Abstract
In this article, through a multithreaded focused web crawler type crawl, the knowledge related websites to establish database of crop diseases and pests control of crop diseases and pests control to create professional knowledge search engine, and by using natural language processing, knowledge map technology for processing and storage of data, such as, lower demand for the user to enter the search term, optimization of the user's search experience. This study constructed a complete search engine and provided a set of methods for obtaining and gathering data related to crop disease and pest control knowledge, which can also be applied to information collection and processing in other fields.
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