c horizon是什么意思

用法例句

In a stepwise multiple regression,both soil parent material (i.

利用逐步多元回归分析土壤母质层(结合下层土壤质地和地质学)和排灌级别,它们是立地指标(树龄25年)重要的预测值,整个线性回归模型的相关系数(R2)为0。

The results show that the oils analyzed include biodegraded and normal oils,they are of the same genetic type,their organic parent materials are mixed ones,their higher plants make a great contribution to the oil generation,while bacteria are very important for the higher plants to reconstruct.

结果显示,所分析的原油既有生物降解油也有正常油,它们属于同一成因类型,原油有机母质为混合型,高等植物为原油的形成作出了重要贡献,但细菌对高等植物改造作用非常重要;原油形成于弱氧化-弱还原和淡水-微咸水环境;原油成熟度不高,主要是生油高峰期前形成的石油。

Effects of different mother material soils on biochemical characteristics of oolong tea;

不同母质的土壤对乌龙茶生化品质的影响

Authors discussed the main original bodies of gas-oil formation in different stages in China, which enrich main mother material of gas-oil formation named sporopollen element and lignin.

这些母源体中富含形成油气的主要母质即孢粉素与木质素。

The results shwed: when the mother materials were the same,thecopper adsorption of the soils of three kinds of textures was heavy loam>medium loam> lightloam; when the texture was the same,the adrorption of the soils which developped from differ-ent mother materials was Gneiss soil<Quaterinary Red.

主要研究了第四纪红色粘土上发育的不同质地土壤（轻壤、中壤、重壤）及分别由第四纪红色粘土和片麻岩发育的相同质地土壤（重壤）对铜的吸附──解吸性能，结果表明，由同种母质发育的不同质地土壤对铜的吸附量大小是重壤＞中壤＞轻壤；它们的临界值大小也与之顺序相同。

The phosphate adsorption and desorption in lateritic red soils from 4 parent materials in Guang-dong were studied in the paper.

研究了广东省４种不同母质赤红壤磷的吸附与解吸特征,结果表明,４种不同母质赤红壤等温吸附方程(Ｌａｎｇｍｕｉｒ方程,Ｆｒｅｎｄｉｌｃｈ方程和Ｔｅｍｋｉｎ方程)的拟合结果都达到了极显著的水平。

And the landform was crashed and there wasmuch crumb in soil parent material, additionally it has been affected by human disturbance,those instance resulted in many problems such as the dro.

本研究以川中丘陵区内江市的坡耕地土壤为研究对象，以紫色上的主要成上母质(遂宁组J_3s、自流井组J_2z、蓬莱镇组J_3p、沙溪庙组J_2s)为基础，结合土地利用类型(耕地、林地、荒草地)选择8个典型丘体，按上、中、下坡位，选取样点。

But in this area, the landform was crash and there was many crumb in soil parent material, additionally it had affected by human disturbance ,those instance resulted in many problems such as the drop of soil fertility quality, the decline of agricultural production, the worsen of environment quality and so on.

四川盆地中部丘陵区是我国重要的粮、油产区，由于区域内地形破碎、土壤母质碎屑含量高，加之人为因素的影响，导致土壤肥力质量下降、农业生产减产和生态环境质量恶化等问题。