中文摘要：

行业R＆D投入与产出绩效之间并不是简单的线性关系，不同的行业类型具有不同的创新特征，R＆D投入与产出的关系也存在差异。本文基于Pavitt创新产业分类，采用大中型工业企业面板数据，对我国制造业不同行业R＆D投资与绩效的关系进行非线性回归，结果表明我国制造业四大类行业中，供应商主导型和规模密集型行业R＆D投入与绩效的关系呈现弧度较高的倒U型曲线，而专业化供应商和以科学为基础的行业R＆D投入对产出绩效的影响呈平坦的倒U型曲线关系。围绕产业类型的创新行为特点，本文对这一结果进行了解释。

英文摘要：

The relationship between sectorsl R＆D investment and performance is nonlinear. Different characteristics of innovation in different sectors determine the seetoral difference in relationship between R＆D investment and performance. Using a panel of China＇s large and mediumsize enterprises, this study investigates the relationship between R＆D investment and output performance. The empirical results show that R＆D investments have an inverted U - shaped cut＇near relationship with output performance of the firm. Furthermore, the relationships of R＆D investment and perfommnce in four different types of sectors, based on the Pavitt＇s taxonomy of innovating firms, are also analyzed.