【摘要】 本文经过四年的试验及多次的土壤调查,科学地总结出武威市川区土壤养分存在的问题是缺磷、少氮、有机质较缺。而物理性状(除土壤板结外)基本是良好的土壤物理构造。依理化现状和试验结果,提出农田土壤四级肥力指标。根据该论断可为武威市制定农业区划,进行农、林、牧合理布局,建设高产稳产农田的改土和培肥(特别是施用化肥)提供了科学依据.更多还原

【Abstract】 A 4-year experimental field study and soil investigations were conducted to determine the problems of lacking in phosphorus,nitrogen and organic matter in flat land,Wuwei County.The physical structure of the soil basically showed favourable characteristics except for hardening.According to the results,a 4-class fertility index is put forward regarding as a scientific basis for mapping out agricultural divisions, plunging the agriculture,forestry and animal husbandry in to rational layout,establishing higher and stabler crop land by means of improvement of soil and development of ferti- lity.更多还原