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   土壤非交换性钾 在 农艺学 分类中 的翻译结果: 查询用时:0.917秒
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土壤非交换性钾
相关语句
  non-exchangeable potassium
    RELEASE RATES OF NON-EXCHANGEABLE POTASSIUM IN SELECTED SOILS FROM NORTHERN CHINA
    我国北方主要土壤非交换性钾释放速率的研究
短句来源
  non-exchangeable potassium
    RELEASE RATES OF NON-EXCHANGEABLE POTASSIUM IN SELECTED SOILS FROM NORTHERN CHINA
    我国北方主要土壤非交换性钾释放速率的研究
短句来源
  “土壤非交换性钾”译为未确定词的双语例句
    The better extracting method and kinetic model for describing the release and rate of soil non exchangeable K were discussed with Elovich, Second order kinetic models by 0 50 mol· L -1 HNO 3, 0 01 mol·L -1 oxalic acid and H resin successive extraction under constant temperature and pot exhaustion of ryegrass.
    采用Ca2 + 饱和土壤的 0 50mol·L- 1硝酸、0 0 1mol·L- 1草酸和氢质阳离子交换树脂恒温连续提取法 ,利用Elovich和二级动力学模型 ,结合生物吸钾试验 ,研究探讨了描述土壤非交换性钾释放及其速率较为理想的连续提取法及其动力学模型。
短句来源
    Study on the Availability of Nonexchangeable Potassium in Cultivated Soils
    耕作土壤非交换性钾有效性的研究
短句来源
    Study on the kinetics and rate of soil nonexchangeable K release by three various extraction
    不同提取方法土壤非交换性钾释放动力学及其速率的研究
短句来源
    Elovich equation,zero order equation ,first order equation and parabolic equation was used to describe the nonexchangeabe k releasing process. Then the best model was selected to describe nonexchangeable k release and its velocity.
    利用Elovich方程、零级方程、一级方程和抛物线扩散方程对土壤的累积释放量进行模拟,研究探讨了描述土壤非交换性钾释放及其速率较为理想的动力学模型。
短句来源
    Studies on the pot experiments with three different potassium supply soils indicated that wheat had stronger ability of utilizing soil nonexchangeable potassium and much higher utilization rate of potassium fertilizer than vetch.
    在温室盆栽条件下,研究了小麦和苕子在不同土壤(黑淤土、高砂土、白土)上的吸钾特性与钾肥肥效、作物根系参数变化间的关系。 初步结果表明:小麦吸钾能力大于苕子,主要是前者利用土壤非交换性钾的能力较强。
短句来源
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  non-exchangeable potassium
Mobilization of non-exchangeable potassium and sodium in a calcareous soil during plant growth
      
It is a crude measure of non-exchangeable potassium; the higher the value the greater the potassium reserve in the clay minerals.
      
  non-exchangeable potassium
Mobilization of non-exchangeable potassium and sodium in a calcareous soil during plant growth
      
It is a crude measure of non-exchangeable potassium; the higher the value the greater the potassium reserve in the clay minerals.
      


This paper deals with the potassium status and K-bearing

本文研究了我国南方一些土壤的钾素状况及其含钾矿物。结果表明,土壤含钾矿物的含量和种类因成土母质和土壤发育程度而异。花岗岩发育土壤的含钾矿物随粒径增大而增加(>50μ除外),沉积岩发育的土壤情况相反。土壤的非交换性钾与云母类矿物含量呈较好的相关性(r=0.669 ̄*),交换性钾与土壤CEC呈极显著正相关(r=0.808)。不同粒级对土壤全钾量贡献不一,花岗岩发育土壤的全钾量主要集中于10—50μ和>50μ粒级中,沉积岩发育土壤的全钾量主要集中于<2μ和2-10μ粒级中。

Studies on the pot experiments with three different potassium supply soils indicated that wheat had stronger ability of utilizing soil nonexchangeable potassium and much higher utilization rate of potassium fertilizer than vetch. The significant differences of root physiological perameters were in the total and active absorption surface areas which were affected by soil potassium supply condition and hud markedly positive correlation with total uptake of soil potassium and shoot yield. There was also a significant...

