淮北砂姜黑土地区小麦施钾效应研究

Research on response of applying potassium fertilizer for wheat in Huaibei shajiang black soil area

在淮北砂姜黑土地区进行小麦钾肥用量的研究结果表明,施用钾肥有明显的增产作用,除千粒重和谷草比外,其他生物学性状都明显好于不施钾对照;小麦钾素营养吸收的差异主要表现于茎叶;农田钾素的盈余随钾肥用量增加而呈上升趋势。淮北砂姜黑土地区小麦施钾量适宜范围应控制在K2O40～80kg/hm2,建议施钾量K2O40kg/hm2。

The field experiment of wheat applying potassium fertilizer was carried out in Huaibei shajiang black soil area The results of research showed that application potassium fertilizer can increase yield of wheat obviously;and all kind of biological nature of wheat is better obviously than do not applying potassium fertilizer , except 1000 grain weight and the ratio of grain and straw; The difference of potassium nutrition absorbing be showed mainly by stem and leaf of wheat  The with increase of potassium fertilizer application rates, profit of potassium in farmland will rise; The proper range of potassium application rates of wheat ought be controlled to K2O 40～80kg/hm2, Suggesting application rates of potassium fertilizer ought be K2O 40kg/hm2 in Huaibei shajing black soil area