Study on Evaluation of Herbicide Removal of Invasive Plant Micrantha Using Big Data Remote Sensing Images from Computer Beidou Navigation

The surface spectral data of Mikania micrantha were studied by using satellite hyperspectral images. A hierarchical extraction algorithm based on MSMEAP algorithm was proposed to identify and extract Mikania micrantha invasion on a large scale. A color image is divided into several uniform small blocks, and then the average value of each pixel color vector is obtained. The results show that the recognition accuracy of spatial distribution map of Micrantha based on OHS remote sensing image reaches 82.6%, which can be well adapted to the current monitoring requirements. In the use of herbicides, 2, 4-D sodium salt, 2, 4-D butyl ester two phenoxy carboxylic acid herbicides are relatively ideal drugs, they can effectively inhibit the growth and harm of harmful plants. The best treatment effect is applied to the middle and top of the plant.