氮、磷、钾对黄连植株生长、小檗碱含量的影响

Effect N,P and K on Growth and Contents of Berberine in Rhizome of Coptis chinensis Franch.

氮、磷、钾缺乏都大大影响黄连植株的正常生长，叶片硝酸还原酶的活性和根茎小檗碱的含量都很低。尤其是缺氮植株生长最差，死苗也多；缺磷、缺钾植株长新叶少而小，缺钾植株新根生长少且易衰老。

It has been found out that the normal growth of Coptis chinensis is heavily affected and both NRA in leaves and berberine contents in rhizome are very low when seedlings are short of nitrogen,phosphorus and potassium. The plants grow especially worse and most of them soon die off when nitrogen is short .The new leaves are smaller both in number and size when phosphorus and potassium are short.Few roots can grow up and easily get old in the solution short of potassium.