Side slope afforestation method for water diversion open ditch in arid area

The invention relates to a side slope afforestation method for a water diversion open ditch in an arid area. The method comprises the following steps of: covering a side slope with a rope net, slotting with a crack-transplanting shovel according to a contour line, compactly filling nutrient soil to form planting holes, planting native shrub and herbaceous plants in the planting holes in a hybrid manner, performing artificial water supplementation through a micro spraying pipe, performing continuous rope net fixing, seed supplementation and water supplementation management for 1 to 3 years, and gradually carrying out afforestation to increase the coverage, wherein with weathering of straw rope fibers and formation of dry branches and fallen leaves as well as biological crusts, a lower cushion surface of a seed library is formed on the slope, and protogenetic short-life, annual and perennial plants can grow on the slope gradually under natural conditions to form a green coverage surface, so that sustainable veg