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characteristics of phosphorus
相关语句
  磷素特征
     CHARACTERISTICS OF PHOSPHORUS AND CORRELATION STUDY ON PHOSPHORUS SUPPLYING CAPACITY IN PADDY SOIL FROM YELLOW EARTH
     黄壤性水稻土的磷素特征及供磷能力的相关研究
短句来源
  磷素
     Effect of long-term located fertilization on spatial distribution characteristics of phosphorus in vegetable soil was studied.
     以长期定位施肥蔬菜保护地土壤为材料,研究不同施肥处理对土壤磷素在剖面上分布特征的 影响。
短句来源
     Soil culture experiments at two phosphorus levels (5 mg·kg~(-1) and 180 mg·kg~(-1)) were conducted to study the characteristics of phosphorus efficiency of different provenances of Liriodendron chinese.
     设计了低磷(5 mg.kg-1)和高磷(180 mg.kg-1)两个磷素处理水平的盆栽实验,研究马褂木6个代表性种源的磷效率特性差异及其相关性状的关系。
短句来源
     Experimental Study on Characteristics of Phosphorus Competition in Hedgerow-Intercropping System
     农林复合系统中绿篱与作物间磷素竞争特点试验研究
短句来源
     Dynamic Characteristics of Phosphorus in Surface Water of Paddy Field and Its Potential Environmental Impact
     水稻田表水磷素的动态特征及其潜在环境效应的研究
短句来源
     The results were listed as follows: 1 Fraction and distribution characteristics of phosphorus in vegetable soils
     1、蔬菜地土壤磷素的空间及形态分布特征
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  “characteristics of phosphorus”译为未确定词的双语例句
     Characteristics of Phosphorus Adsorption and Release by Sediment of the Suzhou River
     苏州城市河道底泥对磷吸附释放特征的研究
短句来源
     Study on the Phosphorus Efficiency in Varieties of Spring Wheat Ⅲ. Characteristics of Phosphorus Efficient Varieties
     春小麦品种磷营养效率研究 Ⅲ.磷高效品种的特征特性
短句来源
     STUDY ON CHARACTERISTICS OF PHOSPHORUS EFFICIENCY OF SOYBEAN NATIVE GERMPLASM IN GUANGDONG PROVINCE Ⅰ. DIFFERENCES OF SOYBEAN GENOTYPES IN CHARACTERISTICS OF PHOSPHORUS EFFICIENCY AND RELATIONSHIP BETWEEN PHOSPHORUS EFFICIENCY AND CONTENT OF SOIL
     广东大豆地方种质磷效率特性研究 Ⅰ.大豆基因型磷效率特性差异及其与土壤有效磷含量的关系
短句来源
     The Characteristics of Phosphorus Behavior at Sediment-Water Interface and Environmental Risk Assessment from Shallow Lakes
     浅水湖泊沉积物—水界面磷的行为特征与环境风险评价
短句来源
     Study on the characteristics of phosphorus adsorption and desorption in slag containing silicon
     含硅熔渣对磷的吸附与解吸特征研究
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  characteristics of phosphorus
Difference characteristics of phosphorus in Chara and two submerged angiosperm species: implications for phosphorus nutrient cyc
      
The characteristics of phosphorus excretions of zooplankton collected in spring 1974 from Stonehouse Pond, New Hampshire were studied with gel filtration, ultraviolet spectroscopy and seston incorporation.
      
Development and characteristics of phosphorus-accumulating microbial granules in sequencing batch reactors
      
Geochemical characteristics of phosphorus near the Huanghe River estuary
      
The characteristics of phosphorus removal in an anaerobic/aerobic sequential batch biofilter reactor.
      


Deficient in soil phosphorus is an important problem of soil fertility in whole area of Shaanxi province.The results obtained from the study indicated that the total content of soil phosphorus range 0.04 to 0.25%, averaging 0.12%. Study on forms of soil phosphorus indicated that the content of organic phosphorus are low,with an average 14%, however,the content of mi n phosphorus is very high, average 68%,the content of Ca-P in which makes up 47-82% of the total phosphorus...

