اﺛﺮ ﻛﺎرﺑﺮد رﻳﺰ ﻣﻮﺟﻮدات ﺑﺮ ﻋﻤﻠﻜﺮد و اﺟﺰا ﻋﻤﻠﻜﺮد ﺑﺮﻧﺞ Oryza sativa L.)( و ﻛﺎﻫﺶ ﻣﺼﺮف ﻛﻮدﻫﺎی ﻓﺴﻔﺮدار در ﺷﺎﻟﻴﺰارﻫﺎ

In Sustainable farming systems, application of biofertilizers of particular importance in increasing the fertility and maintained sustainable soil fertility.The purpose of this study was to increase rice yield by introducing new inputs to farmers as bio-fertilizer, reduce consumption of certain fertilizers such as nitrogen and phosphorous. This research was conducted a randomized complete block design with three replications in split factorial experiments in Rice Research Institute of Rasht. Three nitrogen levels (50, 75 and 100% of the recommended dose) were in main factor and three levels of phosphorous (50, 75 and 100% of the recommended dose) with pure isolates of Herbaspirillum seropedicae bacteria, Glomus mosseae fungi and without inoculation as sub plots. Results showed that the maximum yield (8161/83 kg per ha) and lowest (7586 kg ha) was obtained the application of the of mychorrhiza fungi and the in non-inoculated. The triple interaction was obtained the highest harvest index under the first level of nitrogen in third level of phosphorus in combination with mychorhiza fungi (53 percent), and lowest 39/83% in the third level of interaction between nitrogen and phosphorus and no inoculum.