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钾是作物必须的三大营养元素之一,钾素营养状况好坏、对农作物生长发育影响甚大,因此在缺钾土壤上合理增施钾肥有着极其明显的增产作用。为了探索我区不同土壤上施用钾肥的增产效果和寻求合理的施用技术,一九八二年结合土壤普查成果应用,我们特组织铜仁、松桃、印江、德江、思南、石阡等县进行了水稻钾肥施用技术试验。试验结果表明各试点施用钾肥都得到不同程度的增产,平均比对照增产15％,最高的增产30.8％,最低的增产0.25％,每斤氯化钾增
Potassium is one of the three essential nutrients for crops. The status of potassium nutrition is very good and has a great impact on the growth and development of crops. Therefore, it is extremely significant to increase the yield of potassium fertilizers reasonably on potassium deficiency soils. In order to explore the yield-increasing effect of applying K fertilizer to different soils in our district and to seek reasonable application techniques, in 1982, in combination with the results of soil census, we organized Tongren, Songtao, Yinjiang, Dejiang, Sinan and Shiqian counties Carried out the technology of rice potash application test. The results showed that each application of potash fertilizer had different degrees of increase, with an average increase of 15% over the control, the highest increase of 30.8% and the lowest increase of 0.25%