1. The varieties that are suitable for cultivation in our province are: Dongnong 303, a special early maturing variety, Kexin No. 4 of early maturing variety, South Zhong 552 and Hubei Oshu No. 3 of medium maturing variety, and the Atlantic variety of processing type.
2. The selected fields should be selected for deep plowed layer, loose soil, good drainage and irrigation, rich in organic matter, neutral or slightly acidic, sandy rice fields. Rice piles should not be too low or too high when harvesting rice. It is better to keep the piles at a height of 15 cm to 20 cm. Before the planting, the ditch is to be hatched. The width of the car is 1.4 meters to 1.6 meters, and the width of the ditch is 20 cm to 30 cm. The ditch depth is 15 cm to 20 cm. The soil dug during the ditching should be evenly thrown in the middle of the car. The carver should be shaped into a turtle shape to facilitate drainage. Field grass can be manually eradicated and no herbicide can be applied.
3. Seed processing The selection of a fresh seed potato that is free of pests and diseases, free from frost damage, and smooth surface is best done with a single whole potato that weighs about 30 grams. Its germination potential, seedling growth rate, and yield are all better than those of diced seed potatoes. it is good. However, the production often accompanied by a single seed weighs more than 50 grams, for these seed potatoes need to use a knife after cutting, each seed potato should have one or two buds with apical dominance, or after sowing does not sprout or growth potential Very weak. When it comes to rotten potatoes, the knife must be cleaned before it can continue to cut. The diced potato chips were immersed in the carbendazim solution for 3 minutes to 5 minutes. After the fish was removed, the surface water was allowed to dry and the seeds were immersed in the plant ash to prevent rot infection. Do not touch the buds on the seed potatoes when sowing. If the seed potato has not passed the dormant stage, germination is needed to break the dormancy of the seed potato, promote germination early, emerge early, and emerge neatly.
4. Timely planting of Changshan Chunshu should be planted before and after the Spring Festival (from mid-December to late January), and autumn potatoes should be planted at the summer side (late August). Other areas can be planted in advance according to latitude and altitude. The treated seed potatoes will be placed directly on the surface of the planter. Generally, each plant will be planted in four or five rows, with a row spacing of 35 centimeters and a spacing of 25 centimeters, and 4,500 strains to 5,500 strains per 667 square meters. Slightly press the seed potato slightly when sowing, so that the bud eyes are in full contact with the soil.
5. Fertilize and cover the grass with ash fertilizer (grasswood ash, coal ash, and fire and earth ash) and mix rotted 1,500 kg of pig manure after planting. It is advisable to cover seedless plants, and apply compounding at 667 m2 per car surface. Fertilizer 30 kg to 40 kg, then neatly cover 8 cm to 10 cm thick straw. (Mechanical harvesting of paddy rice should not be covered by chaos, which can lead to the inability of the potato to emerge.) In case of drought when covering grass, wet straw should be poured; in case of strong winds, shoots should be kept under pressure to prevent the wind from blowing grass. After clearing the grass, the ditch will be cleared, and the dirt dug in the ditch will be evenly pressed on the straw to prevent the straw from being blown by the wind and causing the seed potatoes to be exposed.
6. Moisture management During the growth and development period of autumn potato, it must be ensured that there is sufficient water, especially during the expansion of the tubers, the transpiration of the above ground is strong, and the underground stems grow rapidly. At this time, the water requirement is the most, and the soil should always be kept moist to promote Tuber enlargement, but also conducive to the decay of straw. Drought should be taken when the small water Shunxiang furrow irrigation, so that water slowly seeping into the car, flood irrigation can not be used. Autumn or rainy season, should pay attention to drainage anti-staining. After the spring, we must pay attention to draining water in time.
7. Timely harvest When the stems and leaves appear yellow, that is, the characteristics of ripe potato, you can harvest. When a small household is planted in a rural area, large potatoes can also be harvested first, allowing the young potatoes to remain in the ground and continue growing. Straw cover planting potatoes, 70% of the tubers are grown on the ground, little tubers into the soil, when harvesting, as long as the rice straw to open, you can pick up the potatoes.
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