Machine inserted rice dry nursery technology and operation process

First, nursery preparation:

(1) Nutritional soil preparation:

1. Fine soil dosage: 0.13m3 of sifted fine soil per acre of field is used for nutrient soil and covering soil.

2, bed soil collection: suitable for bed soil is vegetable field soil, dry valley soil and autumn tillage, winter turn, spring rice paddy soil. It should be noted that the soil to which the herbicide has been applied should not be used as the bed soil. Before the rainy season begins, the fine soil should be collected in place and sieved with a 88mm steel wire mesh for storage.

3, the preparation of nutrient soil: before the fall of the valley, according to the cubic meters of fine soil mixed with 5kg of nutrient soil, the nutrient soil should be evenly mixed, prepared by 1m3 nutrient soil per pond. Note: There is no special requirement for the moisture content of the nutrient soil, and it is convenient to operate.

(2) Preparation of porous bottom film:

1. Agricultural film dosage: According to the field of each mu, the agricultural film with a width of 1.4m and a length of 4.2m is prepared.

2, agricultural film thickness: the thickness of the selected agricultural film should be appropriate, too thick, the cost is higher, the book is easy to break, leading to the roots under the roots.

3. Punching of agricultural film: The agricultural film required for 50 mu of field is wound on a wooden board with a length of 2 m and a width of 0.3 to 0.4 m and a thickness of 0.02 to 0.05 m, and then punched with a belt punch with a diameter of ¢3 mm. hole. The hole spacing on the agricultural film was 34 cm. The hole spacing should not be less than 3cm, otherwise the hole is too dense, the root is easy to lay down, the seedling packing is not good; the hole spacing can't be more than 5cm, otherwise the hole is too thin, which is unfavorable to exchange water and gas under the film.

(3) Preparing for Putian:

1. The area of ​​Dianchi Lake: According to the ratio of Dianchi Lake to Daejeon, 1:100 is reserved for Ikeda.

2, 秧畦 specifications: 1 秧畦 width 1.4m. 2 The width of the trench is 0.25m, and the depth of the trench is 0.15m. 3 The width of the ditch around the 秧田埂 is 0.3m, and the ditch depth is 0.2m.

3, Putian selection: Select the convenient irrigation and drainage, close to the water source, convenient transportation of the field for the pond, the area of ​​each pond is between 0.5 ~ 1 mu.

4, Dianchi Tianneng whole: 1 winter ploughing and freezing. 2 15 days before the fall of the valley, plowing the fields, ditching the water to make the board, then letting the water dry, the seesaw should reach “light, level, solid, straight”. When the valley falls, the seesaw can stand, and there is no sinking footprint. .

(4) Seed preparation:

The amount of seed used for measurement: according to the basic seedlings required by the rice transplanting machine, the effects of 1000-grain weight, germination rate, germination potential and machine insertion survival rate of integrated rice, and some reserve seedlings are reserved, and each acre field should be prepared. The selected seeds are 4kg.

Before soaking seeds, seeding, sieving, wind selection and specific gravity should be selected to ensure seed quality.

(5) Preparation of other materials required for breeding:

1. Fertilizer: Fine soil fertility is prepared with drought and green, and is prepared at 5kg per cubic meter.

2. Pesticides:

1 Soaking the seed preparation, for example, prepare 1 bag (2 ml) of 100 kg of 3 kg seeds, and prepare 9 μg of imidacloprid in 1 bag of 5 kg seeds.

2 bed soil disinfectant such as dixon is prepared according to 1kg per acre pond.

3 earthworms such as grams? A is prepared at 0.3kg per acre.

3. Wood slats: 6 to 8 wooden slats with a width of 4 cm, a thickness of 1.7 to 1.8 cm, and a length of 3 m or more. The more the better, the better, the width of 10 cm, the thickness of 3 cm, and the length of 1.5 m. .

4. Reed pole: Put a 1.3m long reed rod every 30cm according to the length of the raft.

5, covering the agricultural film: each acre of field spring hoe is 2m wide, wheat glutinous rice is 1.5m wide, and the length is 4.2m to prepare the film.

6, cutting knives preparation: each breeding point in the slack should be done according to the specified size of a long cutting knives, a short cut knives, cut knives.

7. Straw: According to the area of ​​the pond, it is advisable to cover it.

Second, precision seeding:

(1) Reasonable arrangement of the sowing date:

The sowing date should be determined according to factors such as the time before the hoeing of the hoe and the need to sink for 1 to 2 days after the ploughing of the field and the daily operation of the rice transplanter. The age at the time of transplanting is generally not more than 28 days.

