论采用土壤养分相对含量计算施肥量之方法  

Method for Calculating Fertilizer Dosage According to Relative Nutrients Content in Soil

作　　者：王剑峰[1] 

机构地区：[1]吉林省土壤肥料总站,长春130012

出　　处：《吉林农业科学》2011年第3期27-29,共3页Journal of　Jilin Agricultural Sciences

摘　　要：本文分析了美国土壤学家斯坦福(Stanford)提出的养分平衡目标产量法公式存在的理论错误,指出了采用土壤养分绝对含量计算施肥量存在的问题,构建了相对量法施肥模型。从理论上揭示了土壤测试值与推荐施肥量的内在关系。本模型避开了土壤养分利用系数和肥料利用率这两个参数,提出并使用了区域平均测土值对应适宜施肥量参数(Fp)、区域平均测土值参数(Tp)和单位测土值肥差通用系数(D)3个稳定的参数。Errors in balanced nutrition according to yield objectives put forward by Stanford in the US were analyzed in the paper.Problems in calculating fertilizer dosage according to relative nutrients content in soil were pointed out and relative fertilizer model was constructed.Interior relationship between soil testing value and recommend fertilizer dosage was explained theoretically.In this model,soil nutrients utilizing index and fertilizer utilizing index were avoided,and three stable indexes were adopted,i.e.,Fp,Tp and D.

关 键 词：土壤养分 施肥量 方法 

分 类 号：S147.3[农业科学—肥料学]