稀土包括镧、铈、镨等14种元素,具有促进作物对氮、磷、钾和其他微量元素的吸收,增加植物体的叶绿素,提高光合强度等功能。为了探明稀土对我省花生、大豆的效应,与有关单位协作,从1982—1984年,在宁陵、睢县、商丘、兰考、开封、尉氏、长垣、清丰、新郑、周口、正阳等县进行了一系列的田间试验,并在本所进行了盆栽试 Rare earth including lanthanum, cerium, praseodymium and other 14 kinds of elements, with crop nitrogen, phosphorus, potassium and other trace elements to absorb, increase plant chlorophyll, improve photosynthesis and other functions. In order to prove the effect of rare earth on peanut and soybean in our province, with the cooperation of relevant units, from 1982 to 1984, in Ningling, Juxian, Shangqiu, Lankao, Kaifeng, Weishi, Changyuan, Qingfeng, Xinzheng, Zhengyang and other counties conducted a series of field trials, and carried out in our pot test