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1选好制种基地1.1严设隔离区父母本以行比种植,主要依靠昆虫传粉,隔离区必须在3 000m以上;在喷药防止昆虫传粉依靠人工集中传粉的制种区,隔离区设置2 000m以上。隔离区范围内,不允许种植其他向日葵,包括庭院零星种植的食葵、油葵、观赏性的花葵、自生植株,必须在开花前彻底清除干净。1.2选地选择有隔离条件的近3年内没有种植过向日葵、也无自生葵花的田地,要求适宜的土壤质地、肥力均匀、
1 selected seed production base 1.1 strict quarantine area parents to line than planting, mainly rely on insect pollination, the isolation zone must be more than 3 000m; insecticide in spraying to prevent pollination rely on artificial pollination seed production area, the isolation zone set 2 000m above. Within the area of isolation, it is not permissible to plant other sunflowers, including sunflower, sunflower, or ornamental flower, sporadically planted in the courtyard, and must be completely removed before flowering. 1.2 The selection of the conditions for the past three years have not been planted in the past three years, sunflowers sunflower fields, require appropriate soil texture, fertility,