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研究了不同浓度的多胺（尸胺、腐胺和亚精胺）对水稻种子萌发幼苗生长的化感作用结果表明．外源多肢对水稻种子萌发和幼苗生长均有抑制作用，尤其是对根的抑制，其作用程度依次为亚精胺＞腐胺＞尸胺，但是外源多胺能显著地提高水稻幼苗的抗冷性．使用灭菌土壤和用蒸馏水、Ｎａ２ＥＤＴＡ和盐酸水溶液浸取的实验结果表明，尸胺进入土壤后，大部分被土壤吸附和络合而滞留，少部分自由存于土壤中，在络合剂和酸存在下，尸胺可从土壤中解脱
The allelopathic effects of different concentrations of polyamines (cadaverine, putrescine and spermidine) on the growth of rice seed germination seedlings were studied. Exogenous multi-limbs had inhibitory effects on seed germination and seedling growth of rice, especially on root inhibition, with the order of spermine> putrescine> cadaverine, but the exogenous polyamines could significantly increase the seedling growth Cold resistance. The results of experiments using sterilized soil and leaching with distilled water, Na2EDTA and aqueous hydrochloric acid show that after the cadaverine enters the soil, most of it is retained by the soil for adsorption and complexation and a small part is free to exist in the soil. When the complexing agent and the acid In the presence of cadaverine can be released from the soil