The content and kind of phytoestrogens in red clover(Trifolium pratense L.) and white clover(T.repens L.)in spring were investigated with 2 red clover cultivars and 3 white clover cultivars in a field experiment.The results showed that the total phytoestrogen content in the above ground parts of red clover ranged 3.35×10~3~7.99×10~3μg/g,which was significantly higher than that in white clover ranged 0.57×10~2~3.81×10~2μg/g.There were phytoestrogens,formononetin,biochanin A,genistein and daidzein in leaves a...