dc.description.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. |
en_US |