摘要
从长春市4个保护地蔬菜重点产地采集具有代表性蔬菜地的土壤样品,对土壤有机质、全氮、碱解氮、全磷、速效磷、全钾、速效钾的状况进行分析。结果表明,长春蔬菜保护地土壤的养分含量均高于露天蔬菜地,且随着种植年限的增加而增加。长春市蔬菜保护地土壤有机质含量为11.58-27.35 g·kg-1,含量指标在低、中范围;全氮含量在1.63-3.44 g·kg-1之间,含量指标在高、极高范围,随着种植年限的增加,碱解氮增长幅度较高;速效磷含量在49.38-250 mg·kg-1之间,处于极高范围;速效钾含量在108.8-292.3 mg·kg-1之间,处于中量范围。表明长春市蔬菜保护地土壤氮素、磷素过剩,并产生逐年积累现象。各区土壤养分含量变化各异,应因地制宜,采取相应的措施来进行肥力调控。
Representative soil samples were collected from four protected vegetable production areas of Changchun. The soil organic matter, total nitrogen, available nitrogen, nitrate nitrogen, total phosphorus, available phosphorus, total potassium and available potassium were analyzed. The results showed that the soil nutrients content of protected vegetable soil were higher than the open field, and they increased with the increasing of planting years. The soil organic matter content was between 11.58 - 27.35 g. kg-1, mainly belong to low and intermediate level. The total nitrogen content was between 1.63-3.44 g. kg-1, mainly belong to high and very high level. The growth rates of available nitrogen and nitrate nitrogen increased with the increasing of planting years. The available phosphorus content was between 49.38-250 mg-kg-1, mainly belong to very high level. The available potassium content was between 108.8-292.3 mg. kg-1, mainly belong to intermediate level. The N and P of vegetable soil were excess and accumulated year by year. There were differences of soil nutrients content in soil of different region. We should adapt to local conditions and apply corresponding measures for fertility regulation.
出处
《东北农业科学》
2016年第1期54-58,共5页
Journal of Northeast Agricultural Sciences
基金
吉林省世行贷款农产品质量安全项目(2011-Z17
2011-Z15)
长春市科技计划项目(11NS08)
关键词
蔬菜保护地
土壤养分
评价
Protected vegetable soil
Soil nutrients
Evaluation
