At present, the production of shade manufacturers more, its width, color and density were different, the transmittance is not the same. The width varies from 90~300 centimeters to black, gray, green, white, black and white, black and gray. The different area of the production of different colors light shading rate is 30% ~ 70%, the lowest in 30% ~ 50% in black shading light transmittance, white and Silver Shade, light transmittance is the highest in 70% or so, other colors light shading rate is generally 40% ~ 60%. Net can be used for 3 to 5 years. In the process of use and storage, management should be strengthened to prolong the service life. The net must be cultivated according to the local natural light intensity, light saturation point and vegetable crop coverage method, suitable for the light transmittance of shade net, in order to meet the normal growth of the crops on the requirements of the light. In aphids and virus disease of serious harm to the area can choose the silver screen. Pepper cultivation should use silver shade net, the best use of black covering seedling.