Dynamic change of dry matter accumulation and ralationship between artemisinin and nitrogen, phosphorus, potassium in Artomisia annua Leaf nitrogen and phosphorus stoichiometry in 80 herbaceous plant species of Songnen grassland in Northeast China Effects of nitrogen, phosphorus and silicon addition on leaf carbon, nitrogen, and phosphorus concentration of Elymus nutans of alpine meadow on Qinghai-Tibetan Plateau, China Effect of different levels of N supply on P accumulation characteristics of a ‘mining ecotype’ of Pilea sinofasciata Difference of Bleeding Intensity in Different Parts of Rice Plant and Its Relationship with Grain Plumpness Phosphorus and Nitrogen Interactions in Field-Grown Soybean as Related to Genetic Attributes of Root Morphological and Nodular Traits Effects of fertilization ratios of N, P, and K on yield and active ingredients of Angelica dahurica var. formosana from Sichuan Province Effect of Nitrate Reductase (NR) Inhibitor on NR Activity in Oilseed Rape (Brassica napus L.) and Its Relation to Nitrate Content Dynamic change of dry matter accumulation and ralationship between artemisinin and nitrogen, phosphorus, potassium in Artomisia annua Effects of fertilization ratios of N, P, and K on yield and active ingredients of Angelica dahurica var. formosana from Sichuan Province Effect of N, P, and K fertilizers on sclerotial formation and germination of southern blight of Coptis chinensis Effect of N, P, and K fertilizers on sclerotial formation and germination of southern blight of Coptis chinensis