Yes, there are regulations on the use of biodegradable agricultural plastic mulch films. These regulations vary by country and region. They often include standards for biodegradability, labeling requirements, and guidelines for proper disposal to minimize environmental impact. For instance, in the European Union, the use of biodegradable mulch films is governed by specific directives that outline the conditions under which these products can be marketed as biodegradable. Compliance with these regulations is crucial to ensure that the use of such films is both environmentally friendly and economically viable.