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４２份来源于神农架及三峡地区的菠菜品种的还原型维生素Ｃ，粗蛋白质和草酸含量范围（占鲜重）分别为４．８～２９．４ｍｇ／１００ｇ：２．１０～５．９３％：０．６４～１．４８％。与全国普遍栽培的４个品种比较，维生素Ｃ含量高的有５个品种；粗蛋白质含量高的品种１１个；草酸含量低的品种有７个。通过系统聚类，划为８个类群，第６、４、５、３类在不同方面和不同程度上表现出各自的优势。第８、７、１、２类的品质不甚理想。
The contents of reduced vitamin C, crude protein and oxalic acid in 42 varieties of spinach from Shennongjia and Three Gorges were 4.8 ~ 29.4mg / 100g: 2.10 ~ 5.93% .64 ~ 1.48%. Compared with the four cultivars commonly cultivated in the country, there were 5 varieties with high content of vitamin C, 11 varieties with high crude protein content and 7 varieties with low oxalic acid content. By systematic clustering, it is divided into 8 groups, and 6th, 5th, 5th and 3rd classes show their own advantages in different aspects and to different extents. The quality of the 8th, 7th, 1st, 2nd class is not ideal.