Light Simplified Cultivation Techniques of Wide Row and Double Ridge with Filming, Fertilizing and Sowing on One for Foxtail Millet

In view of the problems of completely depending on rain, low and unstable yield and complicated planting of dry land foxtail millet, the light simplified cultivation techniques of wide row and double ridge with filming, fertilizing and sowing on one for foxtail millet was formed through the integration of plastic film mulching technology and mechanized production technology by Institute of Millet crops of Hebei Academy of Agriculture and Forestry Sciences, and the techniques were introduced from the key technologies of pre-sowing preparation, sowing, supporting equipment, field management, harvesting, plastic film recycling.

Simplified heavy metal staining techniques demonstrated with Fast Plant leaf tissue

Fast Plant(Brassica rapa,Cruciferae)leaf tissuefixed in glutaraldehyde-acrolein and post-fixed in os-mium,was examined for response to several easily-prepared heavy metal stains.Lead and uranium,separately and in combination,gave typical resultsacross the spectrum of cell organellets.As a single stainfollowing osmium,bismuth produced images seeminglyequivalent to lead and uranium.Phosphotungstic acidproduced very good membrane delineation but produceda washed-out background image similar to that from leadstaining.Carbohydrate compounds were especiallyresponsive to ruthenium;the cytoplasm and the matrixof all organelles were also stained very well.Theprocedures were no more demanding than traditionalstaining methods and may be easily used in research andteaching.Fast Plant materials are a reliable,quick andeasy source of living material.

Simplified analysis of frame structures with viscoelastic dampers considering the effect of soil-structure interaction

In this study, simplified numerical models are developed to analyze the soil-structure interaction （SSI） effect on frame structures equipped with viscoelastic dampers （VEDs） based on pile group foundation. First, a single degree-of- freedom （SDOF） oscillator is successfully utilized to replace the SDOF energy dissipated structure considering the SSI effect. The equivalent period and damping ratio of the system are obtained through analogical analysis using the frequency transfer function with adoption of the modal strain energy （MSE） technique. Aparametric analysis is carried out to study the SSI effect on the performance of VEDs. Then the equilibrium equations of the multi degree-of-freedom （MDOF） structure with VEDs considering SSI effect are established in the frequency domain. Based on the assumption that the superstructure of the coupled system possesses the classical normal mode, the MDOF superstructure is decoupled to a set of individual SDOF systems resting on a rigid foundation with adoption of the MSE technique through formula derivation. Numerical results demonstrate that the proposed methods have the advantage of reducing computational cost, however, retaining the satisfactory accuracy. The numerical method proposed herein can provide a fast evaluation of the efficiency of VEDs considering the SSI effect.

A Training System of Pear Trees for Simplified High-density Cultivation

In view of the deficiencies of training technologies during constructing pear orchards by modern simplified dense-planting cultivation with ordinary pear seedlings widely used in production,a simple and easy-to-operate training method was proposed,mainly including constructing fence nets,determining low main trunks,leaving buds at the northwest position,multiple bud removal,winding and notching,simplified branch supporting,and simplified branch pulling.

UHF波段功率放大器设计

为某UHF波段的发射机设计一款己类功率放大器,工作于频段430~455 MHz,介绍了谐波控制和匹配网络的设计。在放大器输出匹配网络前添加谐波控制电路,通过对晶体管漏极的谐波控制生成己类放大器的工作波形。同时,在输入、输出阻抗是复阻抗的情况下,使用简化实频技术对电路进行匹配,提高了匹配网络的效率。测试结果显示,该放大器输出功率达60 dBm,对应的增益为20 dB,PAE为79%,达到设计要求。

Reply to Comments on "Structural,Optical,and Electrical Properties of Zn-Doped CdO Thin Films Fabricated by a Simplified Spray Pyrolysis Technique'' by K.Usharani and A.R.Balu published in Acta Metall.Sin.(Engl.Lett.) 28(1),64–71(2015)

Following are the comments for the queries raised by Prof. Pawel E. Tomaszewski on our published paper entitled ＂Structural, Optical, and Electrical Properties of Zn-Doped CdO Thin Films Fabricated by a Simplified Spray Pyrolysis Technique＂ by K. Usharani and A.R. Balu published in Acta Metall. Sin.

