忻府区土壤养分状况分析及其应用

Application of soil nutrient status in Xinfu

采用全球卫星定位系统(GPS)技术,对忻府区土壤进行了网格取样。通过对2627个土样的化验分析,结果表明,耕层土壤有机质、全N、速效P、速效K较第二次土壤普查都有所增加,其中增加值为有机质3.95 g/kg,全N 0.04 g/kg,速效P 8.73 mg/kg,速效K 9 mg/kg。针对土壤养分和目标产量的情况提出了相应的施肥方案,示范试验表明,平衡施肥对玉米有显著的增产作用,平均增产10%左右,节肥3.4%。

2627 soil samples in plow layer were collected from Xinfu by grid method and Global Position System （GPS） technology and they were analyzed with the methods suggested by the agricultural ministry. The result showed that the contents of soil organic matter, total nitrogen, available phosphorous and available potassium were higher than that of the second general detailed soil survey, and their increasing value was 3.95 g/kg, 0.04 g/kg, 8.73 mg/kg, 9 mg/kg, respectively. Recommendation fertilization amount was adopted depending on soil nutrients status and expected crop yield in this area, the fertilization experiment showed that recommendation fertilization had remarkable effects on increasing yield of maize by 10% reducing fertilizer by 3.4% on average.