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Phosphorus Transfer and Distribution in a Soybean-Citrus Intercropping System

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Pedosphere 2006年第4期16卷 435-443页

作者： ZHOU Wei-Jun WANG Kai-Rong ZHANG Yang-Zhu YIN li-Chu li he-song College of Resources and Environment Hunan Agricultural University Changsha 410128 （China） Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha 4 10125 （China）

A mini-plot field experiment was conducted on a loamy clay Oxisol to compare and evaluate P absorption and transfer in plant organs and P movement in soil profile at three P application depths under the soybean-citrus intercropping versus the monoculture using a ^32p tracer technique. Total P absorption （Pt） by soybean and P accumulation （Pa） in soybean organs decreased significantly （P 〈 0.05） under the intercropping in contrast to the monoculture. With intercropping, when ^32p was applied in topsoil （15 cm soil layer）, total ^32p absorption （^32pt） in soybeans was significantly lower （P 〈 0.05）, but when ^32p was applied to deeper soil layers （35 or 55 cm soil layer）, ^32pt in soybeans was significantly greater （P 〈 0.05）. The percentage of P in leaves to total P （Pa/Pt） and 32p in leaves to total ^32p （^32pa/^32pt） for soybean were ≥ 25% and those of root ≥ 12%. When P was applied ia topsoil and 55 cm soil layer, no significant differences were found between intercropping and monoculture for Pt of citrus. The P absorbed by citrus was transferred rapidly to the growing organs of aboveground during the experiment, and the speed of transferring to the growing organs slowed when P was applied to the deeper soil layers. In intercropping, P mobility was heightened in the soil profile, and P in deeper soil layers moved up to topsoil more rapidly.

关键词： agroforestry ecosystem citrus monoculture, ^32p fate soybean

Characteristics of the Mesophyllous Cells in the Sheaths of Rice (Oryza sativa L.)

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Agricultural Sciences in China 2011年第9期10卷 1354-1364页

作者： GUO Zhao-wu DENG Hua- feng li Shu-yuan XIAO Lang-tao HUANG Zhi-yuan he Qiang HUANG Zhi-gang li he-song WANG Ruo-zhong School of Chemistry and Biological Engineering Changsha University of Science ＆ Technology Changsha 410114 P.R.China Hunan Hybrid Rice Research Center Changsha 410125 P.R. China Beijing Deweizhi Biological Engineering Technology Co. Ltd. Beijing 100016 P.R. China Hunan Provincial Key Laboratory of Phytohormones and Growth Development Hunan Agricultural University Changsha 410128 P.R. China

The photosynthesis of rice sheath plays a significant role to furnish rice yield, and it is accounted for 10 to 20% of the final yield. But, limited studies have been done to address this phenomenon and to characterize the mesophyllous cells of rice sheath and how it may attribute to the rice yield. In this paper, super hybrid rice liangyoupeijiu, its parents Wumang 9311 and Peiai 64S, and hybrid rice Shanyou 63 were studied as the experimental materials, and the characteristics of the mesophyllous cells of rice sheaths were examined by microscopic and super-microscopic observation as well as chlorophyll absorption spectrums. The results showed that rice sheath was rich in the intact mesophyllous cells full of chloroplasts, grana and thylakoids, which were much the same as those of rice blade. The absorption spectrum curves of the Chl. a and b of the sheaths were similar to those of the blades. The stomatal density in the outer epidermises of the sheaths was comparable to those in the up- and down-epidermises of the blades. The significant tests proved that the amount of chloroplast per mesophyllous cell of the sheaths was almost the same as those of the blades, and the mesophyllous cells in the sheaths were also rich in chlorophylls. The chlorophyll content of rice sheath reached about 50% of the chlorophyll content of rice blade, and the P, of the sheath/the blade ranged from 13.60 to 34.57%. Therefore, rice sheath was also full of the intact photosynthetic apparatus similar to those in rice blade, and had capabilities of photosynthesis. The statistical analysis revealed that the physiological senescence of the photosynthetic apparatus in both the sheath and the blade of liangyoupeijiu was significantly slower than those of the other varieties at the late stages. The profuse grain-filling stage was an inflexion point of the physiological senescence of the chloroplasts and the chlorophylls of both the blades and the sheaths.

关键词： rice sheath mesophyllous cell characteristic

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： song he li li Sai Wang Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

Simulation of alumina dissolution and temperature response under different feeding quantities in aluminum reduction cell

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Journal of Central South University 2019年第8期26卷 2119-2128页

作者： li Si-yun li Mao HOU Wen-yuan li he-song CheNG Ben-jun School of Energy Science and Engineering Central South University

In the feeding process of aluminum electrolytic, feeding quantity of alumina affects eventually dissolved quantity at the end of a feeding cycle. Based on the OpenFOAM platform, dissolution model coupled with heat and mass transfer was established. Applying the Rosin-Rammler function, alumina particle size distribution under different feeding quantities was obtained. The temperature response of electrolyte after feeding was included and calculated, and the dissolution processes of alumina with different feeding quantities (0.6, 0.8, 1.0, 1.2, 1.4, 1.6 kg) after feeding were simulated in 300 kA aluminum reduction cell. The results show that with the increase of feeding quantity, accumulated mass fraction of dissolved alumina decreases, and the time required for the rapid dissolution stage extends. When the feeding quantity is 0.6 kg and 1.2 kg, it takes the shortest time for the electrolyte temperature dropping before rebounding back. With the increase of feeding quantity, the dissolution rate in the rapid dissolution stage increases at first and then decreases gradually. The most suitable feeding quantity is 1.2 kg. The fitting equation of alumina dissolution curve under different feeding quantities is obtained, which can be used to evaluate the alumina dissolution and guide the feeding quantity and feeding cycle.