Pulse reference-based compensation technique for intensity-modulated optical fiber sensors

We propose a compensation technique based on pulse reference for intensity-modulated optical fiber sensors that can compensate the power fluctuation of the light source, the change of optical components transmission loss, and the coupler splitting ratio. The theoretical principle of this compensation technique is analyzed and a temperature sensor based on fiber coating-covered optical microfiber is carried out to demonstrate the compensation effect. The system noise is measured to be 0.0005 dB with the temperature sensitivity reaching -0.063 dB/℃, and the output drift is 0.006 dB in 2 h at room temperature. The output shows a slight variation （0.0061 dB） when the light source and the common liKht path suffer a 3 dB attenuation fluctuation.

Comments on "Structural,Optical,and Electrical Properties of Zn-Doped CdO Thin Films Fabricated by a Simplified Spray Pyrolysis Technique'' by K.Usharani and A.R.Balu Published in Acta Metall.Sin.(Engl.Lett.) 28(1),64–71(2015)

The commented paper [1] presents the results on structural, optical, and electrical properties of Zn-doped CdO thin films. Unfortunately, there are several mistakes and errors not found by any of referees. It is necessary to show these mistakes or misleading statements to avoid their use in the future papers by authors and other peoples.

抗除草剂谷子品种榆谷11的选育与轻简化栽培

榆谷11是榆林市农科院与河北省农林科学院谷子研究所利用♀长农39号、♂“冀谷19×(谷丰2号×03-528-4)”杂交选育的抗拿捕净(烯禾啶)谷子新品种。该品种优质、高产、抗病、抗除草剂、中矮秆、宜机收;2019-2020年,榆林市多点试验中,榆谷11平均产量4318.5 kg/hm^(2);抗白发病,中抗谷瘟病,抗旱性、抗倒性均1级。适宜于在陕西榆林和同类型区域春播种植。

平原地区金银花轻简高效栽培技术规程

为了实现平原地区金银花标准化和规范化种植,提高金银花品质、产量及种植效益。经过多年试验示范和生产实践,从范围、规范性引用文件、术语和定义、适宜条件、整地施肥、繁殖与移栽、整形、修剪、田间管理、病虫害防治和采收等农艺作业流程和质量要求等方面总结制定了平原地区金银花轻简高效栽培技术规程。

油菜轻简化栽培技术

油菜是重要的油料作物,市场需求量较大,保证油菜生产安全意义重大。传统栽培技术模式下,油菜栽培流程繁琐复杂,劳动投入高,影响油菜种植经济效益。在此背景下,推广应用油菜轻简化栽培技术具有重要的现实意义。以赤水市为例,着重对油菜轻简化栽培技术要点展开了深入探析。

谷子简化栽培技术综合评价

谷子简化栽培技术是近几年推广的新技术,在河北、河南、山东等华北夏谷区有一定的种植规模。为评价这种新品种及其配套技术的综合效益,通过构建谷子品种优属度评价指标体系,以熵权分析方法对实地调查对象河北武安、河南洛阳的示范情况进行多因素综合指标评价。该技术特有的化学除草、间苗带来的省工省力等优越性得到农户的青睐,这也导致其化肥使用费用增多;另外,简化栽培技术品种效益超过了玉米的效益,虽然在产量和农民种植意愿上没有玉米突出,但综合评价指标值超过玉米。

谷子轻简化栽培技术研究

改变谷子常规栽培模式、试验研究集化学控制与机械化生产于一体的轻简化栽培技术是山西省节约劳动力投入,提高谷子品质与产量,扩大谷子种植面积,发展以谷子为龙头的小杂粮发展战略的必然选择。为验证谷子轻简化栽培技术在山西省春谷区的可行性,2012—2014年在山西省农业科学院谷子研究所和沁县册村镇西北村,以常规种植技术为对照,对轻简化栽培技术效果进行了研究。结果表明,轻简化栽培与常规栽培相比,谷子的株高、穗长等生物学特性无明显变化;产量和品质差异不显著;但可减少用工投入84.05%,节本增效效果显著,适宜在山西省春谷区推广应用。

冬小麦撒播简化高产栽培技术的研究与应用

通过对小麦撒播栽培技术及其增产机理进行系统研究 ,结果表明 ,撒播栽培利于冬前幼苗生根增蘖 ,提高成穗率 ;后期单茎绿叶面积大 ,光能利用率高 ,利于提高粒重 ;同时具有省力、省工、简化栽培的特点 。

