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1)  hilly area of purple soil in Sichuan basin
盆地紫色丘陵
2)  purple hilly land
紫色丘陵地
1.
Present situation and strategies for eco-agriculture development on purple hilly land;
紫色丘陵地生态农业发展现状与对策
3)  sloped land
紫色丘陵
4)  Purple hilly region
紫色丘陵区
1.
Soil basic feature of erosive chain in purple hilly region and its relation to soil erosion;
紫色丘陵区侵蚀链的土壤基本性状及与侵蚀的关系
2.
This paper was funded by the project“973”, the process of soil erosion and regulation in main China water erosion region, as Yan Ting as study area which is purple hilly region.
本文在“973”项目——中国主要水蚀区土壤侵蚀过程与调控研究的支持下,以典型紫色丘陵区盐亭县为研究区,基于1:50000地形图、ALOS遥感数据等,利用遥感与地理信息系统技术,以水利部《土壤侵蚀分类分级标准》(SL190-2007)为标准,建立了土壤侵蚀强度分级图,运用地学信息图谱思想,结合景观格局指数分析的方法,分析探讨了土壤侵蚀景观的格局特征,同时分析了土壤强度景观的垂直分布规律和水平分布规律。
5)  purple hilly area
紫色丘陵区
1.
Preliminary study on spatial distribution of soil erosion in a small watershed in purple hilly area using ~(137)Cs tracer;
紫色丘陵区小流域土壤侵蚀产沙空间分布的~(137)Cs法初步研究
2.
Impacts of Eulaliopsis Binata Hedgerow System on Soil and Water Losses in Purple Hilly Area, SW-China;
紫色丘陵区蓑草植物篱防治水土流失的效应及机理
3.
In a small watershed of purple hilly area, Sichuan province, the erosion-sediment sections were marked out basing on differences of topographic and soil features, and the characteristics of soils particle component as well as its fractal dimensions were also studied on the routine analyzing results.
以四川紫色丘陵区小流域为例,根据地形部位及土壤性状划分出侵蚀沉积纵横断面,分析其侵蚀沉积特征,并采集土壤样品研究其颗粒组成和分形维数特征。
6)  purple soil hills
紫色土丘陵
1.
The Benefit Analysis of Agriculture Ecology Engineeringin the Purple Soil Hills of Middle Hunan—— Taking Gonglian Village Tanzishan Town of Hengnan County for Example;
湘中衡阳盆地紫色土丘陵岗地分布广泛,这里普遍植被稀疏,水土流失严重,部分地区甚至基岩裸露,土地荒芜,呈现红色荒漠化现象。
补充资料:氨基紫色酸
分子式:C8H8N6O6
分子量:284.19
CAS号:3051-09-0

性质:红紫色粉末。能与许多阳离子形成各种颜色的络合物,其水溶液呈深紫色,在碱性溶液中呈深蓝色,如与钙离子结合呈红色,在酸性溶液为无色。微溶于冷水,水溶液极易变质,不溶地醇和醚。

制备方法:将10g三氧化铬、4g水和40g冰乙酸加热溶解,冷却至30℃,分批慢慢加入16g巴妥酸,控制反应温度45-50℃。加毕,在50℃保温半小时,放置过夜,加入10g冰乙酸,滤集结晶物。取4g结晶物与8g水混合加热溶解,滤去不溶物。滤液移入乙酸铵-冰乙酸溶液中通氨,析出结晶,过滤,用沸乙醇洗涤,得紫脲酸铵。

用途:络合指标剂,用于钙、钴、铜、锰、镍、钪、锌等的测定。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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