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根据菜农的经验，蔬菜茬口的安排应遵循以下四项原则，现分述如下：蔬菜养分需求原则。把需氮肥较多的叶菜类、需磷肥较多的茄果类和需钾肥较多的根茎类蔬菜相互轮作倒茬；把深根类的豆类、瓜类、茄果类，同浅根类的白菜、甘蓝、黄瓜、葱蒜类蔬菜进行轮换倒茬。这样可使土壤不同层次中的养分得到充分利用。一般需肥较多的叶菜类，下茬最好安排需磷肥较多的茄果类，吸肥快的黄瓜、芹菜、菠菜等，下茬最好安排对有机肥第二反应较好的西红柿、茄子、辣椒等。
According to the experience of vegetable growers, the arrangement of vegetable stubs should follow the following four principles, which are described as follows: The principle of vegetable nutrient demand. The need for nitrogen fertilizer more leafy vegetables, need more phosphate fertilizer and more need to turn over the roots of potatoes turnips; the deep roots of beans, melons, solanaceae, with shallow root class Cabbage, cabbage, cucumber, onion and garlic rotation of the stubble. This allows nutrients in different levels of the soil to be fully utilized. Generally need to fertilizer more leafy vegetables, the next arrangement of the best to be more phosphate fertilizer solanaceous, fast fat absorption of cucumber, celery, spinach, etc., the next best arrangement of organic fertilizer second best tomato , Eggplant, peppers and so on.