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- Application of Integrated Fertility Index Method in Evaluating Changes in Soil Fertility. 应用指数和法对潮土农田土壤肥力变化的评价研究。
- Through field investigation and soil fertility index analysis, causes and mechanism of fertility degradation of black soil in the Songliao Plain were explored. 摘要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。
- Soil fertility index 肥力指数
- It's an effective way to maintain soil fertility. 这是保持土壤肥力的一个有效办法。
- How do earthworms influence soil fertility? 蚯蚓如何影响土壤肥力?
- Soil organic matter (SOM) distribution has obvious spatial differences as fertility index in grassland. 摘要作为草地土壤重要肥力指标的有机质，存在明显的空间差异。
- The results showed that the integrated fertility index (IFI) of the soil was respectively 0.579, -0.456 and -0.123 in the 21-, 29and 36-year-old plantations. 结果表明：1)21、29、36年土壤质量综合得分分别为0.;579、-0
- The soil fertility shows a decrease trend in cornpea rotation. 玉米、豆轮作，土壤养分均呈下降趋势。
- Influence of thinning on soil fertility in artificial forests. 抚育间伐对人工林土壤肥力的影响。
- The Impact of Soil Fertility on the Yield of Phyllanthus Emblica L. 土壤肥力对余甘子产量的影响。
- A green manure is a crop grown mainly to improve soil fertility. 种植绿肥作物主要是为使土壤更加肥沃。
- The sustainable fertility index (SFI) in different agroecosystems was discussed by integrating soil nutrients and biological indices. 运用土壤生物和养分指标讨论了不同农田土壤肥力可持续性指数。
- The correlation among soil microorganism quantity, enzyme activity and soil nutrient content is the significant, it can be used as evaluation index of soil fertility. 土壤微生物数量、酶活性与土壤养分间呈显著相关关系，可作为评价土壤肥力的指标。
- It is concluded that CPMI is a sensitive and practical index to reflect the impacts of agricultural measures on soil fertility and the dynamics of C pool variation. CPMI可灵敏地反映农业生产措施对土壤肥力、土壤碳库动态变化的影响。
- Strip check space varies with plot slope, soil fertility and irrigation. 条畦宽度随地块坡度、土壤肥力和灌溉而变化。
- The paddy?upland system increased clay dispersion content and soil fertility. 水旱轮作可增加土壤黏粒含量,提高高沙土肥力水平;
- The status of soil aggregates is an important factor affecting soil fertility. 土壤团聚体和水稳性团聚体的状况是影响土壤肥力的一个重要因素。
- The amount of microorganism shows positive correlation with the organic matter, indicating that the amount of microorganism can be an important index for appraising soil fertility. 微生物总数与土壤有机质呈正相关的结果表明，土壤微生物总量也可以作为评价土壤肥力的一个重要指标。
- According to the results of PCA, urease, alkaline phosphatase, and protease activity could be a better index to evaluate soil fertility in dry land than catalase and invertase activity. 根据主成分分析结果,旱地土壤肥力状况用脲酶、碱性磷酸酶、蛋白酶活性作为综合评价指标优于过氧化氢酶与蔗糖酶。
- Wheat-maize interplanting of both crops' high yield features shorter cycling period, higher multiple cropping index, stronger fertility exhaustion and no time for soil fertility to recover. 小麦-玉米套种两作产量皆高是以周期短、复种指数高、肥力耗竭强为特征，土壤肥力没有时间得以复原。
