1) typical black soil region
典型黑土区
1.
Sediment transport characteristics at the monthly and yearly scales in midstream of Wuyuer River in the typical black soil region of Northeastern China
东北典型黑土区乌裕尔河中游泥沙输移月年时间尺度特征
2) phaeozem region of northeast China
东北典型黑土区
1.
The distributing ,formation, soil erosion actuality of phaeozem region of northeast China is expounded in details.
结合前人经验对东北典型黑土区T值的确定进行了方法上的分析。
3) typical black soil
典型黑土
1.
Based on the method of incubation test and controlling the pH of typical black soil samples, the relationship of soil pH and the effective content of trace elements of Cu, Zn and Mn was studied.
采用室内培养实验的方法 ,控制典型黑土样品的酸碱度值 ,探讨典型黑土中 Cu、Zn和 Mn等微量元素有效态含量与 p H值的关系。
2.
The results showed that:Typical black soil showed a significant linear regression relation between splash erosion amount and rainfall intensity,then the Rainfall intensity<46.
为了系统了解典型黑土区表层土壤的击溅侵蚀特征及其变化规律,采用室内人工模拟降雨试验,设计不同的降雨强度、降雨历时,对比分析不同降雨条件下,典型黑土耕地表层土壤溅蚀土壤颗粒的空间分布、团聚体组成等特征;通过对溅蚀量、水稳性团聚体组成、团聚体平均重量直径(MWD)以及团聚体富集率(ER)等指标的测定、计算与分析,研究了人工模拟降雨条件下典型黑土溅蚀过程中团聚体粒级分布及其分选特征;分别以开垦年限为8a、30a、50a的典型黑土耕地和未开垦的天然次生林林地表层土壤为对象,对比研究不同开垦年限土壤的溅蚀规律,并通过析因分析研究了开垦对黑土溅蚀的影响机制,寻求影响典型黑土区土壤击溅侵蚀的主导因素。
补充资料:东北人民自卫军(见东北军区)
东北人民自卫军(见东北军区)
Northeast People's Self-Defense Army
黔勺eLR望份驴we衬un不月L八比曰卫乐(Northeast PeoPle’ssel卜DefenseA肋y)见东北军区。
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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