need for special floppy disks and easy access to materials. Second, it can improve labor efficiency, reduce labor intensity, and make planting more convenient and quicker. It can be picked up and transported in rolls. Thirdly, it can effectively overcome the age limitation imposed by floppy disk breeding, increase the elasticity of ageing, improve the quality of seedlings, and ease the stress level of labor. Sooner or later varieties can be selected in the morning and evening so that the rice yield can be effectively improved. Double-cropping harvest generally yields 100-200 kilograms more than floppy seedlings. Fourth, it can save the seeds and avoid the difficulties of sowing seedlings in floppy disk raising and the problem of inability to sow uniformity. In short, it is a throwing cultivation technique that is easier to operate, more flexible, and has greater potential for yield increase than floppy disk breeding. The key technologies are as follows:

First, the material preparation: Intermittent seedlings thrown 秧 not floppy disk, but to prepare for the material of the compartment, generally use a fresh tough single-layer woven bag or high density, high tenacity, fine hole plastic mesh gauze as a spacer material .

Second, seedbed selection: seedbed should be selected fertile soil, loose air, irrigation and drainage convenience, sheltered sunny, easy to manage, no harm to the vegetable garden or dry land as a seedbed.

Third, seedling preparation, do tricks: seedbed should be 1.5 meters wide, 8-10 meters long standard leveling, do a good job, good base fertilizer, 25-30 kg compound fertilizer per acre, directly applied to the bed The area of ​​seedbeds is generally 1-1.5 times larger than that of floppy disk breeding, that is, 15-20 meters long pods per acre of Daejeon, in order to facilitate the cultivation of many plants and improve the quality of seedlings. After the seedbed is flattened and fertilized, the compartment is placed on the bed flat, and then the mud or pond mud mixed with the strong agent is laid on the compartment and the thickness is 2-3 cm.

4. Seeding: Generally, the control is between 0.75-1 kilograms per acre. The varieties use a hybrid combination of late-maturing, high-yield and high-quality. Early rice should be sown before the temperature stabilizes above 10°C, and late rice should be sown before the beginning of June. . Seeds can be sown in the normal method of seedlings on the seedling bed, early rice mulching, late rice cover straw, sowing can be broadcast first 2/3, and then 1/3 fill empty, and strive to uniform.

V. Putian management: The management of barrier layer seedlings is basically the same with normal Putian management. Early rice pays attention to heat preservation, moisturizing, timely ventilation, and hardening seedlings. Late rice pays attention to high-temperature heat-resistance buds. When a leaf is in one heart, it uses paclobutrazol 50-60 g for water. 45 kilograms of spray promotes tillering, and breeds more dwarf creatures. Due to the restriction of fertility in the barrier layer, early rice can be thrown to 25-30 days of age, and late rice can be thrown to 30-45 days of age.

Sixth, from the cocoon, throwing cockroaches: every layer of seedlings in the first 5-7 days before giving birth to marry fat, sprayed herbs. Send martial medicine with 0.5% potassium dihydrogen phosphate solution plus 26% tricyclazole 500-600 times liquid spray, dry seedbed after spraying can be used to start rubbing. When must hoist the barrier along the entire seedling from or destined field seedling throwing roll, a vaccine can be a vaccine throw throwing time, the tool may be loaded into one a parabolic seedlings after eleven tear. Throwing field should be smooth, sandy field day day throwing whole field, muddy fields day polishing, polishing the first 2/3, then 1/3 up empty, Oda, standing row field thrown on the ridge, a field should be set to 3 m furrow, 30 cm traveling, after throwing into the normal field management.

Precautions:

1. To select a barrier porous material, good toughness, ease of handling.

2. Zhuangyangji must mix uniformly, to control the amount, the amount of bed acre field 2.5-3 kg, not be too thin or too thick layer of mud.

3. When the seedlings from the seedbed moist to slightly dry, to ensure complete whole seedlings, can not be scattered, in order to facilitate transport, Cast Transplanting.

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