在农业生产中,科学、合理的施肥技术,不仅能供给作物充足的养分,而且能提高肥料的经济效益,达到“高产、优质、高效”的目的。作物合理施肥主要根据以下因素决定:1 看作物种类施肥 各种作物对各种养分的需求不同。水稻、小麦、玉米等粮食作物对氮素需要量较多;豆科作物、甘蔗、甜菜、马铃薯、甘薯、棉花对磷和钾需要量较多; In agricultural production, scientific and reasonable fertilization techniques can not only provide enough nutrients for crops, but also increase the economic benefits of fertilizers and achieve the purpose of “high yield, high quality and high efficiency”. Reasonable fertilization of crops is mainly based on the following factors: 1 As the crop species Fertilization Various crops on the nutrient needs of different. Crops such as rice, wheat and corn require more nitrogen; and leguminous crops such as sugarcane, sugar beet, potato, sweet potato and cotton require more phosphorus and potassium;