The effects of Drought on Agricultural Segzi Plain

Desertification and land degradation are currently phenomena In scientific circles, especially in agriculture and natural resources as a scourge afflicting Gripped many countries, including developing countries which results in, The disappearance of renewable sources in each of these countries. With this aim, the Segzi town was selected as the study region and Four dominant land use of abandoned lands, orchards, farmlands and range lands as control treatments were considered as the treatments Soil samples were taken and soil factors in two groups of correction factors and destruction in the soil surface horizons and Lower soil horizons (0 to 30 and 30 to 60 cm) of soil were studied. Study factors showed that there was a significant difference between treatments in terms of soil acidity in the soils category is relatively poor. In general, in most treatments of various factors, the lower layer of soil degradation and desertification has advanced to, Due to the high concentration of sodium and sodium adsorption ratio in this layer is while less damaging effect has been observed in the surface layer. Indicators of land under organic substances in wastewater, nitrogen, phosphorus, and calcium and magnesium increased and indicators sodium, salinity, acidity and sodium adsorption ratio is reduced. Kolmogorov-Smirnov test for normality of data and analysis of variance was calculated for all the invoices separately and finally, garden and agricultural lands as the best treatment and range lands and abandoned areas as unfavorable treatments were introduced to the soil.