Effects of Microbial Fertilizer on Growth-promoting Effect of Triticale Seedlings under Saline-alkali Stress
In order to clarify the promoting effect of microbial fertilizer on the growth of triticale seeds under salt alkali stress,this study used triticale'Gannong No.4'as the experimental material,two types of microbial fertilizer as the research object,and Golmud saline alkali soil as the substrate.Through pot experiments,four treatments were set up,namely,no bacterial fertilizer and plant ash(CK),plant ash(CK1),Bacillus subtilis+plant ash(CM1)and root force multi-microbial compound agent+plant ash(CM2).The results showed that:(1)microbial fertilizer treatment significantly improved the physical and chemical properties of saline-alkali soil.The improvement effect of four treatments on the physical and chemical properties of saline-alkali soil and the growth-promoting effect on triticale were CM1＞CM2＞CK1＞CK.(2)Microbial fertilizer treatment significantly increased the plant height and aboveground biomass of triticale(P＜0.05).The promoting effect of four treatments on the growth of triticale seedlings was CM1＞CM2＞CK1＞CK.(3)Microbial fertilizer treatment significantly improved the saline-alkaline tolerance of triticale,among which CM1 had the best effect,followed by CM2,and both were significantly higher than the control(P＜0.05).The chlorophyll content,soluble protein content,superoxide dismutase and peroxidase activities in leaves under CM1 treatment were the highest,which were significantly higher than those under other treatments(P＜0.05).Therefore,under the condition of saline-alkali soil in Golmud,the combined application of Bacillus subtilis fertilizer and plant ash had better growth-promoting effect on triticale than other treatments,which effectively improved the soil salinization in Golmud and improved the growth effect of triticale seedlings,so as to provide theoretical basis and technical reference for soil improvement in saline-alkali soil.
Microbial fertilizerSaline-alkali stressTriticale promotes growthImprovement of saline-alkali land
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