据研究,生产50公斤芝麻种子,需从土壤中吸收纯氮(N)4.5公斤、磷(P_2O_5)1.2公斤和钾(K_2O)5公斤。芝麻在开花结实期需氮钾肥较多,初花期至盛花期需磷肥较多。磷钾肥可促进根系发育。钾肥有加强植物机械组织的作用,应根据芝麻的需肥规律,科学施肥,从而提高芝麻产量。一、增施底肥。芝麻生育期短,对肥料要求比较集中,增施底肥,有利于改良土壤,促进根系发 According to the research and production of 50 kg sesame seeds, 4.5 kg of pure nitrogen (N), 1.2 kg of phosphorus (P 2 O 5) and 5 kg of potassium (K 2 O) should be absorbed from the soil. Sesame in flowering need more N, K, early flowering to flowering need more phosphate. Phosphorus and potassium fertilizer can promote root development. Potassium has the role of strengthening the mechanical organization of plants, should be based on the principle of fertilizer need sesame, scientific fertilization, thereby increasing sesame production. First, increase the base fertilizer. Sesame growth period is short, more concentrated fertilizer requirements, increase base fertilizer, is conducive to improving the soil and promote root hair