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一、田块选择选择排灌方便、土层深厚、耕性良好、肥力中等以上的平地或缓坡地,避开前茬是块根类、茄科作物的地块。前茬收获后及时深翻整地,顶凌耙耱,整平保墒。对地下害虫危害严重的地区,可结合整地,每亩用3%辛硫磷颗粒剂2.0—2.5千克或1%敌百虫粉剂3—4千克拌毒土沟施进行防治。二、选择适宜的脱毒种薯应根据水、肥、光、温条件,选择高质量的脱毒种薯,注意剔除冻伤病虫害、畸形的薯块。宜选
First, the choice of field plots convenient irrigation and drainage, deep soil, good tillage, fertility medium or above the flat or gentle slope, avoiding the former crop is a root, solanaceous crops plots. Pre-harvest after timely deep-turn harvesting, Ding Ling rake 耱, leveling soil moisture. Harmful to underground pests in the area, can be combined with site preparation, with 3% phoxim granules 2.0-2.5 kg or 1% trichlorfon powder 3-4 kg mixed soil ditch control implementation. Second, select the appropriate virus-free seed potato should be based on water, fertilizer, light and temperature conditions, select high-quality virus-free seed, pay attention to remove frostbite pests, deformities of potato. Should choose