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   再循环指数 的翻译结果: 查询用时:0.436秒
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再循环指数
相关语句
  recycling index
     2. At present, the recycling index of N, P, K is, respectivlely, 27.92%, 48.79% and 46.62%.
     2.目前,系统中氮、磷、钾的再循环指数分别为27.92%、48.79%和46.62%,系统稳定后,氮减至27.65%。
短句来源
     2.At present,the recycling index of N,P,K is,respectivlely,27.92%,48,79% and 46.62%. In their stable points that will be 27.65%,49.33% and 47.55%.
     2.目前,系统中氮、磷、钾的再循环指数分别为27.92%、48.79%和46.62%,系统稳定后,氮减至27.65%,磷、钾分别增至49.33%和47.55%。
短句来源
     Mean while, many new characteristic parameters such as litter equilibrium index and soil nutrient equilibrium index have been proposed and the calculation tenet of Deanglis's nutrient recycling index applied in forestland has been elaborated.
     同时在此基础上又提出了枯落物平衡指数、土壤养分平衡指数等新的特征参数 ,并阐述了将 Deanglis的养分再循环指数概念应用于林地的计算原理。
短句来源
  cycling index
     Eco-network is a structural model which simulates the flow of material and energy in ecosystem, CI (Cycling Index) reflects the recycling feature of material flow.
     生态网络是对生态系统中物质、能量流动模拟的结构模型,再循环指数CI反应了物质在生态网络中的再循环特征。
短句来源
  recycling indices
     The sensitivity Analysis of Recycling Indices of Nitrogen,Phosphorus and Potassium in an Agroforestry Ecosystem of the Populus euramericana-Triticum sativum-Zea mays
     农林业复合生态系统沙兰杨-小麦-玉米群落类型氮、磷、钾再循环指数灵敏度分析
短句来源
     The sensitivities of recycling indices of nitrogen, phosphorus and potassi-um(N,P,K)in the agroforestry ecosystem of Populus euramericana-Triticum sativum-Zea mays were analyzed.
     本文对黄淮海平原豫北地区农林业生态系统沙兰杨-小麦-玉米群落类型营养元素氮、磷、钾在系统内的分布、累积、循环进行了系统的研究,并对三种营养元素的再循环指数及其灵敏度进行了分析。
短句来源
  “再循环指数”译为未确定词的双语例句
     and Its Sensitivity Analysis
     生态网络中物质流动的再循环指数及其灵敏度分析
短句来源
     Sensitivinty analysis of Recycling Indexes of Nitrogen,Phosphorus and Kalium in an Agroforestry Ecosystem of the Populus euramericana- Triticum aestivm-Zea mays Community
     农林业系统中营养元素再循环指数的灵敏度分析
短句来源
     Recycling indicis of NPK in the system Were computed as a scientific basis provided for Ihe system management.
     分别求出了N、P、K的再循环指数,从而为系统的管理提供了科学的依据。
短句来源
     According to the complexity of food chain and the nitrogen recycling indexes in different microecosystems, it is considered that the maturity and stability of the ecosystem were higher in treatments 1:0,0.5:0.5, and 0.3:0.7, but lower in the treatment 0:1 which consists of rice plantation and relaying on inorganic fertilizers only.
     农业生态系统具有多组分和牧食-碎屑复合食物链,氮素再循环指数达0.5,生态稳定性和发育程度优于单一种植系统。
短句来源
     In the present paper, a computational method about CI is given on the basis of stochastic process in detail, and the sensitivity of CI about the state variable of econetwork is formulated.
     本文从随机过程出发,推导了再循环指数CI的计算公式,并给出了CI关于生态网络变量的灵敏度。
短句来源
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  recycling index
Specific Knowledge on Recycling Index and Participants' Responses 25 Table 14.
      
  cycling index
A cycling index of 44% indicated a fairly closed system where most components were important in determining the overall structure of the system.
      


The proposition of the compartment model method brings us bopes that with this method We can solve she problem of matter cycling in agroecosystem quantitatively. In this paper based on data collected in our experiments and surveys a compartment model Was built, and the behavior of agroarosystem in nutrient cycling was simulated and predicted using computer for Doudian village in Beijing suburb, With the model tested in different decisions. It Was proved mathematically that the system Was tending lottfards a...

The proposition of the compartment model method brings us bopes that with this method We can solve she problem of matter cycling in agroecosystem quantitatively. In this paper based on data collected in our experiments and surveys a compartment model Was built, and the behavior of agroarosystem in nutrient cycling was simulated and predicted using computer for Doudian village in Beijing suburb, With the model tested in different decisions. It Was proved mathematically that the system Was tending lottfards a steady state and was observable as Well as coutrolable. Sensitivity of the system to perturbation Was highest with N and decreasing with P and K respectively. Recycling indicis of NPK in the system Were computed as a scientific basis provided for Ihe system management. The method of building a compartment model Was discussed in the paper, which suggests an improved modification of syslem analysis, with its shortcomings and limitations indicated.