关键词： alumina dissolution heat and mass transfer particle size distribution temperature response numerical

Plant Phosphorus Uptake in a Soybean-Citrus Intercropping System in the Red Soil Hilly Region of South China

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Pedosphere 2009年第2期19卷 244-250页

作者： ZHOU Wei-Jun ZHANG Yang-Zhu WANG Kai-Rong li he-song HAO Yin-Ju liU Xin College of Resources and Environment Hunan Agricultural University Changsha 410128 China Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha 410125 China

A field microplot experiment was conducted in the red soil hilly region of South China to evaluate plant phosphorus (P)uptake under soybean and citrus monoculture and the soybean-citrus intercropping system using the 32P tracer technique.P fertilizer was applied at three depths(15,35,and 55 cm).The experimental results showed that the planting pattern and 32P application depth significantly affected the characteristics of P uptake by soybean and *** the soybean-citrus intercropping system,considerable competition was observed when the 32P fertilizer was applied to the topsoil(15 cm);therefore,the 32P recovery rate declined by 41.5%and 14.7%for soybean and citrus,and 32P supplying amount of topsoil to soybean and citrus decreased by 346.8 and 148.1 mg plot-1,respectively,compared to those under the ***,32P recovery of soybean was promoted when 32P fertilizer was applied to the deeper soil layers (35 and 55 cm)under soybean-citrus *** the soybean monoculture,32P fertilizer could hardly be used by soybean when 32P fertilizer was applied at the 55 cm depth or below,with the recovery rate being less than 0.1%;it was up to 0.253%by soybean under *** higher P recovery of soybean under soybean-citrus intercropping when P was applied in the deeper soil layers was because part of the P nutrient that the citrus absorbed from the deeper soil layers could be released into the topsoil and then it could be used by the soybean.

关键词： citrus intercropping monoculture P uptake soybean

A Single Photon Produces General W State of N 0ubits and Its Application

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Communications in Theoretical Physics 2007年第7期48卷 75-78页

作者： MEI Di li Chong song he-Shan Department of Physics,Dalian University of Technology,Dalian 116023,China Department of Physics Dalian University of Technology Dalian 116023 China

Based on the Wu's scheme[***,***,***,and ***,***.A 73(2006)012310],we prepare the general N-qubit W *** find that the concurrence of two qubits in general N-qubit Wstate is only related to their coefficients and we successfully apply the general N-qubit W state to quantum state transferand quantum state prepare like that in two-qubit system.

关键词： N-qubit W state concurrence quantum state transfer

Classification evolution algorithm based on cloud model

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通讯和计算机（中英文版） 2009年第10期6卷 8-16页

作者： li he-song ZHANG Guang-wei li De-yi li Xiang-mei State Key Lab of Software Development Environment Beihang University Beijing 100083 Branch bureau 27th Mailbox 15th 2# Lanzhou 732750 China

扭振测量误差分析及实用发动机高精度扭振测量仪的研制

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内燃机工程 2005年第5期26卷 77-80页

作者：周迅俞小莉李松和浙江大学机械与能源工程学院杭州310027

从测量原理和误差分析的角度出发,提出了提高扭振测量精度的可行途径。在此基础上进行了实用扭振测量仪的研制和试验研究。与国内同类仪器相比,研制的测量仪主要有以下两个方面的特色:(1)通过应用USB接口解决了测量采集数据的传输瓶颈... 详细信息

从测量原理和误差分析的角度出发,提出了提高扭振测量精度的可行途径。在此基础上进行了实用扭振测量仪的研制和试验研究。与国内同类仪器相比,研制的测量仪主要有以下两个方面的特色:(1)通过应用USB接口解决了测量采集数据的传输瓶颈和传输可靠性问题;(2)应用大缓冲区低延迟误差计数电路并结合采集电路的紧凑设计有效减小了测量电路本身的系统误差,提高了测量的精度。试验结果表明:测量仪工作性能较好,工作可靠,可以满足发动机在各种工况下扭振测量的要求。

关键词：内燃机扭转振动误差分析测量可靠性

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一种基于云模型的主观信任评价方法

软件学报 2010年第6期21卷 1341-1352页

作者：王守信张莉李鹤松北京航空航天大学软件工程研究所北京100191 北京航空航天大学软件开发环境国家重点实验室北京100191

如何通过直观、简单和有效的评价方法,辅助消费者完成网上交易中的信任决策,已成为该领域需要面对和解决的一个基本问题.在信任云的基础上,提出一种基于云模型的主观信任量化评价方法.使用主观信任云的期望和超熵对信任客体信用度进行... 详细信息

如何通过直观、简单和有效的评价方法,辅助消费者完成网上交易中的信任决策,已成为该领域需要面对和解决的一个基本问题.在信任云的基础上,提出一种基于云模型的主观信任量化评价方法.使用主观信任云的期望和超熵对信任客体信用度进行定量评价,进而设计一种信任变化云刻画信任客体信用度的变化情况,为进一步的信任决策提供依据.对实验数据的分析表明,该方法能够有效地支持信任主体的主观信任决策过程,对主观信任评价研究进行了有益的探索和尝试.

关键词：主观信任云模型信任决策信任变化