Potatoes in open field cultivation in the autumn: High-quality, high-resistance, and short-term dormant species are selected, and spring-grown detoxified potato plants such as Mila, Hui-2, and Feiwuriei are used. These varieties are early maturing varieties with a fertility period of about 90 days.

Seed processing potato seed potato in autumn is generally a whole piece of sweet potato, and the healthy and high-quality small whole potatoes are used for germination. The germination is generally performed on August 20-25; after germination, the germination is required and the seedlings will be used. 0.5% lime aqueous solution or 5~10ppm gibberellin (90%) solution soak 1~2 hours, then use 70% thiophanate-methyl 500 times solution or mix plant ash to disinfect the tubers, dry and germinate; As long as about 1.5 centimeters, choose to sunny morning or evening sowing.

Reasonable dense planting depends on the soil and fertility conditions. The fertile soil can be properly sparse. In Huize County, the general planting density is 5500-6500 plants per acre, and 160-180 kilograms per acre. The width of a narrow row is conducive to soil cultivation. The row spacing is 40 centimeters, the pond spacing is 25 centimeters, stem buds are downwards, and the cover soil is 5 centimeters thick. about. When the seedling height is about 15 centimeters, it will increase the soil permeability and increase the temperature difference between day and night, which will be favorable for high quality and high yield.

Strengthen fertilizer and water management combined with the short growth period of the growth period of the autumn potatoes, apply the basic fertilizer, generally about 1500 kg of Mushi farmyard fertilizer, 45% of potassium sulfate compound fertilizer or 100 kg of special compound fertilizer, cover the soil with trenches, and then strengthen drainage management. The autumn potato plots must be able to discharge energy. Before emergence, after the rain, they must be drained in time to prevent rotten seedlings and rotten seedlings.

Field management 1 After sowing, due to continuous drought and high temperatures, straw or wheat straw can be used to cover the surface of the soil, reduce the soil temperature, and timely irrigation, and promote germination; in case of heavy rain, it should be drained in time to avoid bad planting. 2 After application, 10~15 kg urea was applied in combination with medium-tillage loose soil to promote seedling growth. In the middle and later stages, potassium dihydrogen phosphate and root expansin were sprayed 1~2 times; during the growing period, soil moisture was timely watered. Stop watering 7 days before harvest. 3 cultivator cultivating grass. Qi Miao to cultivating, cultivating tillage 2-3 times before cultivating, in addition to abandoned weeds break the knot, cultivate thick glutinous rice, create a good condition of soil loosening, which will help increase the tuber rate and the quality of the potato block. 4 timely control of pests and diseases. The main disease of autumn potatoes is the disease, which can be controlled with 1% Bordeaux mixture and agricultural streptomycin (according to the instructions for use); the pests are mainly underground pests and aphids; the underground pests can be combined with phoxim 200 milliliters of soil to control the soil preparation. The locusts can be sprayed with 40% omethoate EC 1000 to 2000 times during the occurrence period.

Timely harvest of autumn potatoes can generally be harvested and marketed after about 65 to 90 days after sowing, and can also be harvested in advance according to market demand. Under normal growth conditions, yellow leaves can be harvested.

After harvesting, it can also be stored underground and sold on standby in order to increase economic income.

COG

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