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The phosphorus contents with iron plaque accumulated at rhizosphere and depleted at rhizosphere without iron plaque of Arundo donax Linn and typha latifolia .

有铁氧化物胶膜沉积的湿地植物根际土有效含量累积,无铁氧化物胶膜沉积的湿地植物根际土有效含量耗竭。

The phosphorus contents adsorbed by iron plaque were 81.7% for Arundo donax Linn and 85.7% for typha latifolia of the wetland plants with iron plaque.

芦竹根表铁氧化物胶膜吸附的占根系吸附吸收的81.7%,香蒲是85.7%。

The effects of catalyst dosage, the amounts of hydrogen peroxide and phase transfer agent, the pH value of the solution, the reuse of catalyst and the reaction temperature on the azelaic acid yield were investigated.

以30%过氧化氢作为氧化剂,在相转移试剂和钨酸催化剂作用下催化油酸制备壬二酸,考察了催化剂钨酸用量、过氧化氢用量、溶液pH值、相转移试剂用量、反应温度等因素对壬二酸产率的影响。

Potassium, natrium determines it is good that use ion chooses electrode indirect method it is better also with indirect method to determine at calcium of direct way;, it is next occasionally phosphor of; of law of azotic arsenic Ⅲ determines use phosphor molybdic acid is ultraviolet law outcome is better it is better with result of law of personal candy kinase that; blood sugar determines; urea determines use Niao enzymatic ultraviolet anhydride of better; flesh uses rate law result enzymatic law outcome is better; albumin determines, it is vanadium acid next alkalescent phosphoric acid of oxidation law; is enzymatic determine outcome of fluid of use AMP amortize is better; amylase determines law of thing of enzymatic standard background and iodic colorimetric law coefficient of variation all bigger, former a bit small, latter of percent of pass is tallish, each lab can try to choose according to his condition.

结论钾、钠测定使用离子选择电极间接法好于直接法;钙测定用间接法也较好,其次是偶氮砷Ⅲ法;测定使用钼酸紫外法结果较好;血糖测定用己糖激酶法结果较好;尿素测定用脲酶紫外速率法结果较好;肌酐用酶法结果较好;白蛋白测定用溴甲酚绿法较好;胆红素测定用酶法结果好,其次是钒酸氧化法;碱性酸酶测定使用AMP缓冲液结果较好;淀粉酶测定酶法底物法和碘比色法变异系数均较大,前者稍小,合格率后者稍高,各实验室可根据自己的条件加以选用。

Thereby, the operation duration is prolonged, and the backwashing frequency decreases.

结果表明,采用周期性排除厌氧富液的方法,可有效减缓生物膜中的积累,从而延长了反应器的运行周期,降低了反冲洗频率。

Describes that the relationship between soil phosphorus and rice yield according to the biometrical results for test of soil phosphorus and their corresponding determination of yield.

表6 根据土壤及其确定产量试验的生物统计结果描述了土壤和水稻产量之间的关系。

Three protozoa (Bodo edax, Colpoda cucullus, Amoeba proteus) were isolated from soil. The porous simulation with glass bead, soil column and root box incubation experiments were made to study the association of protozoa movement with phosphorus translocation and its influencing factors. The effects of protozoa on corn growth and corn straw mineralization were also involved. The results showed that protozoa movement in glass bead column was greatly controlled by the pore sizes. Bodo edax, about 5-7 m, could pass through the pores of 28-20 11 m in diameters. Colpoda cucullus (30-60 m) could move through the pores of 155~116 m. However, no Amoebaproteus(100~150 m) was found in the effluents from all the columns. All the three protozoa made 32P redistribution in soil column.

本研究利用土壤中常见的3种原生动物(梨波豆虫Bodo edax、僧帽肾形虫Colpoda cucullus、大变形虫Amoeba proteus),通过玻璃珠孔隙模拟、土柱及根箱培养试验,研究3种原生动物运动与素运移之间的关系及其影响因素,以及原生动物对玉米素营养的影响,同时对3种原生动物在玉米秸秆分解中的作用做了初步的探索,研究结果表明:原生动物的运动与孔隙密切相关,Bodo edax(5~7μm)能够穿过28~20μm孔隙,Colpoda cucullus (30~60μm)只能穿过155~116μm的孔隙,而Amoeba proteus(100~150μm)不能从玻璃柱中流出。

Identified by various methods such as X-ray powder method, infrared analysis and D.T.A., microscopic studies,they are found to be composed almost entirely of one rare mineral, brushite CaHPO_4·2H_2O, while some of them may contain a small amount of another rare mineral,monetite CaHPO...

样品的室内测试鉴定工作,由季寿元、方金满、唐玉梅三人完成;成因问题的探讨,则以陈、王二人的意见为主合作写成。经初步研究,确定结石的主要成分为CaHPO_4·2H_2O,相当于矿物中的透钙石,在个别样品中尚有少量的三斜钙石CaHPO_4存在。

Relationship between soil nutrient and growth of Castanea mollissima was studied by stepwise regress and Path analysis.The results showed that, 4 soil factors of organic matter, hydrolytic nitrogen,rapid phosphorus and rapid potassium had significant effects on its yield and growth of fliage branch, and that the most significant factors affecting yield and growth of foliage branch were rapid phosphorus and hydrolytic nitrogen, respectively.

应用逐步回归和通径分析,对土壤养分与板栗株产和徒长枝生长的相关关系进行研究,结果表明,所选的有机质、水解氮、速效和速效钾4个土壤养分因子对板栗株产和徒长枝的生长都有着显著和极显著的相关关系,其中以速效对产量影响最为显著,水解氮对徒长枝生长影响最为显著。

Study on the Phosphobacteria Distribution Characteristic in Rhizosphere and Nonrhizosphere Soil of Cerasus pseudocerasus

从粉煤灰和农田土壤中分离筛选出2株解细菌 CA和SL,以紫花苜蓿为供试植物,通过盆栽试验研究接种解细菌对粉煤灰基质的改良作用。

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