After sowing - pre-emergence management: after sowing, always observe the temperature in the shed, let it out when the temperature exceeds 30°C during the day, pay attention to antifreeze at night, and find that when drought occurs, water is poured to reduce the number of watering. 3 to 4 days before transplanting to cool the seedlings, do not water.
Seedling Age Criteria: The seedlings are required to be unearthed, roots developed, disease-free and insect-free just after transplanting. Seedlings are too high to colonize, affecting the cover film.
Selecting the land: Choose a land with flat terrain, fertile soil, deep soil, dry irrigation, waste water, sandy or organic matter, and do not choose saline land. The pH should be 5-7.
Selection: Former crops include wheat, corn, millet and other grass crops, followed by soybeans, sorghum, and hemp seedlings. Avoid the use of sugar beets, sunflowers, eggplants, peppers, tomatoes, cabbage, cabbage, etc., that have common diseases with potatoes. Former husband. Potatoes are relatively sensitive to some herbicides and, therefore, plots with long residual herbicides should be avoided when selecting forage.
Site preparation: before the site preparation, farmyard manure should be applied, and 3 to 4 cubic meters per mu. The site after the fall of the fall is to be selected, that is, immediately after the harvest, rotary tillage, heavy tillage, deep plowing, soil treatment and ridging For the continuous work plots, the deep pines should reach 30-40 cm and the ridge spacing should be 65-70 cm.
Planting time: April 20 to early May transplanting planting, select the cold head warm weather set.
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