新乡市土壤养分普查与监测结果比较及施肥对策分析

对新乡市2006~2008年测土配方施肥项目中普查化验的10 683个土壤样品的有机质、全氮、有效磷和速效钾含量进行了统计分析,并与2007~2009年的监测结果进行了对比,以验证新乡市施肥指导方针的正确性。结果表明:全市有机质、全氮、有效磷和速效钾含量分别为16.08 g/kg、1.02 g/kg、16.26 mg/kg和140.48 mg/kg,与监测结果基本吻合。并提出了新乡市应继续实行有机-无机肥料相结合,按产量水平施用氮肥,测土施用磷、钾肥的施肥方针。

Comparison between Soil Nutrient Investigation and Monitoring Results and Fertilizer Strategy in Xinxiang

The organic matter,total nitrogen,available phosphorus and available potassium of 10 683 soil simples in soil testing and fertilizer recommendation projects from 2006 to 2008 in Xinxiang were analyzed,which were compared with the monitoring results from 2007 to 2009.The results showed that the contents of organic matter,total nitrogen,available phosphorus and available potassium were 16.08‰,1.02‰,16.216 mg/kg and 140.480 3 mg/kg,respectively,which were basicly agree with the monitoring results.The fertilizer strategy was put forward including combining the organic fertilizer with inorganic fertilizer,applying nitrogen fertilizer based on the yield and applying phosphorus and potassium fertilizer by soil testing.