查询词典 nitrogen

The roots of spring-sown maize and summer-sown maize could touch with each other in relay-planting system, which made the roots competed for water and nutrition. Thus, more of the water and nitrogen in those soil layers were used, which led to the decrease of water and nitrogen in those soil layers.

玉米根系数量和TTC还原总量在剖面分布上均发生交叉，春、夏玉米间存在养分与水分的竞争，使根系所达到的区域土壤养分和水分利用量增加，从而使相应土层土壤全氮含量和水分含量下降。

In this paper, the construction of simple nitrogen laser is herebyintroduced; The relationship between distance of spark gap and discharge voltage, outputenergy of the nitrogen laser and discharge voltage, have been studied experimentally.

介绍了一种简易氮分子激光器的构造；实验研究了火花隙距离与放电电压的关系和激光器输出能量与放电电压的关系。

The space variation characteristic of different layer soil organic matter and total nitrogen is different, but the structure factor plays a leading role in the space variation of full nitrogen and organic matter.

不同层次土壤有机质与全氮的空间变异特征具有一定的差异，但结构性因素对有机质与全氮的空间变异起主导作用。

A 3-year-long field experiment was carried out to investigate the effects of nitrogen rate on nitrogen uptake and utilization of winter wheat and residual nitrate in soil under straw mulch.

通过田间定位试验研究秸秆覆盖条件下施氮量对小麦氮素吸收利用及土壤硝态氮残留的影响。

Layers from 0 to 120cm and the effects of different factors on NO3(superscript -)-N accumulation The results showed the more nitrogen fertilizers applied, the more NO3(superscript -)-N accumulated in different soil layer; nitrogen fertilizers applied with organic fertilizer or sod culture could reduce the accumulation of NO3(superscript -)-N.

结果表明，氮肥的大量施用会造成硝态氮在土壤中的累积，而配施有机肥、地表生草、合理的种植密度均可减少硝态氮的累积量。

To pick the depletion region note thick liquid with the traditional use to guard against the fire fighting method to be different,topicked the depletion region to pour into the nitrogen the method topresent more superiority,introduced the motion typecarbon member sieve making nitrogen machine constitution.

与传统的采用向采空区注浆灭火方法不同，向采空区注入氮气的方法呈现出更大的优势，介绍了移动式碳分子筛制氮机的构成、制氮的工艺流程、电气控制以及向采空区注氮在灭火中的优点。

Based on the mechanism of nitrogen transfer among different rice leaves, red edge slope and red edge position of the most upper and the 3rd expanded leaves were investigated specially. And using the two red edge parameters (red edge slope and red edge position), a new vegetation index (red edge curve shoulder angle vegetation index, abbreviation RSAVI) was calculated to detect rice nitrogen nutrition status.

基于氮素在水稻不同功能叶片之间运转规律的机理，文章重点分析了第一和第三完全展开叶红边斜率和红边位置的变化，并基于红边位置和红边斜率构建了一个新的植被指数（命名为&红边曲线肩夹角植被指数&，简称为RSAVI）监测水稻氮素营养状况。

Removal of the shoot apex and leaf wounding did not show any influences on nitrogen uptake by plant, but increased nicotine production per unit nitrogen.

切除顶芽和叶面损伤对烟株体内的氮浓度及吸氮量均无显著影响，但显著提高了烟株体内单位氮素产生烟碱的能力。

The semi-aerobic landfill can eliminate the pollution of nitrogen in the landfill by means of its self-disposal function in a shorter period within the laboratory simulated conditions. This supplies an important idea and way for solution to the problems of high concentration of ammonia nitrogen being difficult to treat in leachate in the middle and final stages.

在室内模拟条件下，准好氧填埋完全能够在较短的时间内利用自身的处理功能，去除垃圾中氮污染，这为解决传统填埋场中后期垃圾渗滤液氨氮浓度高、处理难的问题提供重要启示和有效途径。

The dissolved curves of nitrogen and potassium of B2,PS,F2,F2F in same soil column were similar to that of in sand column, and difference was only dissolved time. The peak time of phosphorus was later than that of nitrogen and potassium.

四种胶结包膜型缓/控释肥料在同一土壤柱里氮钾素溶出曲线与其在砂柱里的近似，只是溶出时间不同，磷素溶出高峰期比氮钾素延后。B2、PS、F2、F2F之间的差别与其砂柱里的情况相同。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。