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沧县对所取3300个土壤样品进行了速效N、P、K、有机质、PH值等土壤养分的化验分析,取得有效数据40000余个,结合田间肥效试验结果、农户调查结果及本县实际情况,制定了沧县冬小麦、玉米施肥指标体系,技术指标规范,应用效果明显,基本涵盖了本县不同作物,不同生产水平的需要,对指导我县农业生产具有重大意义。1沧县土壤养分状况1.1全县耕地土壤有机质平均值在11.6g/kg,属中等偏下水平(10g/kg为低含量,10~25g/kg为中含量,25g/kg以上为高含量)。含量变幅在
Cangxian 3300 soil samples taken from the analysis of available N, P, K, soil organic matter, PH value of soil nutrients and obtained more than 40,000 valid data, combined with field fertilizer test results, the survey results of farmers and the actual situation in the county , Developed Cangxian winter wheat and maize fertilization index system, technical specifications, the application effect is obvious, basically covering the different crops in the county, the different levels of production needs, to guide the county agricultural production of great significance. 1 Cangxian Soil Nutrient Status 1.1 The average of soil organic matter in cultivated land in the county is 11.6g / kg, belonging to the middle-lower level (10g / kg for low content, 10 ~ 25g / kg for medium content and 25g / kg for high content) . Change in content