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Abstract By applying the method of water culture with 1/2 Hoagland solution,this paper
studied the autotoxicity of pepper plants’ fermentation broths and allelopathy regulation
on it by gingko leaves’ fermentation broths and decomposition solutions that the
fermentation broths were decomposed again after the leaves were removed.The results showed
that under the autotoxicity of pepper plants’ fermentation broths,their root vigors were
declined and the relative conductivity was aggrandized.Gingko leaves’ fermentation broths
enhanced the autotoxicity of pepper plants’ fermentation broths,and showed positive
correlation with its concentration.Gingko leaves’ decomposition solutions have alleviated
the autotoxicity of pepper plants’ fermentation broths.The alleviated effects depend on
the concentration of gingko leaves’ decomposition solution.
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