农业综合板块8月27日跌2.7%，大禹节水领跌，主力资金净流出2969.02万元

Group 1 - The agricultural sector experienced a decline of 2.7% on August 27, with Dayu Irrigation leading the drop [1] - The Shanghai Composite Index closed at 3800.35, down 1.76%, while the Shenzhen Component Index closed at 12295.07, down 1.43% [1] - Key stocks in the agricultural sector showed the following performance: Huilong Co. closed at 5.75 with a decrease of 1.88%, Runong Irrigation at 8.22 with a decrease of 3.18%, and Dayu Irrigation at 5.21 with a decrease of 3.70% [1] Group 2 - The net outflow of main funds in the agricultural sector was 29.69 million yuan, while retail investors saw a net inflow of 27.27 million yuan [1] - Specific fund flows for key stocks included: Huilong Co. with a net inflow of 3.37 million yuan from main funds, Dayu Irrigation with a net outflow of 33.06 million yuan from main funds, and a net inflow of 30.94 million yuan from retail investors for Dayu Irrigation [1]