遮阳网,是继塑料薄膜之后又一种轻质、高强度,耐老化、多功能新型网状农用覆盖物。近年来,国内应用遮阳网覆盖栽培蔬菜发展很快,主要有以下几种类型: 一、伏菜覆盖栽培型。用黑、褐色遮阳网覆盖芹菜、黄瓜、萝卜、小白菜等伏菜,防高温、强光、雨涝,一般增产20％以上。 二、夏菜延后覆盖栽培型。指春棚甜椒、茄子等蔬菜覆网进行越夏栽培,一般增产50～100％。 三、秋菜覆盖育苗型。指甘蓝、花椰菜、芹菜等秋菜覆网育苗,一般成苗率可提高40％以上,秧苗素质提高30％以上。 四、早秋菜覆盖栽培型。指用银灰色遮阳网覆 Shade net, after the plastic film is another light weight, high strength, anti-aging, multi-functional new mesh agricultural coverings. In recent years, the domestic application of shade net cultivation of vegetables developed rapidly, there are several types of the following: First, covered with cultivated volts. Cover the celery, cucumber, radish, cabbage and other greens with black and brown shading net to prevent overheating, glare and rain and waterlogging, generally increasing the output by more than 20%. Second, summer vegetables delayed cultivation type. Refers to the spring shed sweet pepper, eggplant and other vegetables covered summer cultivation, the general increase of 50 to 100%. Third, autumn cover nursery-type. Refers to broccoli, cauliflower, celery and other autumn vegetables covered net seedling, the general seedling rate can be increased by 40%, seedling quality increased by 30% or more. Fourth, early autumn vegetables covered cultivation type. Refers to silver gray shade cover