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土壤是一个开放系统,随着农村商品经济发展和农作物产量的提高,土壤中某些植物营养元素的亏缺问题,日益突出。本文主要介绍我们在研究徐淮花碱土地区钾素状况及棉花钾肥效应方面的一些阶段性研究结果。这项研究工作是在睢宁县王集花碱土综合治理实验区的基点进行的。王集乡位于徐州市睢宁县西北部废黄河的南岸,土壤为由黄泛冲积物发育而成的黄潮土,是砂土、二合土和花碱土相间分布的地带。近年来,每到8月底9月初,即有不少棉田早衰落叶,严重影响棉花产量和质量的提高。为了查清实验区土壤钾素状况,为大面积推广施用钾肥作准备,进行了本试验.
Soil is an open system. With the development of rural commodity economy and the increase of crop yield, the deficiency of nutrient elements in some plants in soil has become increasingly prominent. This article mainly introduces some of the results of the staged research on the status of potassium in Xuhuaihua alkaline soil and the effect of potash fertilizer on cotton. This research work was carried out in the basic point of Wangjihua alkaline soil comprehensive experiment zone in Suining County. Wang Jixiang is located on the south bank of the waste Yellow River in the northwestern part of Suining County, Xuzhou City. The soil is yellow-tide soil developed from the yellow-pan alluvial sediments and is a strip of sand, loam and alcalic soil. In recent years, at the end of each month of August and early September, many early decline leaves of cotton fields have seriously affected the yield and quality of cotton. In order to find out the status of soil potassium in the experimental area and to prepare for the large-scale promotion and application of potassium fertilizer, this experiment was carried out.