... the Beijing Municipal Academy of Agricultural Sciences Horticulture, black shade nets to reduce the maximum average temperature 4-5 Degrees , ... maximum temperature of 9-12 Degrees; silver-gray shade nets to reduce the maximum average temperature 4.3 Degrees , maximum ... not directly affected by erosion, soil compaction is not easy, anti-hail, cold, anti-frost.Pl contect me if you have qusetion.