document.writeln('棉纱主力合约涨超2% 棉花主力合约涨超1%');document.writeln('棉花主力合约下跌2% 棉纱主力合约向下触及19900元/吨');document.writeln('棉花主力合约涨幅扩大至2%');document.writeln('棉纱主力合约涨幅扩大至2%');