The effects of double-row concave ridge and film mulching on phosphorus content in flue-cured tobacco leaves and soils were studied by field and laboratory experiments.
采用田间试验与室内分析相结合的方法，探讨了烤烟地膜覆盖与双行凹型垄结合对烤烟及土壤磷素含量的影响。
The results showed that straw application increased crop yield, soil organic carbon accumulation, soil total nitrogen and phosphorus content as well as phosphorus activation.
结果表明，秸秆还田提高了作物产量，增加了土壤有机碳积累和土壤氮磷含量，且能活化土壤磷素。
Nitrogen, potassium, phosphorus content with increasing soil depth is gradually reduced.
碱解氮、速效钾、速效磷含量随着土层深度的加深逐渐降低。
Methods to determine THPC content and organic phosphorus content were reviewed in this paper.
本文介绍评述了目前测定THPC含量和与之相似的有机膦含量的分析测试方法。
While at grain filling stage, inorganic phosphorus content was obviously higher than that in the varieties with good grain plumpness.
灌浆期，籽粒充实度差的品种无机磷含量明显高于籽粒充实度好的品种。
With this method, the rate of dephosphorization reached 78.5% and the phosphorus content of the manganese ore dropped from 0.19% down to 0.04%.
通过该方法，对磷的质量分数为0.19%的锰矿石，磷的去除率为78.5%，脱磷后锰矿中磷的质量分数下降为0.04%。
The results show such refining makes the end phosphorus content to meet the requirements for high quality steel, and product cost can be reduced.
控制结果表明，此法与常规冶炼工艺相比，不仅保证出钢磷含量满足了品种钢的要求，而且在钢水质量提高的同时大大降低了生产成本。
The barrier metal layer contains phosphorus, and includes a phosphorus-rich portion where the phosphorus content is higher than that at other portion.
该金属屏蔽层含有磷，且具有含磷率大于其它部分的富磷部位。
Increase of the phosphorus content can enhance the biomass of masson pine seedling, but the physiological effect of P contents on the seedling is various.
增加供磷浓度能普遍提高各种源马尾松幼苗的生物产量，但不同磷浓度对幼苗产生的生理效应各不相同。
Because of high phosphorus content in ore, the exploitation was handicapped by economic and technical conditions at that time and has not yet been exploited.
由于铁矿中含磷量高，受当时经济技术条件的限制，一直未能开发利用。
Ginger specific humic acid fertilizer increased the soil organic matter content, total nitrogen content, available nitrogen content, available phosphorus content.
生姜专用腐植酸复混肥提高了土壤有机质含量，土壤全氮、碱解氮和速效磷含量。
Heavy granular superphosphate (GTSP) is a high concentration of water-soluble phosphate available, the available phosphorus content is SSP (SSP) of 2.5 ~ 3.0 times.
粒状重过磷酸钙(GTSP)是一种高浓度、水溶性的速效磷肥，其有效磷含量是普钙(ssp)的2.5 ~ 3.0倍。
After the analysis of EDS, the changing rules of coating ingredient with different parameters and the relation between phosphorus content and hardness were obtained.
对镀层进行EDS分析，得到了各参数变化时镀层成分的变化规律以及磷含量与硬度的关系。
The ductile-embrittlement transition temperature of vermicular graphite cast iron increased with increasing phosphorus content both in the as-cast and annealed condition.
蠕铁的韧性——脆性转变温度铸态和退火态均随磷含量的增加而升高。
The effects of solid oxygen and gaseous one on desiliconization pretreatment efficiency and temperature drop of high phosphorus content hot metal were experimentally studied.
在实验室试验研究了固体氧和气体氧对高磷铁水预脱硅效果及温降的影响。
As an initial stage on the process of foamed nickel preparation, a layer with low phosphorus content nickel deposit is applied on polyurethane foam substrate as a conducting layer.
在制备泡沫镍材料的过程中，首先要求在聚氨酯海绵基体上低磷化学镀镍制备导电层。
Scale and corrosion can be restrained effectively by treating circulating water by the reagent prescribed low phosphorus content and highly anti-scale and anti-corrosion components.
采用低磷、高阻垢性、高缓蚀性配方的缓蚀阻垢剂处理电厂的循环水，能有效地控制系统的结垢和腐蚀。
The results indicate that microcrystalline deposit with low phosphorus content has higher hardness, modulus and fatigue resistance than the amorphous deposit with high phosphorus content.
结果表明，低磷微晶镀层较高磷非晶镀层具有更高的硬度、弹性模量和疲劳抗力；
Compared with conventional electroless nickel plating process, the deposits obtained are greatly improved with higher phosphorus content, hardness, more compact and uniform microstructure.
与传统化学镀镍工艺相比，该工艺所得镀层含磷量高、硬度高，组织结构致密均匀。
The results showed that VA mycorrhizal fungi and dicalcium phosphate, octocalcium phosphate, iron phosphate, aluminium phosphate promoted growth and increased phosphorus content of corn plant.
结果表明：VA菌根真菌和磷酸二钙、磷酸八钙、磷酸铁和磷酸铝均促进了玉米植株生长，增加了植株含磷率和吸磷总量。
The phosphorus content of phytin was determined in molybdate-antimony-scandium color agent after it was digested by concentrated sulfuric acid and perchlorate, with its deviation of no over 5%.
浓硫酸和高氯酸消解后，用钼-锑-钪复合显色剂测定植酸钙中的磷含量，偏差不超过5%；
Combined Genetic Algorithms (ga) and back-propagation neural network (BP), an optimized GA-BP model was established to predict phosphorus content. Some data were chosen to train the network model.
结合遗传算法(GA)和误差反馈型神经网络(BP)，建立了优化的GA - BP神经网络预测模型，预测转炉炼钢过程钢液终点磷含量。
The optimum synthesizing conditions were defined, and chemical structures were confirmed by IR. The properties of flame retardant such as acid value, solid content and phosphorus content were tested.
研究了该阻燃剂的合成条件，用红外分析确认了其结构，测试了阻燃剂的酸值、含固量和磷含量等性能指标。
Based on the data from field experiments, the phosphorus content and phosphorus accumulation of rice plants were analyzed, and phosphorus distributions in different parts of rice were studied as well.
根据田间试验资料，分析了水稻植株的含磷量、磷素累积量以及不同部位的磷素分配。
Phosphorus content in zinc phosphate is determined by phosphorus vanadium molybdate yellow colorimetric method.
采用磷钒钼黄比色法测定磷酸锌中磷含量。
Phosphorus content in zinc phosphate is determined by phosphorus vanadium molybdate yellow colorimetric method.
采用磷钒钼黄比色法测定磷酸锌中磷含量。
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