宁南山区不同土地利用方式土壤酶活性特征研究 关键词 土壤酶活性 土地利用方式 剖面分布 肥力指标 [gap=1415]Key words Soil enzyme activity，Land use model，Profile distribution，Fertility index
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... 生理生化变化 physiochemical changes 生育指数 fertility index 计算机辅助研究 computer aided research ...
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Integrated Fertility Index 耕地地力综合指数
endometriosis fertility index 生育指数 ; 育指数 ; 指数
soil fertility index 土壤肥力指标
fertility index method 肥力指标法
sustainable fertility index 肥力可持续性指数
soil fertility index system 土壤肥力指标体系
integrated soil fertility index 综合指标值
Fertility conversion index 育性转换指标
general fertility comparative index 一般生育比较指数
At present, in formulated fertilization the balanced fertilization method and soil fertility index method are widely utilized at home and abroad.
平衡施肥法和土壤肥力指标法是目前国内外普遍采用的两种测土配方施肥方法。
Through field investigation and soil fertility index analysis, causes and mechanism of fertility degradation of black soil in the Songliao Plain were explored.
通过田间调查和土壤肥力指标分析，探讨了松辽平原玉米带黑土肥力退化的原因和机理。
Results showed that the Integrated Fertility Index (IFI) of orchard soil in red earth regions of Guangxi were between 0.17 to 0.25 and belong to mid-low level.
结果表明，广西红壤果园土壤肥力综合指标值(ifi)在0 17 ~ 0 25之间，果园土壤肥力属中下水平。
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