【摘要】 对在2005～2006年间洛阳地区7个植烟县376个土壤样品的19项指标进行了测试分析,采用模糊数学隶属函数模型,对土壤肥力状况进行了综合评价。结果表明,洛阳烟区土壤养分肥力存在较广泛的变异,属于I级土壤肥力的面积较小,仅占该烟区总面积的2.40%;属于Ⅱ级,Ⅲ级和Ⅳ级土壤肥力的面积均较大,分别占总面积的18.40%,58.40%和20.80%。该区应注意严格控制氮素用量,减少钙、硫、锰等肥料的施用,同时增加有机肥用量,注意追施铁、锌、硼、钼肥料,以实现烟区土壤的养分平衡。更多还原

【Abstract】 19 nutrient indexes of 376 soil samples collected in seven tobacco-growing counties of Luoyang in 2005～2006 are analyzed.Based on principles of fuzzy mathematics and types of membership function,the comprehensive evaluation of soil fertility of Luoyang tobacco-growing areas is conducted.The results indicated that there exist significant variation for the soil fertility of Luoyang tobacco-growing areas.The area of grade Ⅰ is small,only accounted for 2.40% of the total Luoyang tobacco-growing areas.The areas of grade Ⅱ,grade Ⅲ and grade Ⅳ are large,and account for 18.40% 58.40% and 20.80% of the total areas,respectively.In this area we should control quantity of N element and reduce quantity of Ca,S,Mn fertilizer etc.,at the same time we should increase organic fertilizer and Fe,Zn,B and Mo fertilizer etc.,which would realize soid nutrient balance in Luoyang tobaco-growing areas.更多还原