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1 选择好自然隔离区大白菜是典型的异花授粉作物,虫媒花,能够与白菜自由授粉的植物除不同品种的白菜以外,还包括小白菜,北方称为油菜,小白菜中也包括薹菜,如白菜薹、紫菜薹等;荠菜,包括根用荠菜,在有的地方把根用芥菜称为辣菜、叶用芥菜(也就是雪里蕻);芜青:籽用油菜。同为十字花科作物的萝卜、甘蓝类的蔬菜如菜花、甘蓝、苤蓝不能够与白菜自由传粉,所以就不需要与白菜采种田隔离。隔离的距离以主要传粉昆虫的活动半径距离来确定,一般认为开阔地带隔离距离至少为2000m,但实际这个
1 Choose a natural isolation area Chinese cabbage is a typical cross-pollinated crops, insect-resistant flowers, cabbage free pollinated plants in addition to different varieties of cabbage, including cabbage, the North called rape, cabbage also includes the sedge dishes, Such as cabbage sprouts, seaweed sedge; shepherd’s purse, including the use of shepherd’s purse, in some places the roots of mustard is called spicy vegetables, leaves mustard (that is, snow); The same as the cruciferous radish crops, cabbage vegetables such as cauliflower, cabbage, blueberry is not able to freely pollinate cabbage, so you do not need to be isolated and cabbage farming. The distance of isolation is determined by the distance of the active pollinators of the major pollinators. It is generally considered that the open area should be at least 2000 m apart, but in practice this