1) soil mineral elements
土壤矿质元素
1.
At the South Edge of the Tengger Desert, the sampled sites of mobile sanddune, semi-fixed sanddune and fixed sanddune were selected as the different stages of the reversion process of desertification with the method of substituting time with space, and topsoil mineral elements of the decertified land were studied in reversion process of desertification.
以腾格里沙漠南缘沙漠化土地为研究对象,应用时空替代法选择流动沙丘、半固定沙丘、固定沙丘的沙漠化逆转序列样地,研究了沙漠化逆转过程土壤矿质元素的变化特征。
2) soil nitrogen mineralization
土壤氮素矿质化
1.
In situ study on soil nitrogen mineralization in successive rotation stands of poplar plantation in north Jiangsu province
苏北杨树人工林连栽林地土壤氮素矿质化原位研究
3) Soil element heterogeneity
土壤元素异质性
4) soil element
土壤元素
1.
Endemia effects and impacts of geological background on soil elements distribution and effects of endemic disease in the Three Gorges Reservoir District;
三峡库区地质背景对土壤元素分布的影响及地方病效应
2.
8 mg/kg, 22 mg/kg and 50 mg/kg, respectively, on the basis of geochemical background values of soil elements and soil ecological effect.
根据国内外制订土壤污染物质最高允许浓度的原则,利用山西土壤元素地球化学背景值及土壤生态效应的研究资料,初步确定了山西省土壤中Hg,Cd,As,Pb等污染物的最高允许浓度:Hg0。
6) soil mineral N
土壤矿质氮
1.
) yield,soil mineral N(NO-3-N and NH+4-N) and N balance.
)产量、土壤矿质氮(NO3--N和NH4+-N)及氮素平衡的影响。
补充资料:卵巢混合性生殖细胞-性索间质性肿瘤
卵巢混合性生殖细胞-性索间质性肿瘤
本瘤1921年首次由Masson描述,直到1972年由Telerman首次命名为本瘤,并沿用至今,本瘤病因尚不明了。发生年龄自新生儿到67岁妇女均可发生,少数为男性。临床表现:患者为正常女性及男性外表,女性病人可有下腹包块,发生蒂扭转时有下腹痛,并有急腹症症状,可有内分泌紊乱,性早熟表现,男性有睾丸增大。染色体核型分析均正常。内分泌检查与临床表现符合,肿瘤为单侧,圆形或卵圆形。表面光滑,直径2.5~30cm,实性肿瘤内有囊性区。切面灰白、灰红或淡黄至淡褐色。镜下有梭形细胞及生殖细胞。治疗:视情况采取单纯手术,或手术加放疗及化疗。需长期随访。预后:单纯本病者良好。
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