After the tuber incision is air-dried, use ABT rooting powder No. 5 or No. 8 10 mg/kg deep liquid to evenly spray on the seed potato, evenly dressing, covering with wet burlap, boring for 12 hours, then sowing, or dressing with plant ash. .
Third, selection, selection, cultivation and land preparation
1, selection
Choose lands with deep foundations, loose soil and good drainage. Avoid alkaline plots to prevent scabs from occurring.
2, election
Wheat and corn sorghum were selected, followed by soybean mash (pre-cropping plots with long-lasting residual herbicides and no potato could be grown). Avoid beetroot.
3, cultivating land
Volts, autumn turns, floods, and ridges ridged and repressed. In the spring land preparation plot, it is necessary to wipe out the earthworms in the early spring and reach the state of sowing.
Fourth, fertilization
Soil testing and formula fertilization are applied to achieve a reasonable mix of nitrogen, phosphorus, potassium, and trace elements.
1, base fertilizer
Hectares use 15-20 tons of high-quality fertilizers with an organic content of 8% or more as the base fertilizer.
2, seed fertilizer
Hectare with 150 kg of urea, 225 kg of diammonium, 75 kg of potassium sulfate, mixed uniformly or with the equivalent of pure nitrogen, phosphorus, potassium content of special fertilizer or compound fertilizer (Kinesis of potassium chloride), applied to the strains, avoid burning seed .
3, top dressing
In the early flowering period, the cultivator recovers urea in conjunction with the cultivator, or topdressing urea at the early flowering stage and flowering stage, respectively. The amount of urea is 100-150 kg. Conditions can be sprayed Huimanfeng, Jintianbao and other foliar fertilizers.
Fifth, sowing
1, sowing date
When the temperature stabilizes through 6 degrees Celsius to 7 degrees Celsius, timely sowing.
2, broadcast method
Mechanical sowing or artificial sowing. Ditch the ridges and close the original ridges after artificial seeding. Or take the deduction; after the furrows are plowed and ploughed, they are evenly planted in the furrows, and then break the original ridge to synthesize new ridges and repress them in time to prevent runaways.
3, density
According to varieties and soil fertility, early maturing varieties and high fertility plots should be properly planted, and late maturing varieties and plots with lower fertility should be sparsely planted. Closely planted hectares of seedlings of 60,000-70,000 plants; sparsely planted 50,000 seedlings of 60,000 plants.
Six, field management
1. Checking up seedlings
After the small seedlings are out of the field, they will be inspected and replanted to ensure that they are fully seedlings
2, timely shovel
Before the emergence can be repeated again, remove the topsoil, increase the temperature, both the role of herbicide, but not too much soil. In the top soil of potato shoots, a deep cultivator and shallow soil are used. After the seedlings are flushed, they can shovel it again, then plow a plough, reduce the amount of soil, increase the temperature, and reduce the evaporation of water. In the period of hair-cutting, two times of earthworms are used twice to make earth more than three times, so that the ridges and furrows are narrow, and the width of ridges is wide, and the ridges are loosened, which is conducive to tuber enlargement.
3, control pests and weeds
At the same time as sowing, zincphos-phicide granules can be used for 60-70 kilograms per hectare to prevent and control underground pests such as golden spears and cockroaches.
In the early flowering period 500 times solution of metalaxyl manganese zinc or 500-700 times 70% Baidefu WP or 350-500 times 77% can kill WP or 25% WP Worcester 500 - 800 times liquid to prevent potato late blight. Use 250-300 kg per hectare.
5-10 days after sowing (before emergence) for soil treatment to control seedling stage weeds can be used 10% acetochlor 1200-1500 g / ha with 70% of 550-600 g of penetrazin or 33% of Shida 3750 ml / Public, watered 450 kg spray.
4, pick buds
At the beginning of flowering, the buds were removed to reduce nutrient consumption and increase production.
5, take the big grass
Take the big grass after the beginning of autumn.
Seven, harvest
1, harvest time
Early maturing varieties in late August, mid-late maturing varieties began in mid-September.
2, the harvest method
Artificially broken ridges are required to be ridiculed, not to run hoeing, not to favor rake, to shed light, and to pile up and cover soil in the field to prevent sun drying.
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