Longan-and-pachyrhizus interplanting method

The invention belongs to the crops plantation technology field, and discloses a longan-and-pachyrhizus interplanting method. The plantation method comprises the steps of (1) selecting seedlings; (2) digging colonization apertures; (3) transplanting longan nursery stocks; (4) applying fertilizer; (5) trimming branches and leaves and protecting flowers and fruits; (6) planting pachyrhizus sprouts; (7) managing the plantation of pachyrhizus; and (8) harvesting the fruits of longan and managing the longan after the harvesting. The idle land in the middle of the longan trees is fully utilized, and the longan and the pachyrhizus are interplanted, therefore, the cost is greatly reduced and the benefit is substantially raised; at the same time, farm manure is fully utilized and inorganic fertilizer is reduced; management after harvesting the fruits is reinforced, therefore, insect pests are effectively prevented, root and seedlings are protected, and the leaves of the fruit trees are bright; the surface of the harves