(2) Determination of seeding density:

The higher the seeding density, the lower the leakage rate, but with the increase of seedling age, the quality of seedlings is weak, and the elasticity of suitable seedlings is small. The smaller the seeding density, the easier the cavity rate is, and the seedling quality is good. The age of the machine is very flexible, and if it is too thin, it cannot guarantee the basic number of acres. The seeding density is related to the basic seedlings of rice, the 1000-grain weight of seeds, the germination rate, the germination potential, the survival rate of the machine, the plant spacing of the transplanting machine and the selection of the amount of the seedlings. According to the years of experimental demonstration, the conventional japonica rice, such as Wuyujing No. 3, The seeding density of Nanzhao 41 and other varieties is about 0.75kg/m2.

(3) Soaking seeds and germination:

1. Soaking seeds: use pesticides such as 100g and imidacloprid soaked in water, soaked in japonica for 80 days? Degree, dosage of the drug is applied as specified in the instruction manual.

2, germination: germination can be carried out by conventional methods, germination should be completed within 2 days, reminded to break the chest when the white can fall.

(4) Falling valley operation steps:

1. How do you apply a pesticide such as gram? A.

2, the bottom film is laid.

3. The 1.7cm thick wooden slats are embedded on both sides of the enamel surface, and the distance between the wooden slats on both sides of the enamel surface is 1.3m.

4. Lay the nutrient soil that has been fertilized.

5. Scrape the nutrient soil with a moldboard.

6. After flooding the nutrient soil with water pump, drain the water.

7. Spray the nutrient soil disinfection agent, Dixon.

8. The buds are over-scaled, evenly distributed to each scorpion and evenly dropped. Each scorpion is broadcasted at least three times.

9. Covering soil: Covering with unfertilized fine soil, the thickness of the covering soil is about 0.3cm, and it is better to see the seeds.

10. Place a reed rod horizontally every 30cm on the surface.

11. Sealing film: The film should be tightly sealed and sealed tightly. After sealing, if it is rainy, it should remove the water on the film in time to prevent stagnation and hot seedlings.

12, cover grass: In order to prevent high temperature burning seedlings, the temperature inside the film should be controlled below 35 ° C, the film should be covered with straw, the thickness of the cover grass is suitable for the sunburn on the film.

(5) Uncovering the film:

After 3 to 4 days of sowing, the film was uncovered after the seedlings were observed. On a sunny day, the film is uncovered in the evening, and the film can be uncovered in the morning on a cloudy day. The rain should be peeled off after the rain. After the film is removed, the last time, the water is drained and the seedlings are managed.

Third, seedling management:

1. Water pipe measures: After the film is uncovered, the water is drained and dried, and the dry cultivation is carried out. The irrigation is not flooded, the field does not retain water, the quality of the seedlings is improved, and the root system is promoted. The principle of water spray: as long as the noodles are not whitish, the seedlings do not sprinkle water. 3 to 4 days before transplanting, spray enough water to facilitate the transplanting of the seedlings. And control the water to refine the seedlings, enhance the plate's clamping force, in case of high temperature, it can be sprinkled with water to make up the humidity. In case of heavy rain, it is necessary to cover the rain with agricultural film to prevent the moisture content of the clam block from being too large, which is unfavorable for transplanting.

2. Fertilizer control method: After fine soil fertility with drought and flood green, under normal circumstances, in addition to the marrying fertilizer, the seedling stage may not be fertilized. Specifically, fertilization should be carried out according to the condition of the seedlings. If fertilization is required, a small amount of urea should be sprayed or poured in one leaf and one heart. The grafting fertilizer should be sprayed with spray water 3 to 4 days before transplanting, and the amount of urea used is 1 to 4 kg. Increase without authorization. After the application of the marrying fertilizer, it should be inserted within the predetermined time, otherwise it will easily cause the seedlings to grow up. If the seedlings grow too fast, 15% of paclobutrazol can be sprayed per acre at 60-80 grams per acre.

3, pest control: the main pests and diseases in the field are gray planthoppers, rice horses, sheath blight, nursery disease, etc., especially to focus on the control of gray planthopper, in order to prevent infection with striped leaf blight virus. After the seedling 2 leaf stage, close attention should be paid to the occurrence of pests and diseases, and timely symptomatic medication control. The chemical control was carried out 1 to 2 days before transplanting, and the field was taken with the medicine.

4. Suitable seedling requirements for machine insertion:

1, age: suitable for the insertion of the age of 15 to 25 days is appropriate.

2. Miao Gao: The seedling height with good machine insertion effect is 15~21cm.

3, the plate strength: the plate strength is about 6kg, the seedlings of the seedlings should be good, so that the block is lifted and not scattered.

4, water content: the moisture content of the block is about 35%, pinch the back of the block with a finger, there is a sense of dampness, but no water drop phenomenon.

Five, diced transplant:

Use a cutter and a cutting truss to cut into squares with a width of 27.5 to 27.9 cm and a length of about 60 cm. Carefully roll up and transport to the field to be inserted. In the process of transporting, it should be noted that the number of stacking layers is preferably 3 layers, not too much, to prevent deformation of the block, which is unfavorable for machine insertion.

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