Potassium efficiency of soybean genotypes 94065-2 (tolerance of low potassium) and 95137 (sensitive to low potassium) was studied in solution culture with 4 different potassium concentrations.
将耐低钾基因型94065-2和不耐低钾基因型95137，以4个水平钾浓度的水培方法对其钾效率进行对照研究。
The typical erect panicle rice variety Shennong 265, and semi-erect panicle rice variety Liaojing 294 were used to compare dry matter accumulation, absorption and use efficiency of potassium.
选用典型直立穗型水稻品种沈农265和半直立穗型品种辽粳294为试材，研究两品种干物质积累、钾素吸收和利用效率的差异。
Genotypic differences of potassium (k) efficiency among 86 cotton cultivars were investigated under water culture at seeding stage, 28 typical cultivars were picked out for a series study.
营养液培养条件下对86个棉花基因型苗期进行钾效率筛选，并对其中的28个进行了系统的研究。
For developing high efficiency and secure coagulants, Potassium ferrate prepared by hypochlorite oxidation method was used in the treatment of raw water with low temperature and low turbidity.
为了研制高效和安全的混凝剂，采用次氯酸盐氧化法制备高铁酸钾，对高铁酸钾处理低温低浊水源水进行研究。
How to increase the fertilizer application efficiency and potassium content in tobacco leaf is a key measure for improving the quality of flue-cured tobacco.
如何提高肥料利用率及烟叶含钾量是提高烟叶品质的关键问题。
However, due to the lower fertilizer efficiency and poor potassium enriched capability, the quality of flue-cured tobacco as a whole in China can not meet the demand of good quality and proper yield.
然而，目前我国烟草生产存在肥料利用率低、烟叶富钾能力不强，烟叶品质达不到烟草生产“优质适产”的总体要求等问题。
Potassium(K) balance in purple soil rice field ecosystem under rice-wheat rotation were studied on the National Purple Soil Fertility and Fertilizer Efficiency Monitored Base.
在国家紫色土肥力与肥料效益监测基地上，研究了稻麦轮作制度下紫色土稻田生态系统中钾素的平衡状况。
To get high yield and efficiency, the applying rate of potassium is discussed.
文中还讨论了高产高效的施钾量。
Technological process and efficiency of the fertilizer potassium metaphosphate from phosphorus, phosphoric acid or phosphate fertilizer and potassium chloride were introduced.
介绍用元素磷 （或磷酸或磷肥 ）和氯化钾生产偏磷酸钾肥料的工艺及产品肥效。
The results of TOC analyses imply :the removal efficiency of TOC by PAC, PAC combined with potassium permanganate and GAC were 34.5 %, 38.2 % and 39.8 % .
TOC分析结果表明：粉末活性炭预处理、粉末活性炭与高锰酸钾联用和粒状活性炭深度处理对TOC的去除率分别为34.5％、38.2％和39.8％。
The preoxidation efficiency of micropolluted raw water with potassium permanganate composite(PPC) and potassium permanganate combined with ozone was compared in a waterworks in the south of China.
通过中试试验考察了高锰酸盐复合药剂预氧化与活性炭—砂滤池组合工艺处理富营养化水体的效能。
The preoxidation efficiency of micropolluted raw water with potassium permanganate composite(PPC) and potassium permanganate combined with ozone was compared in a waterworks in the south of China.
通过中试试验考察了高锰酸盐复合药剂预氧化与活性炭—砂滤池组合工艺处理富营养化水体的效能。
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