Effect Study of Continuous Monoculture on the Quality of Salvia miltiorrhiza Bge Roots

Table 3

Effects of continuous cropping soil on Salvia miltiorrhiza hydrophilic compositions (, ).

Groups	Contents (%)
	Danshensu sodium	Rosemary acid	Lithospermic acid	Salvianolic acid B	Total content
Control	A	A	A	A	5.218
1-year continuously cultivated soil	B	B	B	B	4.982
2-year continuously cultivated soil	B	C	B	C	4.976
3-year continuously cultivated soil	B	A	C	B	2.771
4-year continuously cultivated soil	B	D	D	D	2.809

Note: the values denoted by different letters within the same column represent significant difference at the 0.05 level as compared with various concentration treatment groups.