一、遮荫物的种类与覆盖形式（一）遮荫物的种类1．遮阳网又名遮荫网、遮光网，寒冷纱、凉爽纱。是继农膜之后的又一新型的农用覆盖材料，具有轻便、通气和一定的途光性等特点，用于夏秋季高温期蔬菜生产覆盖，具有这光降温、防台风暴雨、防旱保湿、保持土壤良好的团粒结构、优 First, the types of shade and cover forms (A) types of shade 1. Shading net, also known as shade net, shading net, cold yarn, cool yarn. It is a new type of agricultural covering material after the agricultural film. It has the characteristics of lightness, aeration and certain pastel light. It is used to cover the vegetable production in the high temperature in summer and autumn. It has the functions of light cooling, typhoon rain, Keep the soil good aggregate structure, excellent