Đánh giá một số tính chất đất đai làm cơ sở phát triển nông nghiệp theo hướng hữu cơ và hữu cơ ở tỉnh Thừa Thiên Huế

Abstract

This study aimed to determine the potential areas for organic agriculture in Thua Thien Hue province. A total of 123 soil samples were collected from different types of cultivation land, including traditional agriculture, fresh agriculture, and organic agriculture. The soil properties, such as total nitrogen, total phosphorus, total potassium, organic matter content, soil texture, and pH_KCl, were analyzed. These soil properties were then subjected to principal component analysis to indentify the potential areas for organic agricultural development. The results showed that the current area under organic agriculture was very small (approximately 99.7 hectares), with crops, such as wetland rice, peannut, vegetable, and fruits. The cultivated soil was found to be relatively acidic (pH_KCl = 4.37), with medium levels of total nitrogen (0.13%), total phosphorus (0.13%), total potassium (0.7%), and organic matter contents (1.84%). This study identified 32 out of 123 sites with good soil conditions that could be suitable for developing organic and semi-organic agriculture. Among these, 9 sites belong to Que Lam company, where rice and vegetatbles have already been cultivating. Overall, the characteristics of cultivated land appear suitable for expanding the potential areas for organic agriculture in Thua Thien Hue province.