First, the selection of Putian and the selection of plastic trays: The nursery beds should be selected from plots or plots with flat terrain, sunny, leeward, and water sources. Each mu of field needs 10 to 15 square meters of seedbed; , Middle seedlings, 434 type large, medium seedlings.
Second, the preparation of Zhuang Qiang agent: Zhuang Zhuang agent is based on the physiological and ecological characteristics of dry rice seedlings of rice, for the prevention of diseases, Zhuang Jian and developed a set of disinfection, acid, fertilizer, efficiency, and control as one of the multifunctional Rice seed bed soil conditioner. There are two kinds on the market at present, one kind is the powder (has used in large quantities now). The other is a suspension agent, called Zhuang Zhuang II, which can be directly used for seed dressing to prevent bastard disease in addition to the characteristics of powder.
Third, the preparation of soil: Select a strong viscous fertile dry land or paddy soil, can not use coal ash or sand, soil can not refer to the fine manure in order to avoid the formation of scattered seedlings. Prepare about 3 kg per plate before sowing, then mix and plate with every 100 kg of soil and 0.75 kg of strong scorpion agent; or shake vigorously with strong agent II, treat 150 ml per bottle to treat bud seed 5 The proportion of kilograms was added and the seeds were evenly dressed. The seeds were planted the night before. The seeds were sown 10 hours later. With stimulant II, no seed treatment agent was used anymore.
IV. Seed treatment: The seeds should be sun-dried and water-floated prior to sowing. The first method is to dip seeds with 50% carbendazim or 50% thiophanate-methyl or 50% thiram 500 times for 48 hours (by 200 grams) After the liquid is mixed with 100 kg of water, 60 to 70 kg of rice will be soaked and then soaked and sowed. It is better for preventing bakanae disease and can be used for both rice blast, rice leaf spot, and rice seedlings. Disease, etc.; Method 2 is to use Zhuang Zhuang II.
Fifth, the rationale: According to the 1.8 to 2 meters off the assembly line, in which the width of 1.3 to 1.4 meters, width 0.5 to 0.6 meters wide, engage in low-lying high-pitched type, surface depression about 10 centimeters, so that the surface smooth .
Sixth, sowing date: According to the swinging date to determine the seedling date, the sowing date is generally 35 days.
7. Seeding rate: 60-70 grams of conventional rice for each plate, about 30 grams of hybrid rice, 3 to 4 grains per hole for conventional rice, and 2 to 3 grains of hybrid rice.
VIII. Packing and sowing: sowing should be selected on a sunny morning without wind, the first two platoons should be placed on the surface of the bottom of the pouring water, and the soil with the strong agent will be mixed with a sieve. After sieving to a depth of 2/3 of the plate, the seeds of the buds were placed in the holes, and then the soil containing the strong agent was screened on the plate with a sieve, and the cover soil was no more than 1.5 cm above the plate surface.
Nine, control of weeds: to manually remove weeds, to prevent and control, to kill 0.3 grams per square meter with Dandan, watered 0.1 kg spray.
X. Cover film: Before covering the film, first use the loose hair or wheat straw to cover the seedling tray, support it, and drench the water, then cover the membrane.
XI. Field management at the seedling stage: First, temperature management. First, after the sowing, it is the sealing period before the current needle, and the heat preservation and moisturizing are the main factors; secondly, after the green seedlings turn green, small ventilation is carried out, the water is strictly controlled, the root growth is promoted, the sunrise ventilation is encouraged, and the closure is made before sunset; After the seedlings have grown, the amount of ventilation is increased. After 4 to 5 days of hardening, the film is peeled open, picking up supports such as loose hair or wheat straw, and then using a bamboo stick or bamboo to set the film to about 40 cm. After the small sheds were covered with membranes, they were air-cleared from 10 o'clock in the morning to 5 o'clock in the morning. After being managed for one week, the film can be peeled off during the day for outdoor management. When there is frost at night, the film should be covered to prevent frost. When the seedlings grow to about 15 centimeters, they can be placed. The second is moisture management. Seedlings should not be watered until they are ventilated. After ventilation or removing the film, if the seedling tips no matter if the bead or bed soil is dry in the morning or evening, or when the leaves are curled, the water should be replenished in time. Select water spray in the evening or in the morning, and use water every time. The third is topdressing. Seedling period generally do not follow fertilizer, in order to apply Miao Fei, per square meter with 4 ~ 6 grams of urea water pouring (a bucket of water against a small amount of urea), must be used after the application of water dripping.