红壤、砖红壤以及在这些土壤上发育的水稻土,都呈酸性或强酸性反应,在栽培水稻时,农民素有施用石灰的习惯。近年来这些地区种植大麦的面积日益扩大,例如浙江金华地区1978年大麦种植面积即达54万亩。但在大麦栽培上普遍存在早衰低产现象,这是否和土壤酸度有关?不同石灰物质对大麦生长的影响如何?为此,我们进行了以下三方面的工作。 Red soils, brick red soils, and paddy soils developed on these soils are all acidic or strongly acidic. In the cultivation of rice, farmers have the habit of applying lime. In recent years, the area of ​​growing barley in these areas has been expanding. For example, in 1978, barley planting area in Jinhua, Zhejiang Province reached 54 million mu. However, there is widespread premature decline and low yield in barley cultivation. Is this related to soil acidity? How are different lime substances affecting the growth of barley? To this end, we have done the following three aspects.