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连续3年夏季在南京进行不同类型遮阳网在不同栽培方式下对夏白菜产量影响的试验。表明：在晴热型夏季．辽阳网的各种覆盖万式均有明显增产效果；但在多阴雨的冷夏型夏季，仅以这光率为42％～45％的灰网在大棚覆盖方式下有一定的增产效果。所以要因夏季气候型的不同而正确选用网型和活用揭盖管理技术，才能获得最佳效益而防止负效应的发生。
Three consecutive years of summer in Nanjing, different types of shade net in different cultivation methods on the yield of summer cabbage test. Show: In the sunny summer. However, in the overcast and rainy summer type summer season, only the gray net with 42% -45% of light rate has a certain stimulation effect under the greenhouse covering method. Therefore, due to the different types of summer climate and the correct choice of net and cover management technology in order to get the best benefit and prevent the occurrence of negative effects.