A kind of phosphorus-dissolving bacteria-induced fertilizer for improving the availability of phosphorus in acidic soil and its application

Abstract

The invention relates to microbial fertilizer, and specifically discloses a phosphate solubilizing bacterium induction fertilizer capable of improving the effectiveness of phosphor element in acidic soil and applications thereof. The fertilizer is prepared by adding a phosphor fertilizer into an induction matrix and then subjecting the mixture to a stress treatment of acidic rain with a pH value of 3.5 to 4. The reproduction of most species of phosphate solubilizing microorganisms in the induction matrix is activated; after the stress treatment, the step of using a specific culture medium to screen high efficient phosphate solubilizing bacteria is eliminated, the activated induction matrix containing a plurality of phosphate solubilizing floras is subjected to aerobic culture, then the induction matrix is directly mixed into the cultivation soil according to a ratio of 10 to 15%, and the whole induction matrix is taken as a phosphate solubilizing bacterium fertilizer. The method breaks the limitation of a method using a specific culture medium to select high efficient phosphate solubilizing bacteria, largely enlarges and enriches the resources of phosphate solubilizing bacteria, moreover, the operation is simple and convenient, the cost is low, and the practicality is strong.

Description

technical field [0001] The invention relates to a microbial fertilizer, in particular to a phosphorus-dissolving induction fertilizer for improving the availability of phosphorus in acidic soil and its application. Background technique [0002] Phosphorus is an essential nutrient element for plant growth and development, and it is also one of the main nutrient elements that limit crop yield. The red soil in the southern region is seriously deficient in phosphorus, and more than 95% of the phosphorus in the soil is invalid phosphorus, which is difficult for plants to use. Due to the lack of phosphorus in the soil and the low utilization rate of phosphorus fertilizers, the substantial increase in grain production is always accompanied by a large amount of phosphorus fertilizer input, which not only causes a waste of limited phosphorus fertilizer resources, but also inevitably leads to the increase of phosphorus concentration in the runoff, resulting in the enrichment of water ...

AI Technical Summary

Problems solved by technology

The medium culture method can be enriched to obtain a specific high-efficiency phosphorus-solubilizing strain, but the culture medium can only isolate 1% of the total number of microorganisms

However, due to the wide variety of phosphorus-solubilizing microorganisms and the different and complicated decomposition mechanisms, the high-efficiency phosphorus-solubilizing bacteria that can be obtained by this screening method are very limited. Because the change of niche affects its phosphorus-dissolving effect, it is difficult to guarantee the effect of phosphorus-dissolving bacterial fertilizer in the field

At present, the screening and production of phosphate solubilizing bacteria, especially those suitable for acidic soils, are very limited, and more and richer phosphate solubilizing bacteria resources need to be developed urgently

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