1) index of K deficit
缺钾指标
1.
A 15-year fertilization experiment was conducted on an aquic brown soil to study the variations of its K fertility and the index of K deficit under different fertilization systems.
通过在潮棕壤上进行的15年定位试验研究了不同施肥制度下钾素肥力变化和土壤缺钾指标。
2) shortage index
紧缺指标
3) abundance index
丰缺指标
1.
Soil nutrient abundance index of Wugong, Fufeng and Guanzhong Areas were established initially; and fertilizer effect functions were applied to calculate the average optimum fertilizer recommendation rate of different fertility levels; Soil nutrient abundance index of Guanzhong Areas was applied to evaluate the soil nutrient of Guanzhong Areas.
本文对五个县的“3414”试验结果进行分析,初步制定了武功县、扶风县以及关中地区的土壤养分丰缺指标体系;并利用肥料效应函数模型计算出了关中地区不同养分分级范围内的平均推荐施肥量;同时根据制定出的关中地区的土壤养分丰缺指标对关中地区的土壤养分状况进行了评价。
4) double gaps
双缺口指标
5) potassium deficiency
缺钾
1.
Effect of nitrogen,phosphorus and potassium deficiency on change of morphology and physiology in petunia plants;
矮牵牛缺氮、缺磷、缺钾植株的形态和生理指标的变化
2.
Effect of potassium deficiency on absorption of Fe, Mn, Cu and Zn in ginger;
缺钾对生姜吸收铁锰铜锌的影响
3.
As modern cotton varieties including Bt (Bacillus thuringiensis) transgenic cotton are adopted and the yield per unit area continues to increase,potassium deficiency is occurring at a rising frequency in many cotton-growing countries.
随着棉花新品种特别是转 Bt Bacillus thuringiensis 基因抗虫棉应用于生产和单位面积产量不断提高 ,棉花缺钾现象在许多植棉国家已越来越普遍和严重 。
6) shortage index of water resource
水资源紧缺指标
补充资料:养分丰缺指标施肥法
分子式:
CAS号:
性质:合理施肥技术方法之一,根据土壤养分测定值与作物产量(或吸收养分量)之间存在较好相关性原理,通过肥效试验,将多点的土壤养分测定值和其相对应的相对产量(空白区产量/全肥区产量×100%),按照国际通用标准,确定该地区某种作物的土壤养分丰缺指标,不同土壤养分丰缺状况反映出施用该肥料的不同增产效果,从而确定合理施肥量和养分配比。
CAS号:
性质:合理施肥技术方法之一,根据土壤养分测定值与作物产量(或吸收养分量)之间存在较好相关性原理,通过肥效试验,将多点的土壤养分测定值和其相对应的相对产量(空白区产量/全肥区产量×100%),按照国际通用标准,确定该地区某种作物的土壤养分丰缺指标,不同土壤养分丰缺状况反映出施用该肥料的不同增产效果,从而确定合理施肥量和养分配比。
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参考词条