1) variation of pH value of soil
土壤pH值变化
2) soil pH value
土壤pH值
1.
The influence of plant N/P,soil pH value on wetland plant species richness;
植物N/P与土壤pH值对湿地植物物种丰富度的影响
2.
Spatial distribution and conditional simulation of soil pH values in small watershed of loessial gully region
黄土沟壑区小流域土壤pH值的空间分布及条件模拟
3.
The present paper deals with the relationship between the Al content in tea leaves and each of tea age and soil pH value.
探讨茶叶铝含量与叶龄及土壤pH值的关系。
3) pH value
土壤pH值
1.
Comparative studies on the pH value, organic matter, total N, exchangeable Ca and Mg, available K, P, B, Mo, Cu, Fe, Zn, Mn in the 0~20 cm soil layer among the 3 forests, Pinus massoniana forest(PMF), pine and broadleaf mixed forest(PBMF), and monsoon evergreen broadleaf forest(MEBF) which consists of a succession series in Dinghushan, south China show that the pH value in PMF soil(4.
比较研究了南亚热带鼎湖山森林群落演替序列中马尾松林、针阔混交林和季风常绿阔叶林表层(0～20cm)土壤pH值、有机质、全N、速效K、交换性Ca和Mg、有效P、B、Mo、Cu、Fe、Zn和易还原Mn等营养元素的含量及其相关关系,结果表明:马尾松林土壤pH值显著高于其它两森林土壤;随着群落的进展演替,养分在土壤中的累积(Ca除外)呈不断增加的趋势,即马尾松林<针阔叶混交林<季风常绿阔叶林;不同指标的累积呈现出持续增加(有机质、交换性Mg、有效B、Mo、Cu、Fe和易还原Mn)、持续递减(交换性Ca)、先增加再减少(有效P)和先减少再增加(pH值、总N和有效Zn)的4种变化形式;土壤养分元素的相关对对数以马尾松林最多。
4) Soil PH
土壤pH值
1.
Influence of Applying Calcium Cyanamide on the Soil pH,EC Value and Growth of Cucumber Seedlings;
施用氰氨化钙对土壤pH值·EC值及黄瓜生长的影响
2.
Effect of Soil pH Value on the Fruit Characters of Pyrus pyrifolia Nakai. cv. Whangkeumbae
土壤pH值对黄金梨果实品质的影响
3.
We measured soil pH,soil electrical conductance and germination parameters of cabbage seeds as screening means to screen out the proper krilium and their proportioning for effectively ameliorating alkaline soil.
2;种子发芽率,发芽势和发芽指数与土壤pH值有密切关系(p<0。
5) pH change
pH值变化
1.
The method relies on the sensitivity of the pH change observed after addition of different volumes of alkali to the presence of trace amounts of heavy metal ions.
该方法表明通过加碱测溶液pH值变化来反映溶液中痕量Cr3+离子是可行的。
2.
Our investigations reveal that the pH change is the key factor for this special crystallization behavior of boron in this system.
研究分析证明,油田卤水体系硼的特殊结晶行为与体系pH值变化密切相关。
补充资料：pH值变化试验
分子式：
CAS号：
性质：亦称酸碱度，是测定医用高分子材料溶出液化学惰性的方法，取溶出液与制备该溶出液的同批蒸馏水，用酸度计分别测试pH值，二者之差不超过1.5方为合格产品。
CAS号：
性质：亦称酸碱度，是测定医用高分子材料溶出液化学惰性的方法，取溶出液与制备该溶出液的同批蒸馏水，用酸度计分别测试pH值，二者之差不超过1.5方为合格产品。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条