عنوان مقاله [English]
Abiotic stresses such as drought, salinity, high temperatures, toxicity of chemicals and oxidative stress are serious threats to agriculture and the environment. This research was carried out in a greenhouse in Khorramabad, Lorestan province, in 2018 in a randomized complete block design with four replications. The test factors in this study consisted of three levels of salinity including control (0 ds/m), mild stress (4 dS/m) and severe stress (8 ds/m), and five levels of biological fertilizers including no compost application as control, and two, four, six and eight tons per hectare of municipal compost application. The results showed that salinity stress significantly reduced the number of seeds per spike of wheat plant and the lowest number of seeds per spike was recorded in severe salt stress treatments. Also, intense salinity stress significantly reduced the grain harvest index compared to non-stress conditions and increased the harvest index from 52% under unstable conditions to 29% in severe stress conditions. According to the results, salinity stress significantly reduced wheat grain yield and the lowest grain yield was recorded in salt stress and non-consumption of compost at a rate of 2.6 tons per hectare. Considering the important role of biofertilizers in improving physical, chemical, biological and soil fertility, providing appropriate levels of these materials in the soil in order to reduce the use of chemical inputs in pursuit of sustainable agricultural objectives in order to achieve a sustainable yield is essential.