质量矩控制技术的机理分析及方程简化研究

针对质量矩控制技术的动力学问题,提出了质量矩控制导弹的动力学模型,通过对导弹各参数的理论和数值计算分析,对影响导弹快速响应的主要因素在不同的条件下进行研究,分析了质量矩控制方法迅速改变弹体姿态的能力;在自旋速度满足一定的条件下通过对模型参数的摄动分析,得到质量矩控制导弹的简化动力学模型,仿真分析表明该模型是非线性控制系统分析、设计的基础。

聚合物驱现场配制工艺技术

聚合物地面建设因其配注工艺复杂 ,要求高 ,设备数量多 ,较二次加密建设投资增长幅度大 ,为降低聚驱地面建设投资 ,开展了一系列聚驱工艺评价和简化工艺现场试验 ,取得了较好的效果。

水电站边坡施工期4D安全信息模型研究与应用

鉴于以往边坡施工期安全信息管理及可视化分析方面的研究中还存在工程模型及信息动态属性描述不够、安全信息表达不全面等问题,通过引入4D技术和安全信息模型,提出水电站边坡施工期4D安全信息模型的建立方法和实现过程,重点研究了边坡信息几何载体模型的建立、安全信息的数据库存储与可视化显示以及进度—模型/信息动态映射算法等关键技术,最后应用C#.NET+OpenGL开发出边坡施工期安全信息动态可视化管理系统。以某水电站左岸边坡工程为例,实现该边坡施工面貌和结构安全状态的动态耦合可视化展示以及安全信息随施工进度的实时更新,直观地揭示了边坡安全状况随施工过程的演化规律,以满足工程人员对边坡施工期安全信息直观表达和实时动态可视化分析的需求。

油菜轻简化高产栽培技术

油菜(Brassica napus L.)轻简化高产栽培技术的推广,有利于减轻劳动强度,降低油菜生产投入,稳定和扩大油菜种植面积,提高农民生产效益,为农业增效、农民增收提供技术支撑,为致富脱贫提供有利条件。综述了油菜轻简化高产栽培技术的品种选择、播前准备、播种、田间管理和收获。

锂离子电池简化电化学模型:浓度分布估计

为了降低锂电池电化学模型的计算复杂度,提出基于修正边界条件的简化电化学模型,用于估计锂电池内部的电解液浓度分布.采用Pade逼近技术分析简化电化学模型解析解,可得到降阶的分子-分母型传递函数模型.分别采用19.38A和193.80A的脉冲充放电工况进行仿真对比,结果显示所提出简化模型的最大相对误差分别约为0.867%和8.670%.时域和频域模拟仿真结果表明:相比于传统电化学模型,该简化模型对电池内部电解液相的浓度分布估计具有理想的精度,同时计算复杂度得到显著优化,具备实时应用的能力.

轻简化基质育苗棉苗栽前离床期耐受生理特性研究

【目的】明确棉花轻简化基质育苗技术下的幼苗离床耐受生理相关特性,为其安全存放和运输保护提供理论支持。【方法】设置了育苗基质添加保水剂和不添加保水剂的处理,以中棉所50为材料,研究了29 d苗龄的幼苗不同离床和复水条件下的相关生理指标变化。【结果】室内条件下棉苗离床的耐受过程中,幼苗叶片逐步失水,引起从叶片外部表层细胞结构到内部生理的一系列变化,最终影响移栽成活率。其中,离床3 d内是安全期,叶片含水量的损失不到5%,且及时复水后能达到幼苗离床前初始状态的98%以上,移栽成活率均在99%以上;此时叶片表层细胞结构相对完整,细胞连接相对平滑,保卫细胞相对饱满。离床5 d为临界期,此时复水仅能达到初期的93%左右;第5至7天叶片失水最快,这个阶段相对含水率日均下降15百分点;当失水降到50%以下(11 d后)时,叶片表层细胞皱缩较严重,细胞壁皱褶明显,气孔塌陷较深,复水后恢复能力弱。失水过程中真叶内脯氨酸、丙二醛含量和过氧化物酶活力随离床时间增加而上升/增加,过氧化氢酶和超氧化物歧化酶活力变化在前5 d上升,5 d后开始下降。【结论】保水剂有利于维持离床棉苗体内水分,缓解离床期干旱胁迫。