Abstract: Taking pepper （Capsicum annuum Linn.） variety Erpao pepper as material, the effects of spraying amino acid microelement water-soluble fertilizer on the yield and quality of pepper were studied by using random block design and experiment in the field. The results showed that the yield and protein content of pepper treated with amino acid microelement water-soluble fertilizer and conventional fertilization were significantly higher than those treated with conventional fertilization, and the difference reached a statistically significant level, and the yield increased by 19.4%. It is suggested that large-scale spraying of amino acid microelement water-soluble fertilizer on the leaves should be promoted in pepper production.

Key words: amino acid microelement water-soluble fertilizer, capsicum （Capsicum annuum Linn.）, yield, quality