நெற்செய்கை காணிகளின் நில தரமிழப்பு நிந்தவூர் கமநல சேவைப் பகுதியை மையப்படுத்திய ஆய்வு

Abstract

Globally, agriculture is an evolving sector undergoing various changes. But these agricultural lands are seen as a sector facing various challenges. Today, chemical fertilizers are used in Sri Lanka to increase production. Today in Sri Lanka, chemical fertilizers are being used to increase production. Fertilization is increasing in Nintavur Agrarian area. Along with this, agricultural lands are subjected to erosion due to sea erosion and salt water intrusion in rice fields and the land deteriorates. This study identifies the nature of degraded lands and assesses their impact on productivity. For this study, soil samples were collected from 11 agricultural plots in Nintavur area and tested for Electrical Conductivity. The data were spatially analyzed with the help of Geographic Information System (GIS) through Geo Statistical Spatial Interpolation (Kriging) method. According to this, 23.6% of the land is found to be high salinity, 50.3% is moderate salinity and 26% is low salinity. Also, when compared with rice production data based on secondary data, it was found that rice production has decreased in saline areas. Also, according to the information received from the farmers of this region through questionnaires and interviews, it was found that sea erosion, chemical use, irrigation system, and drought are the major salinization factors. In order to reduce the salinization, awareness activities should be carried out by creating black rock barriers and sand barriers in the coastal areas.