Determination of the nutrion components and pesticide residues of green vegetables North Mountainous region in Jinhua City Dynamic Changes of Carbohydrate and Vitamin C in Fruits of Actinidia chinensis and A.eriantha during Growing Season Analysis and Evaluation of Nutritional Components of Floccularia luteovirens in Tibet Plateau Annual Dynamics of Nutritive Components in the Leaves of Hippophae rhamnoides subsp. sinensis Growing on the Tidal Flat of Yancheng