Autumn potato cultivation

Potato is a grain and vegetable crop with short plant and short growth period, so it can be interplanted with many kinds of crops.

Land selection and land preparation: select sandy soil with deep soil layer, loose and fertile soil, good drainage, good air permeability and no eggplant fruit vegetables in 3 years. After deep ploughing 20 Mel 25 cm, the ridge is 60 cm wide, the furrow is 50 cm wide, and the ridge height is 15 mi 20 cm.

The improved varieties were selected, such as Zhongshu 2, Zhongshu 3 and Zhongshu 4, which had early tuber setting, rapid expansion in early tuber stage and short dormant period. Autumn cultivation usually produces 1000 Mu and 1500 kg per mu.

Seed potato treatment: sowing in autumn is in the high temperature and rainy season, and it is easy to rot, so the whole potato should be sown. About 50 grams of potato was selected as seed potato. One week before sowing, the seed potato was soaked in 5 mg / L gibberellin solution for 5 minutes. After being removed, it was placed on the sand bed to promote germination. Take out the bud when it is 2 cm long, put it in a cool place with scattered light, and sow seeds 3 days later.

Sowing at the right time: sowing in advance to prolong the growing period of potatoes as far as possible. In the first and middle of August, seed potatoes were sown deeply on ridges with 2 rows in each ridge, with a row spacing of 35 cm and a plant spacing of 23 cm. Pay attention to drainage and humidity reduction after sowing.

Field management: the cultivation of autumn potatoes should be flooded and fertilized, promoted to the end, early fertilization and early management. Keep the soil loose and breathable during the germination period, and generally do not water before emergence. The size of the water is shallowly watered during watering, and the soil is loosened immediately after pouring. After emergence, early topdressing, early watering, and deep ploughing. In the growing period, no drought, no watering, combined with watering, mid-ploughing only loosely ploughed ridge and furrow soil, while shallow soil cultivation. When the plant height is 20 cm, it is combined with watering to cultivate the soil and weed in the bud stage. There should be no shortage of water in the budding stage, and flood irrigation should be prevented in the tuber-bearing period. Keep the soil moist and loose during tuber formation period and tuber block expansion period.

Control of diseases and pests: the main diseases and insect pests of autumn potatoes are mites and underground pests. In mid-late September, 20% milol was used to control underground pests, mites were used to control mites, and then sprayed every other week, three times in a row, and the diseased plants were removed in time.

Timely harvest: harvest in batches according to the size of potato blocks according to market demand.