Cultivation techniques of Potato covered with broken Grass

In recent years, with the expansion of mechanical harvesting area of late rice and middle rice, there are more broken grass after mechanical harvesting. Covering potato with broken grass after machine harvest, no tillage for soil preparation, no soil covering for sowing and no digging for harvesting are effective simple and efficient cultivation techniques.

Select good seeds. Dongnong 303 and other early maturing varieties were selected, which grew strongly, tubers formed early, very early, growth period of about 60 days (seedling to harvest), strong resistance and good waterlogging tolerance.

Fine soil preparation. Potato is planted in the winter fallow field after late rice harvest. 2500 - 3000 kg organic fertilizer, 2.5 kg urea and 15 kg calcium superphosphate are evenly applied to the rice field surface per mu. According to the ridge width of 2 meters (even ditch) do ridge, ditch width of 20 cm, ditch depth of 25 cm. At the same time, open the surrounding ditch and the main ditch. Put the furrow soil on the ridge surface and level it evenly.

Sow seeds at the right time. It is usually planted from late January to early February. 1 kg seed potato cut into about 40 pieces, cut well after natural callus 2~3 days can be sown. Each plot planted 3 rows, row spacing 60 cm, plant spacing 20 cm, mu planted about 5500 plants, mu angle seed quantity 125~150 kg. When sowing, evenly place potato pieces on the ridge surface according to the row spacing, so that the bud eyes are upward, the potato pieces and the soil should be closely connected, and the potato pieces are covered with 5~6 cm thick broken straw. The standard of covering grass is to look down from the top of the potato to prevent the potato skin from turning green. If you want to advance the marketing time of commercial potato, you can cover a layer of plastic film after sowing grass.

Field management. Potato growing season rain more, to timely drainage. Field management should be strengthened during potato growing period to prevent potato from turning green after exposing mulch and affecting commodity quality. During the growth of plants, attention should be paid to the prevention and control of aphids, cutworms, scab diseases, virus diseases and other major diseases and insect pests.

Timely harvest. Potatoes should be harvested when most stems and leaves turn yellow and tubers stop expanding. Choose to harvest in the sunny morning when the soil is dry.