Planting method for decreasing disease damage to Hylocereus undatus orchard

The invention belongs to the technical field of agricultural cultivation, and particularly relates to a planting method for decreasing disease damage to a Hylocereus undatus orchard, which comprises the steps of selecting a land, planting Hylocereus undatus, intercropping soybean and intercropping hot peppers; The planting method is characterized in that an early-maturing soybean variety is selected, Hylocereus undatus inter-row soil is deeply plowed in middle and late January before hill seeding, mulching film is applied after seeding, and harvesting is carried out from the first ten days ofApril to the first ten days of May; after soybean is harvested, stems and leaves of soybean are crushed, the crushed material is mixed with distillers' grains, the mixture is fermented to obtain a fermented material A, and the fermented material A is scattered onto the surface layer of the soil and is deeply turned to the deep part of the soil. According to the planting method disclosed by the invention, the harvested ste