Abstract: The present disclosure provides an ecological governance method based on erosion prevention and control for a gentle slope farmland and relates to the technical field of ecological governance of farmlands. The ecological governance method based on erosion prevention and control for a gentle slope farmland includes the following steps: sampling a gentle slope farmland to investigate erosion thereof; and determining erosion of a gentle slope cultivated land and selecting a corresponding recovery strategy based on a detection result of a sample, a soil quality index (SQI), and a comprehensive vegetation quality index (VQI), where the recovery strategy includes a natural recovery method and a biological-farming comprehensive recovery method; enclosing the gentle slope cultivated land, fallowing the gentle slope cultivated land and reducing tillage; exterminating insect pests and poisonous weeds in the enclosed area; and turning over straws under soil by a cultivator. The growth of poisonous weeds is inhibited.

Abstract: A retaining device for retaining a small-sized detective sensor includes a flexible rubber body. The flexible rubber body includes a first retaining portion, a first connecting portion, a main body portion, a second connecting portion, and a second retaining portion which are connected in sequence. An inner side of the first retaining portion and an inner side of the second retaining portion are provided with primary Velcro retaining straps. An inner side of the main body portion is formed with a recess for installing the small-sized detective sensor.