Đánh giá sự khác biệt về chỉ tiêu môi trường đất ở các sinh cảnh khác nhau tại vùng Cù Lao Dung

Abstract

This study is aimed to compare the soil indicators of pH, salt level, total nitrogen percentage, phosphorus percentage and potassium percentage in six selected habitats represented by the shrimp farm, the pomelo, the coconut, the nipa palm, the sugarcane, and the chili farm, during the rainy season of October, 2019 in Cu Lao Dung island. From the representative locations, 30 samples of soil were collected from An Thanh II commune to An Thanh Nam commune. The results showed that the average salt level was 3.51‰, which was within the acceptable limits, but it still had some eff ects on plant growth. The soil pH values were between 4.4 and 5.87, which was designated acidic soil. The soil under investigation was found rich in nitrogen but poor in photphorous, thus suitable soil improvement measures needed. Particularly, the measured potassium value was much higher than those of nitrogen and photphorus because the farmers applied fertilizers to reduce the salinity in soil. The inequality in soil indicators could aff ect the growth of crops in the researched areas and all over Cu Lao Dung generally