本文就禾谷类牧草与豆类作物对土壤K~+的竞争吸收问题进行了探讨。以往的一些文献指出,禾本科牧草竞争优势,与其较大的根系、较长的根毛和较大的根表面积有关。本文作者在田间条件下对黑麦草和红三叶草的根重,根密度,根的阳离子交换量,根表面积,根的长度与这两种牧草吸收钾之间的关系进行了研究,得出了与上述一致的结果。 This paper discussed the competition and absorption of cereal K + in cereal forages and leguminous crops. Previous literature indicates that the competitive advantage of grasses is related to their larger roots, longer root hairs and larger root surface area. The authors studied the relationship between root weight, root density, cation exchange capacity, root surface area and root length of ryegrass and red clover and their absorption of potassium under field conditions. The same result.