摘要
依据土壤分析结果，对宁夏南部山区五种类型土壤耕层中的硼、钼、锌、锰、铜、铁等六种微量元素丰缺状况进行分析评价，并讨论了耕地类型与微量元素有效含量的关系。在此基础上，设置田间试验，探讨各种微量元素人工添加对春小麦、胡麻、马铃薯三种主要旱地作物生长发育和产量的反应强度，并提出了相应的营养障碍克服途径，显著地提高了作物生产力和农田水分利用效率。
Based on the results of soil analysis,this paper evaluates the status ofcontents of 6 trace elements including B,Mo,Zn,Mn,Cu and Fe in tilth layer of 5 typesof soils in the southern mountain areas of Ningxia,and discusses the relation betweenthe types of cultivated farmlands and contents of available trace elements.Furthermore,on the basis of field experiments,this paper also approaches the reaction intensity ofgrowth and yield of 3 main dryland crops including spring wheat,flax and potato to theapplication of different trace elements,and suggests some ways to correct nutritive dis-trubance by which productivity of crops and water use efficiency of farmlands can be im-proved remarkably.
出处
《干旱地区农业研究》
CSCD
北大核心
1995年第4期107-112,共6页
Agricultural Research in the Arid Areas
基金
国家"八五"旱农攻关
关键词
土壤
微量元素
旱地
作物
水分利用效率
soil trace element
nutritive disturbance
soil analysis
dryland crop
water use efficiency
