国债期货开盘，30年期主力合约跌0.03%，10年期主力合约跌0.02%，5年期主力合约跌0.00%，2年期主力合约涨0.04%。

Core Viewpoint - The opening of government bond futures shows mixed performance across different maturities, indicating varying market sentiments towards long-term and short-term bonds [1] Group 1: Bond Futures Performance - The 30-year main contract decreased by 0.03% [1] - The 10-year main contract decreased by 0.02% [1] - The 5-year main contract remained unchanged at 0.00% [1] - The 2-year main contract increased by 0.04% [1]