With many varieties of vegetables, short growth cycle, and high multiple cropping index, scientifically arranging vegetable garden gargles can restore and improve soil fertility, reduce pests and diseases, increase yield, and improve quality. It is an extremely effective agricultural production increase measure. Different vegetables need different fertilizers, such as vegetables such as green vegetables, spinach and other vegetables require more nitrogen; fruits, vegetables such as melons, tomatoes, peppers require more phosphorus; potato, yam and other root vegetables need potash fertilizer Many of them are cultivated in rotation to make full use of various nutrients in the soil. Different vegetables have different root depths. The deep-rooted eggplant and legume vegetables work with shallow-rooted cabbage and onion and garlic vegetables. Fertilizers at different levels in the soil can be fully utilized. The rotation of different kinds of vegetables can change the living conditions of pests and insects and reduce pests and diseases. For example, grain crop rotation and paddy crop rotation can control soil-borne diseases; planting onions and garlic vegetables and then planting Chinese cabbage can greatly reduce the occurrence of soft rot. The rotation of various vegetables is different. Such as cabbage, celery, cauliflower, onion, garlic, etc. in the serious incidence of the plot can be used for several times, while the need to increase base fertilizer. In addition, from the standpoint of time, the interval between watermelon cultivation is 1-2 years; potato, yam, ginger, cucumber, pepper etc. is 2-3 years; tomato, taro, eggplant, cantaloupe and pea are 3-4 years.