Deficient in soil phosphorus is an important problem of soil fertility in whole area of Shaanxi province.The results obtained from the study indicated that the total content of soil phosphorus range 0.04 to 0.25%, averaging 0.12%. Study on forms of soil phosphorus indicated that the content of organic phosphorus are low,with an average 14%, however,the content of mi n phosphorus is very high, average 68%,the content of Ca-P in which makes up 47-82% of the total phosphorus and Al-P is very little, Ca-P and Al-P gradually reduce and Fe-P increases with the increasing weathering from the north to south. The fact shows that the phospho(?)us in the soil gradully transformed into unsoluble Fe-P. "Huang Niba" soil is another kind of soil in southern Shaanxi, in which Fe-P account to 27.3% of the total phosphorus, Ca-P 47%. The (?)esults of study on Ca-P indicated that apatite makes up 64-85% of Ca-P, Ca_3-P 10-24%, Ca_(1·2)- P 4-18%. Phosphorus supply in the soil is not adequate in Shaanxi. The content of available phosphorus in the soil ranges from zero to 34 ppm, with average value of 5.4 ppm. The study on labile-P in the soil is of great importance in Shaanxi province. It is an important index to evaluate phosphorus fertility in the soil. The study shows that the content of labile-P in "Huang Niba" soil is 10 ppm,12 ppm in "Huang mian"soil, 132 ppm in vegetable garden soil. According to the characteristic of phosphorus supply in the soil and fer- tilizerstatus in the soil, the principle of phosphorus application should be centralized deep application with completely use of moisture under the horizon, meanwhile phosphorus fertilizer should be applied with nitrogenous fertilizer and organic manure.

本文对陕西省约400个耕层土壤样品和15个土壤剖面的磷素含量、组成和供给进行系统的研究,并采用根兹布勒哥一列别捷分级系统对Ca-P的组分进行了测定.结果表明,在Ca-P级中,约64-35%是磷灰石;10-24%是Ca_3-P;Ca_(1·2),-P只占4-18%.研究表明,全省土壤有效磷的供给水平是低的,平均只有5.4ppm;Ca-P和AI-P与土壤有效磷呈正相关,与Fe-P呈负相关。本文还采用Olsen法连续测定土壤有效磷,本文谓之“土壤活性磷”。它因土壤的不同而变化较大,黄泥巴10ppm;黄绵土12ppm;(?)土33ppm;莱园土126ppm。土壤活性磷是评价土壤供磷的重要依据,土壤含活性磷高的,供磷潜势大;反之则低.根据土壤供磷潜势低和磷肥移动有限的特点,建议集中深施在根系附近和水分供应的适当位置。

In this article, the characteristics of phosphorus and the activities of phosphatase in lateritic soils developed from quaternary red clay and granite and their relationship to the soil fertility were investigated. The results indicate that the contents of total phosphorus,the available phosphorus and the activity of phosphorus in lateritic soils are low.In the constituents of inorganic phosphorus, the content of occluded phosphate is the highest, followed by ferric phosphate and...

In this article, the characteristics of phosphorus and the activities of phosphatase in lateritic soils developed from quaternary red clay and granite and their relationship to the soil fertility were investigated. The results indicate that the contents of total phosphorus,the available phosphorus and the activity of phosphorus in lateritic soils are low.In the constituents of inorganic phosphorus, the content of occluded phosphate is the highest, followed by ferric phosphate and aluminium phosphate, while calcium phosphate is the lowest.Ferric phosphate is one of the potentially phosphorous source in lateritic soils. The acidic, neutral and alkaline phosphatases are occurred, among them, the activity of acidic phosphatase the is strongest one,and some correlations-existed in them.The activity of phosphatase also correlating to the fertility of lateritic soils obviously, therefore, it can be taken as an index for the evaluation of lateritic soils fertility.

本文探讨了桂南地区发育于第四纪红色粘土和花岗岩母质的赤红壤的磷素特性、磷酸酶活性及其与土壤肥力的关系。研究结果表明,赤红壤的全磷和有效磷的含量以及磷素活度均低.无机磷的组分中闭蓄态磷酸盐含量为最高,其次为磷酸铁、磷酸铝,磷酸钙最低.磷酸铁是赤红壤的潜在磷源之一。赤红壤中含有酸性、中性和碱性磷酸酶,其中以酸性磷酸酶活性最强。这三种磷酸酶的活性之间存在一定相关,磷酸酶活性与赤红壤的肥力因素相关显著,可见,磷酸酶活性可作为评价土壤肥力的指标之一.

An analytical calculation is made on the basis of the experimental data from the oxidizing process of phosphorus in the combined-blowing converter. The oxidizing characteristics of phosphorus in the combined-blowing converter with natural gas as cooling medium is revealed and the advantages of the combined-blowing process is theoretically explained.

根据复吹转炉冶炼中磷铁水的试验数据,对磷氧化过程进行了分析计算,揭示了顶底吹氧并以天然气为底枪冷却介质的复吹转炉中,磷的氧化特性,从理论上阐述了此方法的优越性。

 
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