EVALUATING BIODIVERSITY IN DEEP-WATER RICE FARMS DURING AUTUMN - WINTER CROP IN AN GIANG PROVINCE

Tóm tắt

The study was conducted in three ecological areas in An Giang province, where three models of deep-water rice cultivation were established during the autumn-winter crop in 2022. In this study, biodiversity was assessed through the presence of fish, insects and natural enemies in deep-water rice fields. The results of the study showed that the three ecological areas under deep-water rice cultivation, demonstrated greater diversity of fish, insects, and natural enemies compared to traditional rice farms. Fish were found in all three models, and the identified species were common in the canals of the study area. Moreover, the results also showed that the diversity of insects and natural enemies in deep-water rice fields was higher than in controlled fields. A total of 1,093 individuals were recorded in the three models across the three ecological areas, compared to 788 individuals in the controll fields. The biodiversity index showed higher values for the deep-water rice models than for control models (2.58:2.35 in Tri Ton; 2.45:2.35 in Cho Moi; 2.64:2.28 in Thoai Son, for the deep water and controlled fields, respectively). The cultivation of deep-water rice has positive effects on biodiversity, contributing to environmental improvement and offering a sustainable farming solution for adapting to climate change.

Từ khóa: Deep-water rice, ecological areas, fish, insect, natural enemy

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