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为充分了解项目区的土壤养分肥力状况,结合作物生物学特性,做到因土施肥,对辽宁省沈阳市辽中县4400.00hm2的无公害生产基地土壤进行采样、分析土壤中有效氮、速效磷、速效钾、有机质含量。分析结果显示:有效氮、速效磷含量大部分偏高,有机质含量大部分处于中等,速效钾含量中等偏低;土壤养分变化较大,含量分布不平衡,尤其是速效磷、速效钾和有机质表现更为明显。在统计数据的基础上,结合土壤耕作措施进行肥力评价,提出施肥建议,指导无公害项目区的农业生产。
In order to fully understand the status of soil nutrient and fertility in the project area and combine with the biological characteristics of crops, soil samples of 4400.00hm2 pollution-free production base in Liaoning Province, Liaoning Province were sampled for soil fertilization. The contents of available nitrogen, available phosphorus , Available potassium, organic matter content. The results showed that the content of available nitrogen and available phosphorus was mostly high, the content of organic matter was mostly medium and the content of available potassium was moderately low. The content of soil nutrient was greatly changed and the content was unevenly distributed, especially the content of available phosphorus, available potassium and organic matter More obvious. Based on the statistical data, the fertility evaluation based on soil tillage measures was put forward, and fertilization recommendations were put forward to guide the agricultural production in the pollution-free project area.