分室模型方法的出现,给定量解决农业生态系统物质循环的问题带来了希望。本文在试验测定与调查研究的基础上,通过建立分室模型,借助电子计算机,对北京郊区窦店村农业生态系统物质(N、P、K)循环在多种决策下的行为进行了模拟和预测。从数学上证明了本系统是趋向于渐近稳态的,是可控制的和可观测的。N对干扰最为敏感,P次之,K最小。分别求出了N、P、K的再循环指数,从而为系统的管理提供了科学的依据。本文对分室模型方法进行了较为全面的探讨,在进一步完善了这一系统分析方法的同时,也指出了它的不足和局限性。

~(15)N labelled technique was used for understanding the transferring and cycling of nitrogen in micro-agroecosystems with soil-ryegrass-rabbits-rice compartments and soil rice compartments. Preliminary results showed that the utilizational rate of (NH_4)_2SO_4 by ryegrass was 59.36% for the above ground portion and 9.79% for roots. As ~(15)N labelled ryegrass was comsumed by rabbit,the ~(15)N labelled recovery rates in feces and urine collected were 11.78% and 17.95% respectively. Rabbit excrement-nitrogen...

~(15)N labelled technique was used for understanding the transferring and cycling of nitrogen in micro-agroecosystems with soil-ryegrass-rabbits-rice compartments and soil rice compartments. Preliminary results showed that the utilizational rate of (NH_4)_2SO_4 by ryegrass was 59.36% for the above ground portion and 9.79% for roots. As ~(15)N labelled ryegrass was comsumed by rabbit,the ~(15)N labelled recovery rates in feces and urine collected were 11.78% and 17.95% respectively. Rabbit excrement-nitrogen was integrated with inorganic fertilizer nitrogen in different proportions as 1:0, 0.5:0.5, 0.3:0.7 and 0:1 for rice culture. Results showed that the uptake of nitrogen by rice plant was 67—70% from the soil and 30—33% from fertilizers.The utilizational rates by rice plant were increased with the proportion of inorganic nitrogen. They were 36.94%, 40.52%, 40.73% and 43.91% for treatment 1—4. The yield of rice grain decreased with the proportion of inorganic nitrogen, however. The functional effects of organic fertilizer on the ecosystems were:(l) promoting the ear and root development of rice plant;(2) increasing the transferring ability of nitrogen from straw to rice grain, especially in 0.5:0.5; (3)maintaining inorganic fertilizer nitrogen in soil; (4)decreasing losses of nitrogen to air and waters. In treatment 0.3:0.7, the utilizational rate of organic fertilizer nitrogen was enhanced, and no considerable increment of utilizational rate of inorganic fertilizer nitrogen was found in the study. According to the complexity of food chain and the nitrogen recycling indexes in different microecosystems, it is considered that the maturity and stability of the ecosystem were higher in treatments 1:0,0.5:0.5, and 0.3:0.7, but lower in the treatment 0:1 which consists of rice plantation and relaying on inorganic fertilizers only.

本文应用~(15)N示踪法研究了有机态和无机态肥料氮在微型农业生态系统中循环的机理,以及配施下各自的功能和相互影响。初步结果表明,在土壤-黑麦草-兔亚系统中,草对硫铵~(15)N利用率达59.36%;以草饲兔,所收集兔粪~(15)N回收率为11.78%,尿为17.98%。兔粪尿N与硫铵N以1:0,0.5:0.5,0.3:0.7和0.1配施种稻,结果表明,在土壤-水稻亚系统中:(1)0.5:0.5配施促进穗头和根系发育;(2)稻株吸收有机态和无机态肥料N的比例,受配施比例的影响;(3)与单施无机肥料氮比较,配施下无机肥料氮利用率未提高或甚至下降;(4)0.3:0.7配比使有机态肥料N利用率提高;(5)0.5:0.5配比,有机肥能明显地促进无机态肥料N从秆向谷运输;(6)有机肥使无机态肥N在土壤中的固化作用增加,从而使无机肥料氮向环境转移量下降。农业生态系统具有多组分和牧食-碎屑复合食物链,氮素再循环指数达0.5,生态稳定性和发育程度优于单一种植系统。

In this paper, the authors analysed the macroscopic characteristics of circulation of N, P, K of the agroecosystem in Taihu Lake area, Jiangsu province by using the compartment model theory. 1. The agroecosystem is stable and N, P, K will reach the stable point in the years of 2020, 2007 and 2566 respectively. 2. At present, the recycling index of N, P, K is, respectivlely, 27.92%, 48.79% and 46.62%. In their stable points that will be 27.65%, 49.33% and 47.55%. 3. In the present situation, the storage and...

In this paper, the authors analysed the macroscopic characteristics of circulation of N, P, K of the agroecosystem in Taihu Lake area, Jiangsu province by using the compartment model theory. 1. The agroecosystem is stable and N, P, K will reach the stable point in the years of 2020, 2007 and 2566 respectively. 2. At present, the recycling index of N, P, K is, respectivlely, 27.92%, 48.79% and 46.62%. In their stable points that will be 27.65%, 49.33% and 47.55%. 3. In the present situation, the storage and output of N, P are increasing and those of K are decreasing year by year. 4. The effect of input of N on the system funciton is the most important and that of P is the next. 5. Husbandary subsystem is the most sensitive part to the input of the system.

作者应用分室模型理论,对江苏太湖地区农业生态系统中氮、磷、钾转化的特征进行了宏观分析,结果表明: 1.该系统是稳定的,而且是渐近稳定。氮、磷、钾将分别在2020、2007和2566年达到稳定点,前二者渐增,后者逐减。 2.目前,系统中氮、磷、钾的再循环指数分别为27.92%、48.79%和46.62%,系统稳定后,氮减至27.65%。磷、钾分别增至49.33%和47.55%。 3.当前状况下,氮、磷的输出和库存逐年增加,钾逐年减少。 4.氮素的输入效应最大,磷次之。 5.畜牧亚系统对外界的输入变化反应最快,依赖性最强。

 
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