{"stock_code": "601899", "stock_name": "紫金矿业", "market_type": "A", "analysis_date": "2026-03-31T09:17:54.415559", "structure_snapshot": {"structure_type": "downtrend", "ma200_position": "above", "phase": "unclear", "key_levels": [{"price": 35.86, "label": "关键阻力位（头肩顶颈线）"}, {"price": 29.8, "label": "近30日最低点（2026-03-23）"}, {"price": 28.39, "label": "MA200"}], "trend_description": "价格32.72，低于MA20（34.53）1.81元，低于MA60（36.88）4.16元，高于MA200（28.39）4.33元。MA5（32.66）低于MA20（34.53），MA20（34.53）低于MA60（36.88），呈现空头