Biological organic matrix and preparation method thereof

The invention provides a biological organic matrix. The biological organic matrix aims at overcoming the defects of the prior art. A preparation method of the biological organic matrix comprises the following steps that S1, straw, bacterium resides, pine needles, pig mature, cornstalk heap clay fertilizer, rape seed cakes, walnut shells and nicotine are prepared; S2, the straw, bacterium resides,pine needles, pig mature and cornstalk heap clay fertilizer are adjusted until the water content is 70-80%; S3, after the mixture obtained in S2 is mixed, water is added to the mixture, then the mixture is placed in a sealed fermentation pool for fermentation, and a fermentation mixture is obtained after fermentation is completed; S4, the fermentation mixture is taken, the rape seed cakes and walnut shells are added to the fermentation mixture and smashed, the mixture is evenly mixed, and an airing mixture is obtained under the natural condition; S5, after nicotine is added to the obtained airing mixture and the mixtu