土壤性质

Therefore,enzyme activities,especially peroxidase and sucrase activities,could be regard as an index of bamboo forest deterioration.

土壤生物学性质特别是过氧化氢酶和蔗糖酶活性可作为竹林退化指标。表6参7

Widespread iron bacteria itself to the role of Concentrations, and allows a variety of ferrous oxide reduction in the role and dissolved minerals precipitate role in the formation of different iron minerals and mineral nature of the changes significantly affected the soil and water geochemical characteristics.

广泛存在的细菌本身对铁具有富集作用，并可使各种含铁矿物发生氧化还原作用和溶解沉淀作用，形成不同的铁矿物并导致矿物性质的变化，极大地影响了土壤和水体的地球化学特征。

Straws of wheat are forms created by nature; they are materials that return to the soil.

小麦秸秆是形式所创造的性质，它们是材料返回到土壤中。

Desorption of the phosphate previously sorbed on the variable-charge minerals,and some typical groups of soils in China with soil reaction varying from very acid through neutral to alkaline and with different mineral composition was studied.

研究了可变电荷粘粒矿物和矿物学性质不同的代表性土壤对磷酸根的等温解吸特性。结果表明磷酸根的解吸等温线一般都滞后于吸附等温线。

Five different types of substrates (corncob, peat, soil and chicken dung) were used in melon culture in greenhouse after composting, and their physical and chemical properties and effect on melon yield were investigated.

以玉米芯、草炭、土壤和鸡粪为基质，设计5种不同配方，堆肥腐熟后用于薄皮甜瓜的温室栽培，研究人工营养基质的理化性质及其对甜瓜产量的影响。

Based on field experiments and theoretical analysis,the sensitivity of TDR to the nature of wave guide materials and to the length of wave guide was studied.

介绍了6050X1型时域反射仪的基本结构和测定土壤含水率的原理，通过试验分析了它对导棒材料性质及导棒长度的灵敏性。

Response of soil microbial characteristic to vegetation restoration: alk.

4土壤生物学性质对植被恢复过程的响应：碱性磷酸酶、蔗糖酶和脲酶活性总体上随植被恢复年限增加而呈增加趋势；植被恢复75 a白桦林地的各种酶活性均较低。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