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Journal of Agriculture ›› 2025, Vol. 15 ›› Issue (12): 19-26.doi: 10.11923/j.issn.2095-4050.cjas2024-0162

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Construction of Knowledge Graph of Wheat Varieties and Pest Control

ZHAO Xiang(), YANG Wanxia(), YANG Jun, XIN Chen, LI Qi   

  1. School of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou 730070
  • Received:2024-08-13 Revised:2025-03-15 Online:2025-12-20 Published:2025-12-16

Abstract:

The paper aims to address the issues of wheat variety selection and corresponding pest and disease control in different regions. Firstly, a data corpus with 3481 wheat variety data and 312 pest data was constructed. According to the characteristics of the corpus, the knowledge system model layer of wheat variety and pest control was defined in a fine grained manner. Secondly, the comparative advantages of Bert and Word2vec word - embedding models on small and medium-sized datasets were verified on public datasets and constructed datasets respectively, and then the attribute knowledge of wheat varieties and pests was extracted by using models suitable for each scale datasets. The experimental results showed that the F1 value of Bert-BiLSTM-CRF model was 0.1499 higher than that of Word2vec-BiLSTM-CRF model in breed datasets. Word2vec-BiLSTM-CRF model was superior to Bert-BiLSTM-CRF model in pest datasets.

Key words: knowledge extraction, knowledge graph, pattern layer, wheat pests and diseases, wheat corpus, Bert-BiLSTM-CRF model, word - embedding model