...农业技术创新；三元结构；技术需求 Modernization and the Formation of A Tripa [gap=828]Key Words:modernization；agricultural innovation；tripartite-structure；requirement of technology ..
The paper analyzes the frame structure theory, the communication theory, the behavior alternation theory in products, and theory of the agriculturalinnovation and technology diffusion.
农业技术扩散的理论主要有框架理论、沟通理论、农户行为改变理论和技术创新扩散理论。
2
The course characteristic of agricultural variety technological innovation are: Multiple - link, correlation, conditionality and two-way.
农业品种技术创新的过程特征是：多环节、关联性、制约性和双向性。
3
The scale of a farming unit - household - determines the power of induced demand for agricultural technology innovation, and the demand, in turn, determines the supply of technology.