钾

The results show that the degradation effectiveness of PVA was optimum when potassium ferrate and sodium hypochlorite were jointly used as the oxidative agent. The removal rate of PVA and COD was more than 98% and 40% under the conditions that the concentration of PVA was 3.0 g/L and the pH value was 7.2, the dosage of potassium ferrate and sodium hypo chlorite were 0.32 g/L and 3.92 g/L, and the reaction time was 50 min. In the process of united oxidative degradation, the chain of PVA was cut off and many low molecular weight compounds were formed. The main degradation products were carboxyl compounds.

结果表明，用高铁酸钾与次氯酸钠联合氧化PVA时，降解效果最佳；在3.0 g/L，pH值为7.2的PVA溶液中，当高铁酸钾与次氯酸钠的投加量分别为0.32 g/L、3.92 g/L，反应时间为50 min时，PVA的去除率大于98%，COD去除率大于40%；在联合氧化降解过程中，PVA断链成小分子物质，最终降解产物主要为羧基化合物。

In 1L semi-continuous tank reactor,researches the effects of sodium dodecylsulfate,potassium oxalate,mixture of sodium dodecylsulfate and potassium oxalate on formation process of methane hydrate .

在1L的半连续搅拌槽式反应器中，研究了添加剂十二烷基硫酸钠、草酸钾和草酸钾与十二烷基硫酸钠复合对甲烷水合物生成过程的影响。

To establish the quality standard for hufan oral pellicles.

硫酸铝钾，钾矾11。建立胡矾口腔膜的质量标准。

In order to improve the efficiency of isolating actinomycetes from soil and solve the problem of contamination by bacteria and fungus when actinomycetes isolated and cultivated, the effect of K2Cr2O7, actidinoe, nystatin and curbenduzim on bacteria, fungus and actinomycetes was studied in this article.

为了提高从土壤中分离放线菌的效率，解决放线菌分离培养中细菌和真菌的污染问题，研究了重铬酸钾、放线菌酮、制霉素和多菌灵等4种抑制剂对细菌、真菌及放线菌的作用，在此基础上提出了用重铬酸钾作为高效、方便、廉价的放线菌杂菌抑制剂的新观点。

Until 2006, the quick-acting potassium in soil got to 109.6 mg/kg, averagely increasing 2.35 mg/kg per year.

速效钾在1981~1991年间共下降41.6mg/kg，年平均下降4.16mg/kg，199l年后明显回升，到2006年土壤速效钾含量达到109.6mg/kg，年平均增加2.35mg/kg。

On November 5, the U.S. Department of Commerce announced its intention to impose a 36.53-percent duty on oil country tubular goods from 37 Chinese companies and a preliminary anti-dumping rate of 99.14 percent on products of some other Chinese companies.

在11月6日，美国国际贸易委员会宣布其决定征收反倾销、反补贴关税，从中国进口的涂布纸，印度尼西亚，以及monopotassium钾钠，磷酸氢钾磷肥，从中国进口的。

By no K top-dressing, earlier cutting roots is better for improving K content for the low leaves and middle leaves; but cutting roots at the same time of topping is benefit for improving K content for up leaves.

在不追施钾肥的情况下，对下部和中部叶片而言，现蕾期断根有提高含钾量的趋势。而对上部叶片而言，打顶时断根有提高含钾量的趋势

By K top-dressing, cutting roots soon after decapitation is the best time for improving low leaves and up leaves'K content, but cutting roots by squaring is the best time for improving K content in middle leaves.

在追施钾肥的情况下，打顶时断根对提高下部叶和上部叶片含钾量的效果最好，但中部叶含钾量则是现蕾时断根处理为最高。

By basin planting studies were carried out on the effect of applying K fertilizer on disease index and susceptible rate of tomato early blight and on the reasons for applying potissum to raise the disease resistance.

采用盆栽试验研究了钾对番茄早疫病病情指数和发病率的影响，并从其茎结构方面探讨了施钾提高番茄抗早疫病的原因。

In this paper,soil pH,the content of organic matter,total nitrogen,potassium and phosphorus,available nitrogen,potassium and phosphorus,water-soluble chlorine of the main soil types was studied in the Yunnan Tobacco-growing areas.

中文摘要：本文系统地研究了云南省植烟区的主要土壤类型的pH值和有机质、全氮、速效氮、全钾、速效钾、全磷、速效磷、水溶性氯含量等理化指标，明确了不同土壤的养分丰缺状况，依据测土配方施肥的要求，制定了合理的施肥对策。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。