人们早就知道氮、磷、钾可以增加农作物的产量,以后又发现硼、锰、钼、锌与作物生长密切相关,却很少有人了解稀土在蔬菜、瓜果上的妙用。稀土包括十七种元素,当前农业上使用的稀土主要是镧和铈元素的化合物,商品名叫“农乐”益植素,简称“农乐”。“农乐”系列增产素是天津市农科院土肥所经过多年田间试验、示范后,在确保增产及改善作物 It has long been known that nitrogen, phosphorus and potassium can increase the yield of crops. Later on, it was found that boron, manganese, molybdenum and zinc are closely related to crop growth. However, few people know the magical effect of rare earth on vegetables and fruits. Rare earth includes seventeen kinds of elements. The rare earth currently used in agriculture is mainly a compound of lanthanum and cerium. “Nongle” series of yield-increasing element is Tianjin Agricultural Science Institute of soil and fertilizer after many years of field trials, demonstration, to ensure increased production and improve the crop