nitrogen fixation的例句大全

When the growth medium is deprived of combined nitrogen sources, 5%-10% of the cells along each filament will differentiate into heterocysts which are specialized for nitrogen fixation.

当培养基中缺乏化合态氮源的时候，整条菌丝上大概有5%-10%的细胞会分化成具有专一固氮功能的异形胞。

These genes related to symbiotic nitrogen fixation are transmitted and expressed differently between Rhizobium and Leguminous plant in root nodule development.

在根瘤发育过程中，这些基因在根瘤菌与植物之间进行着信息交换，并且具有不同的表达水平。

Light intensity directly influenced the rate of photosynthesis and the amount of photosynthetic products transported to the root nodule used as energy source of nitrogen fixation of.

光照强度直接影响大豆-根瘤菌共生固氮体系的光合产物运向根瘤的数量和根瘤菌固氮作用的能源供应。

The root nodule of the legume plant's ability of nitrogen fixation from air makes it grow in the poor soil very well.

豆科植物的根瘤可以从空气中固定氮气而在贫瘠的土壤中生长。

Mo nutrition in soil and plant at podding stage was correlated significantly or highly significantly with nitrogen fixation of root nodule, nitrogen nutrition of plant and yield.

结荚期连作大豆土壤和植株钼营养与根瘤固氮、植株氮营养及产量间相关显著或极显著。

Applying nitrogen fertilizer could enhance the fresh weight and dry weight of Chinese milk vetch, but it had negative effect on the formation of root nodule and the biological nitrogen fixation.

施用氮肥能促进紫云英干物质的积累和鲜草产量的提高，但对其根瘤的形成及生物固氮有负面影响。

Interaction of Barnyardgrass and Water Stress on Nitrogen Fixation of Soybean

稗草和水分胁迫对大豆植株根瘤固氮速率的交互影响

the nitrogen fixation and as a nitrogen input in shrimp culture enclosures

对虾养殖实验围隔中的固氮作用及其氮输入

Effect CF various light intensities on nitrogen fixation and sugar distribution of broad bean

不同光强对蚕豆固氮和糖分布的影响

The macroelement factor was higher in Leguminosae plants than in Gramineae plants as the plants of Leguminosae had the capacity of nitrogen fixation.

豆科与禾本科相比，豆科植物因其具固氮能力，所含大量元素水平较高，而禾本科植物因细胞壁硅质化，含微量元素稍高；

The growth period, nitrogen fixation, growth condition and other growth characteristics of nostoc. SP were studied.

摘要研究了念珠藻的生长周期、固氮特性、生长条件等生长特性。

Studies on Nitrogen Fixation of Frankia sp Cel 517 Strain

弗兰克氏菌Cel517菌株固氮研究

The formation of foot nodule and activity of nitrogen fixation is related with soil conditions and host-plant characters.

根瘤的形成和固氮活性与土壤条件和寄主特性密切相关。

Cytochrome is a kind of electron transfer protein containing home. It has important function in biological oxidation, nitrogen fixation, photosynthesis energy exchange and reserve.

细胞色素（Cyt）是一类含血红素的电子传递蛋白，它们在生物氧化、固氮、光合作用、能量转换以及储存中有重要的功能。

Under mixing rare element with Rhizobia the fresh weight of forage legumes plants and their root nodes were increased significantly and the nitrogen fixation activity of root nodes were increased 0.22& 3.27 times than control.

稀土与牧草根瘤菌配合施用，对豆科牧草植株鲜重和根瘤鲜重均显著增高，且根瘤的固氮活性比对照增加0.22～3.27倍。

Broad bean ( Vicia faba Linn) is a important edible bean and also can be used as medicine. It has a high economic value and the strong ability of nitrogen fixation.

蚕豆（Vicia faba Linn，broad bean）是世界重要的食用豆类作物之一，可入药，具有较高的经济价值，且具有很强的固氮能力。

The low dff value in physiologically active organs, such as young leaves, flowers, and stem apices indicated that the nodular nitrogen fixation and the application of nitrogen fertilizer were important for their development.

dff值表明，在花序、顶心、绿叶生理功能旺盛器官，比茎干和衰老器官低，说明生物固氮或土壤供氮对紫云英功能器官发育的重要性。

Internationally, research effort has been focused on biological nitrogen fixation in legume/ graminaceae system due to environmental problems and energy crisis causing by irrational fertilizer N use.

近年来，在不合理施用氮肥所带来的环境问题和过度依赖石化能源所产生的能源危机双重压力下，国际上对豆科在间作农业和混作牧草中的固氮作用研究十分重视。

Effect of barnyardgrass ( echinochloa crusgalli) shading on nitrogen fixation of soybeans

稗草阴蔽对大豆根瘤固氮速率的影响

Solving the Fertilizer Issue: UNEP Promotes Natural Nitrogen Fixation

解决肥料问题&联合国环境规划署提倡天然固氮