Studies on the pot experiments with three different potassium supply soils indicated that wheat had stronger ability of utilizing soil nonexchangeable potassium and much higher utilization rate of potassium fertilizer than vetch. The significant differences of root physiological perameters were in the total and active absorption surface areas which were affected by soil potassium supply condition and hud markedly positive correlation with total uptake of soil potassium and shoot yield. There was also a significant correlation between the root activity, root weight and soil potassium uptake of the same crop. The cation exchange capacity of unit root weight of wheat was smaller than that of vetch, which wasn't strikingly varied in the different potassium supply soils.

在温室盆栽条件下,研究了小麦和苕子在不同土壤(黑淤土、高砂土、白土)上的吸钾特性与钾肥肥效、作物根系参数变化间的关系。初步结果表明:小麦吸钾能力大于苕子,主要是前者利用土壤非交换性钾的能力较强。这两者根系的总活跃吸收表面积间的差异表现最为明显,并且与作物吸钾量、生物产量间呈显著正相关。此外,不同土壤上同种作物的根系生物产量、根系活力与作物吸钾量间也呈正相关。单位根重的阳离子交换量:苕子>小麦,它受土壤供钾状况影响较小。不同供钾水平土壤上,钾肥肥效均以小麦优于苕子,钾肥利用率也以小麦较高。

Potassium fixation by soils was studied for 25 soil samples taken from major agricultural regions of north China with 0~4000 mg K added to each kilogram of soil. Potassium fixation can be well discribed by an equation y=ax3/2 /(x3/2+b) (y is the amount of K fixed in mg/kg, x is the amount of K added in mg/kg, a is an estimation of maximum potassium fixation in mg/kg, b is a constant ). Fixation power of the various soils differred significantly, the amount of K fixed was closely related to the types and the...

Potassium fixation by soils was studied for 25 soil samples taken from major agricultural regions of north China with 0~4000 mg K added to each kilogram of soil. Potassium fixation can be well discribed by an equation y=ax3/2 /(x3/2+b) (y is the amount of K fixed in mg/kg, x is the amount of K added in mg/kg, a is an estimation of maximum potassium fixation in mg/kg, b is a constant ). Fixation power of the various soils differred significantly, the amount of K fixed was closely related to the types and the amount of clay minerals existing in the soil, and physical and chemical properties (clay content, CEC, non-exchangeable K and available K levels). Potassium fixation by soils was negatively correlated with non-exchangeable K content of the soils. Soils taken from different regions showed different K fixation characteristics. When K application level was below 1200mg/kg soil, capacity of K fixation of these tested soils followed a general order: soils from northwestern region < soils from northeastern region < soils from northcentral region;while K added was above 1200mg/kg, K fixation power of the soils showed a general tendency: soils taken from northwestern region < soils from northcentral region < northeastern region. When 400~4000 mg K was added to one kilogram of soil, on average, 133 ~ 348 mg / kg were fixed by soils from northwestern region with an average maximum fixation of 372 mg/kg; 235~1001mg/kg were fixed by soils from northcentral region with an average maximum fixation of 1121 mg/kg; 199-1254 mg/kg were fixed by soils from northeastern region with an average maximum fixation of 1519 mg/kg soil.

本文研究了我国北方农区主要土壤的固钾能力。结果表明,在施K量0-4000mg/kg范围内,土壤固钾量与施钾量的关系符合方程y=ax~(3/2)/(x~(3/2)+b)。不同土壤固钾量相差很大,其固钾量与土壤矿物学性质和理化性质(粘粒含量、CEC、非交换性钾和速效钾含量)有关,与原始土壤非交换性钾含量呈显著负相关(不同施钾水平下土壤固钾量与非交换性钾含量之间的相关系数均在-0.6769以上)。供试土壤固钾能力表现出一定的地带性分布规律。施K1200mg/kg以下时土壤固钾能力的一般趋势是取自西北的土壤<取自东北的土壤<取自华北的土壤;而施K1200mg/kg以上时土壤固钾能力,从西向东呈逐渐增加的趋势。取自西北地区的土壤,固钾量(施K量为400~4000mg/kg,下同)平均为133~348mg/kg,最大同钾量平均是372mg/kg;取自华北地区的土壤,其固钾量平均为235~1001mg/kg,最大固钾量平均是1121mg/kg;取自东北地区的土壤,其固钾量平均为199~1254mg/kg,最大固钾量平均是1519mg/kg。

 
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