بررسي تاثير كشت Atriplex canescens توام با ذخيره نزولات جوي (كنتور فارو) بر روي برخي از خصوصيات خاك و پوشش گياهي (مطالعه موردي زنجان)

Study of Atriplex canescens and conservation of precipitations (contour furrow) effects on some soil and plant cover properties (Studied in Zanjan)

The growth and establishment of many rangeland species is difficult in hard and unfit environment conditions of Iran because of low and unfit distribution precipitation. Thus, for successfully in reclamation and modify of arid and semi arid rangelands, it is necessary to cultivate adaptable plant with conservation of precipitation. Distinguish of plant ecological needs could be used to reclamation and modify planning. In this research, it is tried to identify Atriplex canescens and contour furrow effects on some soil and plant cover properties in Zanjan, after 11 years cultivated of Atriplex canescens. Soil and plant factors respectively including, nitrogen, phosphorous, potassium, texture, EC, organic matter, acidity in depth of (0-10) cm and percentage, density, composition, palatability were measured. For sampling and analyzing of data were used of split plot scheme, ANOVA, Duncan test and t-test. Treatments were including area of between two contour furrows and within contour furrows (sub bush) and uncultivated (controlled) of north and south hillside. The results showed that soil of sub Atriplex. canescens cultivated increased, nitrogen phosphorous, potassium, EC, organic matter, acidity in surface layer. The cultivated and uncultivated regions has been caused significant different in kind and composition of plants. The results showed that halophyte and unpalatable species has been increased in the cultivated regions.