1, narrow sense of agricultural extension: refers to the guidance of agricultural production, scientific research achievements of universities and scientific research institutions, through appropriate methods.

Introduced to farmers, so that farmers can acquire new knowledge and skills and apply them to production, thereby increasing output and income.

2. Agricultural extension in a broad sense: it not only refers to the simple extension of agricultural technology, but also includes educating farmers, organizing farmers and cultivating farmers' voluntary leadership ability.

Sleeve, improve the actual quality of life of farmers.

3. Modern agricultural extension: that is, to pass useful information to people (communication process) and help them acquire necessary knowledge.

Skills and correct concepts in order to effectively use these information and technologies (educational process).

Agricultural extension: it is an interdisciplinary subject that studies the theory and method of agricultural extension and guides the practice of agricultural extension.

Agricultural extension: a service and system that mainly helps farmers improve farming methods and techniques, increase product benefits and income, improve farmers' living standards and improve rural social education level through education.

Agricultural technology extension: refers to experiment, demonstration, training, guidance and consultation.