THE SELECTION OF THE PHYTOMELIORATION GRADES FOR REHABILITATION OF THE DEGRADED PASTURES OF THE NORTHERN CASPIAN
The purpose of this research is studying the possibility of introducing a culture of new, more efficient and economically valuable species and ecotypes of perennial forage plants and the formation of agrocenosis on their basis, which can effectively resist desertification, deflation and unwanted vegetation changing. The experimental work was staged at the experiments and observations mainly with Poa grasses. For the first time for the conditions of Caspian arid zone the species and ecotypes of perennial grasses of the world´s plant resources involved in the selection process. The varieties slender wheatgrass "Ozernensky" is characterized by a high degree of adaptation to natural climatic conditions, winter hardiness, drought tolerance, salt and longevity. The sort holds a rich plant can be used with success in one place for 10 years or more. It can be successfully used for reclamation and decommissioned agricultural land turnover. The sort is characterized by high stability and high growth trampling by livestock. It is characterized by high and leafy good eatability by cattle. The sort wheatgrass "Ozernensky" is characterized with increased protein content (up 14.2%), which is 1.5-2% higher than the standard. The sort is salt, wind erosion and desertification resistant. The productivity and feeding value of cultivated pastures of the class is 20-25% higher than the corresponding figures of the old-placed phytocenoses. To restore degraded Northern Caspian rangelands we recommend the creation of perennial pasture reclamation agrophytocenosis using perennial grasses such as Agropyrum tenerum Vaseg., Bromopsis inermis, Psatyrostachys juncea Nevski.