Based on these, the deficiency and research directions of further utilization of fly ash are presented.
在此基础上指出了粉煤灰精细利用的不足和研究方向。
Exploring the utilization of different fraction of P by different plants which could secrete different LMWOA under the condition of P-deficiency.
栽种能够分泌不同有机酸的植物，考察不同植物对土壤不同组分无机磷的活化利用情况；
It could overcome the irrigation difficulty of water deficiency throughout history to popularize the technique of rainwater accumulation and utilization.
雨水集流利用工程的推广，解决了干旱山区有史以来无水灌溉的难题。
Observations on the utilization of spirulina as an adjuvant nutritive factor in treating some diseases accompanied by a nutritional deficiency.
观察利用螺旋藻作为辅助营养因子治疗某些疾病及营养缺乏症。
The results show that the main causes of small-old trees are the soil water deficiency, the low water utilization rate and the low fertility in soil.
研究结果表明，形成小老树的主要原因是土壤水分亏缺、水分利用率低和土壤肥力不足。
The results show that the main causes of small-old trees are the soil water deficiency, the low water utilization rate and the low fertility in soil.
研究结果表明，形成小老树的主要原因是土壤水分亏缺、水分利用率低和土壤肥力不足。
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