عنوان مقاله [English]
The study was located in Dasht Abkan, Padagan Kash, Dorahi Kosheh and Scale Abad regions of the Kash city. For this research selected and made fence a plot land (1 hectare) in each region. Two soil samples were collected from layers (0-45 and >45 centimeter depth) of each position, and analyzed for pH, EC, ESP, CaCo3, carbon organic, potassium, phosphor and calcium characteristics. Range-gauge has been put at each position for measure rain daily. We put 4 transect and each 10m establishment 1×1m plat. The parameters measured such as canopy, high of plant, diameter of plant, stem density, soil bare percentage, stone cover percentage, number dry species and number planting. To estimate of regression coefficient and Correlate coefficient data were analyzed by SPSS and MSTATC program, respectively. The result shows that annul average forage product (1996 -2003) in mention area were 172.8, 92.3, 67.1and 97.5 Kg/ha, respectively. In addition, the result shows that the between forage product and variances of soil have been high correlation index with K (P=0.073, R=886) and sand (P=0.230, R=0.728) percentage, Moreover have high correlation index with C (P=0.039, R=928) and P (P=0.001, R=993) and t have significant relation with it. In addition, the regression coefficient shows that the calcium, sand and ESP in forage product has effects in, Padagan Kash, Dasht Abkan, Dorahi Kosheh and Scale Abad regions, respectively.