Group 1 - The agricultural sector experienced a decline of 0.23% on October 17, with Dayu Irrigation leading the drop [1] - The Shanghai Composite Index closed at 3839.76, down 1.95%, while the Shenzhen Component Index closed at 12688.94, down 3.04% [1] - Key stocks in the agricultural sector showed mixed performance, with Huilong Co. rising by 1.08% to a closing price of 5.60, while Dayu Irrigation fell by 1.86% to 4.75 [1] Group 2 - The net inflow of main funds in the agricultural sector was 28.95 million yuan, while retail investors saw a net outflow of 375.75 million yuan [1] - Huilong Co. had a net inflow of 4.90 million yuan from main funds, while Dayu Irrigation experienced a net outflow of 4.61 million yuan [1] - Retail investors accounted for a net outflow of 1.07 million yuan in Huilong Co. and a net inflow of 0.70 million yuan in Dayu Irrigation [1]