摘要： 为砂姜黑土区小麦测土配方施肥技术的推广提供技术支撑。2004-2008年连续4年在砂姜黑土区进行小麦肥料效应田间试验,并利用土壤样品分析方法(ASI方法)对土壤样品进行测试分析,同时以施氮磷肥处理区(即缺钾素区NP)冬小麦产量占推荐施氮磷钾肥区(NPK)冬小麦产量的相对产量百分数,划分为4个梯度:<50%、50%～75%、75%～95%和>95%,将小麦产量的相对产量百分数所对应的用ASI方法分析的土壤有效钾测试值分成"极低"、"低"、"中"和"高"4级,两者建立相关性。砂姜黑土区麦田土壤运用ASI方法测定的土壤有效钾测试值与小麦相对产量百分数呈显著正相关关系。根据小麦相对产量百分数的划分区间,对应土壤有效钾测试值分级指标,可以得出,砂姜黑土区麦田土壤有效钾测试值"极低"指标范围为<67.4mg/L,"低"指标范围为67.4～97.1mg/L,"中"指标范围为97.1～130.0mg/L,"高"指标范围为>130.0mg/L。在上述4级指标下,小麦推荐施钾量依次为:150,120,90,45kg/hm2。砂姜黑土区麦田土壤运用ASI方法测定的土壤有效钾测试值与小麦相对产量百分数呈显著正相关关系。根据此分析方法建立的麦田土壤养分丰缺指标,完全可以指导砂姜黑土区小麦生产中的测土配方施肥实践。
关键词:
小麦,
ASI土壤分析方法,
土壤有效钾,
丰缺指标
Abstract: To provide theoretic support forWheat Production of Formula Fert ilization by soil testing in Shajiang Black So ilAreas. Field Experiments on Fertilizer E fficiency of winterwheat were carried in Shajiang Black So ilAreas. This study used AS I(Agro Services In ternationa l)method to test soil samples and calibrate ASI soil test according to the typical response categories( 50%, 75%, 95% of relat ivey ield to soil nutrient values) to estab lish the abundance and deficiency ind ices of soil ava ilab leK forwheat in Shajiang Black So ilA reas based on ASI soil testing and fert ilizer recomm endation. The very low, low, med ium, and high index for soil available Kwere< 67.4 mg/L, 67.4 - 97.??1 mg/L, 97.??1- 130.??0 mg/L, and> 130??.0mg/L, respectively. This experiment suggested that the recommended fert ilizer quantity were 150, 120, 90, and 45 kg/ha.
Key words:
Wheat,
ASI,
Potassium,
Abundance and deficiency indices
中图分类号:
孙克刚, 李丙奇, 和爱玲. 砂姜黑土区麦田土壤有效钾施肥指标及小麦施钾研究[J]. 华北农学报, 2010, 25(2): 212-215. doi: 10.7668/hbnxb.2010.02.042.
SUN Ke-gang, LI Bing-qi, HE Ai-ling. Abundance and Deficiency Indices of Soil Available K for Wheat and Fertilization Recommendation in Shajiang Black Soil Areas[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(2): 212-215. doi: 10.7668/hbnxb.2010.02.042.