Jiangsu Province, rice printing and seeding, strong seedling machine, seedling breeding technology, full-fledged seedlings, fertilizer promotion and control technology route, by extending the time of the lower leaves to receive light, expand the suitable planting period of transplanted seedlings, cultivate strong seedlings, strong seedlings, To a certain extent, it alleviates the contradiction between rice and wheat sputum caused by conventional scabbard machine insertion. This article will briefly talk about the technology of rice seed printing and planting seedlings in Jiangsu Province.
1 machine inserts large and strong seedlings
The morphological and physiological indexes of standardized blanket-shaped large-sized seedlings are 15~22 cm, the stem width of single plant is more than 0.28 cm, the number of green leaves per plant is ≥3.5, the roots are developed white, and the number of white roots per plant is more than 12. More than 6 forces.
2 Nursery technical regulations
2.1 Preparation and preparation of nutrient soil
2.1.1 Nutrient preparation
Select the fertile field, remove the surface soil and remove the sundries, and use a 5mm mesh sieve to avoid the selection of heavy clay and heavy sand. It is best to use acidic soil.
2.1.2 Nutrient soil preparation
According to the conditioning agent: soil = 1:100~120 ratio, the machine is added to the mulching green nutrient to be added to the sieved fine soil, which can be mixed in 2~3 days in advance, up to 7 days.
2.2 Seedbed preparation and production
2.2.1 Seedbed site selection
Select a field with a flat land, fertile soil, and convenient irrigation and drainage, and keep the field in Putian according to the ratio of Putian: Datian=1:80.
2.2.2 raft production
The raft is made before the sowing, the width of the medlar is about 1.4 m, the width of the sulcus is 25~30 cm, the depth is 20 cm, the width of the surrounding groove is 30~40 cm, the depth is about 30 cm, and the width of the sputum is 2.8~3.0. m.
2.2.3 Foliar fertilization
After the initial grading of the gully, the seedlings will be spread evenly on the bed surface with 100 g/m2 of fertilization, or the soil can be evenly spread on the bed with the amount of 100 g/m2 after drainage. Face, so that you can use the moisture of the seesaw to dissolve into the soil.
2.3 Seed preparation and processing
2.3.1 Variety selection and seed quality requirements
Variety selection: high-quality, high-yield and comprehensive resistance of the Chinese glutinous varieties;
Seed quality requirements: It is required to meet the national secondary standard. The rice seeds have been mechanically treated, except for awns and branches.
2.3.2 Seed treatment and seed dressing for large-scale seedlings
First, the seeds are sun-baked for 2~3 days, then the special type 3.5% Mi Xian·Makingling powder is mixed with the powder: the seed is 1:80~100, then rinsed with water for 1-2 times. Dry in the weak sun or in the shade and print the sticky.
2.3.3 Printing attached paper
Using a printing seeder, different widths of the trays are used to match the width of the printing line and the hole spacing is (0.7~0.9) cm×(0.9~0.7) cm. The required blanking rate of the glue points is less than 5%, multi/double The grain rate is not higher than 20%, the disk is about 3,000, and the 23 cm × 58 cm plate is about 2,500 seeds per plate.
2.4 Sowing
2.4.1 Sowing time
According to the transplanting period, the time of the field, the tillage and the time of the field, the suitable sowing date is calculated according to the predetermined age of 25~30 days.
2.4.2 Swinging the soil
Pull the wire at the middle of the two ends of the seesaw, and determine the wobble plate according to the width of the attached seed. After the plate is placed, put the nutritious soil in the pan and flatten it. The soil thickness is about 2.0 cm, not less than 1.8 cm.
2.4.3 Spreading paper
With the seeds facing up, the paper rolls will be placed along the long direction of the seesaw, rolled and placed in the tray, and the water can be sprayed while laying, and the adjustment should be made to prevent deviation. After laying the attached paper, spread a layer of about 0.5 cm thick nutrient soil.
2.5 emergence management
2.5.1 Water supply after sowing
Through the infiltration, the soil in the tray is soaked, avoiding that the soil surface in the water surface is flush or higher than the soil, and the water in the water should be gentle, especially at the water inlet, to prevent the water from rushing onto the surface, and all the surfaces are It has been uniformly absorbed by water and drained.
2.5.3 Seedling management
5~8 days after sowing, when the seedlings are out and the first leaf is fully unfolded, the grass is peeled off;
Uncovering the main points of the film: the morning of the cloudy day, the sunny day and the evening, and the rain and rain are recommended;
Seedling management: After the film is uncovered, the method of micro-spraying is used to align the water once.
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