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- Effects of Combined Application of Organic and Inorganic Nitrogen Fertilizer on Developmental Characteristics of Cotton and Nitrogen Content in Soil 有机无机氮肥配施对棉花生育特性及土壤含氮量的影响
- nitrogen content in soil 土壤氮素
- Inoculation experiments were carried out in wheat astragalus mixed cropping system to study the changes of plant biomass, nitrogen content in plants and soil, and enzyme activity of Rhizobium . 采用盆钵实验;在小麦与紫云英混作系统中;通过对紫云英接种根瘤菌;研究了小麦与紫云英生长过程中植株生长、植株生物量、植株与土壤氮素变化情况及根瘤菌的酶活性.
- The stretchability is im proved with the reduction of nitrogen content in steel. 钢丝拉拔性能随钢中含氮量下降而有所改善。
- Factors affecting the nitrogen content in liquid steel have been analyzed in LF/VD process. 结合现场试验分析了LF/VD过程影响钢液氮含量的因素。
- We got the relative compound standard indeterminacy of nitrate nitrogen content in water,8. 采用酚二磺酸分光光度法对水中硝酸盐氮进行不确定度评定。
- The effect of technical parameters on nitrogen content in vanadium carbonitride is investigated. 研究了一步法合成碳氮化钒的生产工艺及工艺参数对碳氮化钒氮含量的影响。
- The experiment indicates that the ammonia nitrogen content in the synthesized CNN is 22.78%,and its total nitrogen content comes to 35.08%. 实验表明;合成的CNN中氨态氮含量22.;78%25;总氮含量35
- The uncertainty of chlorine content in soil samples determined by X-ray fluorescence spectrometry has been evaluated. 摘要用实例对X射线荧光光谱法测定土壤样品中氯的不确定度进行了评定。
- The effect of Re element addition on the nitrogen content in the weld was insignificant due to the oxidization from the early deoxidization stage. 而由于稀土元素在先期脱氧中大量氧化,其脱氮效果较弱,稀土元素对熔敷金属的总含氮量的影响不显著。
- The variation of nitrogen content in molten steel ha s been studied by Argon\|powder injection apparatus with sealing cover. 通过对密封罩吹氩喷粉设备工艺的设计应用,研究了喷粉脱硫过程中钢液氮含量变化。
- When the absolute moisture content in soil dropped to 6.7%,the activity of CAT first reached the maximum. 结果表明;随干旱程度加重;扁桃抗氧化酶活性逐渐增强;当土壤绝对含水量降至6.;7%25时;过氧化氢酶(CAT)活性首先达高峰;
- The uncertainty of measurement for the determination of nitrogen content in the fertilizer by distillation was evaluated. 对蒸馏法测定化肥中氮含量的测量不确定度进行了评定。
- Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. 肥料.;在氢氧化钠作用下其它物质释放出的氨气中测定氨态氮的含量
- Vertical distribution of trace element contents in soil in Tianjin Area. 天津地区土壤中微量元素含量的纵向分异。
- Growing the lasers by MBE rather by MOCVD promises to lowermanufacturing costs by reducing the consumption of ammonia gas, whichprovides the nitrogen content in the devices. 与MOCVD法相较,以MBE来生长雷射二极管,不需使用氨气来制作氮成份,因此可以降低制造成本。
- As well as, the content of MDA would increase with drought,and reached the top,when the absolute water content in soil dropped to 2.1%. 丙二醛(MDA)含量随干旱加重而逐渐增加;当土壤绝对含水量降至2.;1%25时其含量最高。
- High ability of spikelet formation of short-duration varieties could be attributable to high nitrogen content in leaf sheath at panicle initiation stage. 可将小日月品种小穗形成能力高归因于小穗分化初期叶鞘中的氮含量高。
- Heavy rain or saturating rain would lead to drastic decrease of mercury content in soil gas or even to the disappearance of anomalies. 大雨或透雨过后,壤中气汞含量急剧降低,甚至使异常消失;
- Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide.Titrimetric method. 肥料.;在氢氧化钠作用下其它物质释放出的氨气中测定氨态氮的含量