摘要
在苹果优生区洛川县域范围内,选取管理措施不同的果园采集土壤样品,对其土壤有机质、全量N、P、K及速效养分和微量元素进行了等级分布研究。分析结果表明,洛川果园土壤有机质、全氮、碱解氮属于偏低水平;土壤有效磷变异大,部分果园有累积现象,土壤速效钾含量丰富。微量元素铁、锰、铜、锌较缺乏,相对而言,缺锌程度最大;土壤有效铜变异较大。土壤有机质与全氮、碱解氮和有效磷呈极显著正相关,与有效铁、有效锌呈显著正相关,与有效铜、有效锰的相关性较低;苹果园产量随着土壤有机质含量的增加而增多。
In Luochuan County ,Shaanxi province where was a suitable growing area of apple ,different orchards were chosen to analyze the grade of soil organic matter ,total N ,total P ,total K ,available nutrients and trace elements . The results showed that the levels of soil organic matter ,total N and available N were low ;the coefficient of variation （CV ） of soil available P was high ,and it was accumulated in some orhards ;the content of soil available K was high . The content of trace elements such as Fe ,Mn ,Cu and Zn was low ,in which the shoratge of Zn was most remarkable , and the CV of soil available Cu was relatively high .The soil organic matter was very significantly correlated with total N , available N and available P ,and was significantly correlated with available Fe and Zn ,but was not significantly correlat-ed with available Cu and Mn .The yield of orchards increased with the increase of soil organic matter content .
出处
《干旱地区农业研究》
CSCD
北大核心
2013年第5期179-185,共7页
Agricultural Research in the Arid Areas
基金
十二五科技支撑计划资助课题(2012BAD14B11)
陕西省科技统筹计划项目(2011KTDZ02-01)
