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早在三十年代国外学者的研究就曾指出,稀土对甜菜的生育有良好影响。到了六十年代初,学者们的研究又进一步指出,甜菜是对稀土最敏感的作物之一。1983～1984年我们曾就稀土对甜菜的增产增糖效果问题进行过多点联合试验,基本上确定了稀土的作用,为了验证这一结果的可靠性,比较不同施用方法的效果,并确定各种施用方法的适宜剂量,我们于1984年进行了砂培试验和田间试验,现将结果报导如下。
As early as the thirties, foreign scholars have pointed out that rare earths have a good effect on the growth of sugar beet. By the early 1960s, scholars’ research further pointed out that beets are one of the most sensitive crops to rare earths. From 1983 to 1984, we conducted an excessive amount of joint experiments on the effect of rare earth on the yield and sugar gain of sugar beet, and basically confirmed the effect of rare earth. In order to verify the reliability of this result and compare the effects of different application methods, The appropriate dose of application methods, we carried out in 1984, sand culture and field trials, the results reported below.