摘要
为全面了解河南省油菜产区目前土壤中、微量营养元素丰缺状况,在河南主产油菜区采集了有代表性的油菜不同生育时期的土壤样品,并对其中微量营养元素含量和有机质状况进行分析,结果表明,试验区田块有机质较高,平均值22.35g/kg,达到1级标准。不同地点和不同生育时期中量元素硫均不缺乏,平均为26.87mg/kg,高于中等标准。不同地点和不同的生育时期微量元素铜均不缺乏,平均值为4.65mg/kg,高于中等标准。锰、铁含量平均值分别为139.94mg/kg和205.27mg/kg,达到中等或者上等标准。而土壤有效锌不同的土壤样品含量差异较大,土壤有效锌平均值2.79mg/kg,总体上属于中等水平,但部分试点严重缺乏,比如光山县含量最低为0.74mg/kg。有效铜、有效锰、有效锌含量随着油菜生育时期的推移逐渐降低,特别是有效锌、有效锰含量呈直线降低趋势。因此,为保证油菜的正常生长,并防止土壤缺乏锰和锌,油菜应施用一定量的锰、锌微肥,尤其是部分缺锌的土壤,要重视施用锌肥。
In order to comprehensively understand the situation of soil secondary trace elements and organic matter in rapeseed-growing areas of Henan province,the soil samples at different development stages of rapeseed were collected and analyzed.The results indicated that the organic matter in rapeseed-growing areas was sufficient,with 22.35 g/kg in average and reaching the first class.The available secondary element sulfur（S） was also sufficient.Its average content was 26.87 mg/kg,higher than mid-standard.The available copper（Cu） was rich.Its average content was 4.65 mg/kg,also higher than mid-standard.Manganese（Mn） and iron（Fe） were all not deficient in different locations and different growth stages.Their average contents were 139.94 mg/kg and 205.27 mg/kg,respectively,up to the middle or upper standards.The content of effective zinc（Zn） in different soil samples was quite different,and part of locations was seriously deficient.Its average content was 2.79 mg/kg,belonging to moderate type generally.The contents of available Cu,Mn and Zn were gradually decreased with growth period,especially the contents of available Zn and Mn,which were sharply decreased.Therefore,Zn and Mn fertilizers as base fertilizers must be increased in rapeseed production,especially for the shortage soil.
出处
《河南农业科学》
CSCD
北大核心
2011年第11期63-66,共4页
Journal of Henan Agricultural Sciences
基金
国家现代农业产业技术体系建设专项资金(CARS-13)
国家"十二五""863"重点计划(2011AA10A104)
河南省重大科技攻关计划(072101110300)资助
关键词
油菜
中、微量元素
锌
锰
硫
铜
铁
Rapeseed
Secondary and trace element
Zinc
Manganese
Sulfur
Copper
Iron
