黑水城文献《掌中珠》《杂字》在记载粮食作物时,录有豌豆;西夏文法典《天盛律令》中豌豆是京城五郡县之一华阳县要交纳的税粮,以往译文误作黄豆,通过形、音、义三方面的比较改为豌豆;不仅西夏时期的文献,而且在敦煌文书中也有提到;辽从后唐旧制,为西夏以豌豆征税提供佐证。 He Shicheng literature “Palm in the palm” “miscellaneous” in the record of food crops, recorded peas; Western Xiawen Code “Tian Sheng law” Peas is one of five counties in Huayang County to pay the tax food, the previous translation error For the soybean, through the comparison of the three aspects of shape, tone and meaning, it was changed to pea; not only the documents in the Western Xia Dynasty, but also in the Dunhuang documents; Liao provided the evidence for taxing the pea in the Western Xia from the old system in the later Tang Dynasty.