宁夏雨养区饲用小黑麦种质适应性评价     

李昱山  王腾飞  沈笑天  王斌  李满有  倪旺  兰剑 《草原与草坪》2023,(1):65-72

【目的】筛选适宜在宁夏雨养区推广种植的饲用型小黑麦(×Triticosecale)品种(系)。【方法】采用单因素随机区组设计,测定6个小黑麦品种(系)的农艺性状、干草产量和营养品质等指标,并利用主成分分析方法(PCA)对其进行综合评价。【结果】6个小黑麦品种(系)越冬率均在85%以上,其中冀饲草1号越冬率最强,达89.80%;生育期天数基本一致,均为246～248 d;各品种(系)小黑麦农艺性状和营养指标间差异显著(P<0.05),其中冀饲草1号干草产量和粗蛋白含量最高,分别达8978.23 kg/hm²和9.53%,显著高于其他品种(P<0.05);石大1号相对饲喂价值最高,为95.26,冀饲草1号种子产量最高(5 894.44 kg/hm²);经PCA综合分析得出,小黑麦评价由高到低顺序为石大1号、冀饲草1号、鉴46、晋饲草1号、鉴47、鉴18。【结论】可选择石大1号、冀饲草1号、鉴46在宁夏雨养区种植推广。  相似文献   

机动车废气分析仪信号处理系统的智能化设计   总被引：1，自引：0，他引：1  

丁俊健  张志勇  潘景辉  阎勤劳 《农机化研究》2003,(3):209-211

提出了机动车废气分析仪的智能化组成及其实现信号处理的全过程。详细阐述了信号处理的软硬件的实现。实验结果表明：本系统克服了传统不分光红外线分析仪固有的缺陷。进一步保证了测量数据的正确性和准确性。  相似文献   

陆地棉一个丝氨酸/苏氨酸激酶蛋白基因的克隆与表达分析   总被引：3，自引：1，他引：3  

杨郁文  倪万潮  张保龙  沈新莲  张香桂  徐英俊  姚姝 《棉花学报》2006,18(3):140-144

通过RT-PCR获得一个编码棉花丝氨酸/苏氨酸激酶类似蛋白全长的cDNA片段,其编码的氨基酸序列与拟南芥ATPK3的相似度达到82%,这个基因暂被命名为GhPK1。基因全编码区包括1038个核苷酸,编码346个氨基酸的蛋白。GhPK1的编码产物在265~270个氨基酸处有一个跨膜区并可能结合在内质网膜上。GhPK1在种子和纤维中的表达水平较其它组织高。另外,GhPK1的表达量在受到盐胁迫后上升,说明GhPK1可能参与了盐胁迫反应。  相似文献   

Parameter Simulation on the Control Strategy for a Parallel Hybrid Electric Vehicle by CRUISE     

WEI Hong-mei  WANG Tong-qing  SUN Zhi-yong 《保鲜与加工》2006,(12):26-29

The purpose of a parallel hybrid electric vehicle(PHEV) is for the best energy distribution between internal-combustion engine(ICE) and electric motor though the appropriate control strategy.It can not only keep the advantage of the ultra-low emission of electric vehicles(EV),but also take advantages of the hyperbaric energy of ICE.Simulation model for PHEV is built based on CRUISE,an auxiliary control strategy is designed,and then parameter simulation study on the control strategy is performed.The simulation results show that according to the different control requirements,the vehicle performance can be improved by adjusting!the corresponding control parameters.  相似文献   

Reuolution and Research of Green Automobile     

RAN Zheng -y  TIAN Long  NI Ling  YANG Chao  CAO Wen -ming 《保鲜与加工》2002,(7):15-19

The green is as a symbol of no pollution,no public harm and environmental protection. The green automobile is the inevitable results that the automobile technique continuously developes. A new style vehicle--the green automobile is the urgent solicit of environmental protection is developed. The automobile industry can develop continuously. This article mainly discusses the importance of the green auto_mobile's research and development,the development status in quo and prospect of the green auto_mobile technique in the world,and states the relationship between the green automobile technique and environmental protection from green technical system theoretically clarify the study of green automobile,including its design and the system,the manufacture and its technology,the energy,the rebuild engineering and a series of subjects. How to evaluate the cycle and the evaluable mark of the green automobile,the prospect of green automobile are pointed out.  相似文献   

Model of Information Integrating in CIMS Based on the Object-oriented Method     

HUANG Min  HUANG Xi yue  MA Xiao xiao  NI Lin 《保鲜与加工》2002,(4):51-54

Information integrating is the most important key to CIMS,which is the base of the function integrating and all others.Because of so many kinds,so complicated structure,so many different sources and uses that the information in CIMS has,it is necessary to build a popular Information Integrating Model. The model of information integrating in the thesis bases on the enterprise model,which is presented by ISO(International Organization for Standardization).According to the object-oriented method,the process of modeling begins with classifying the information,and then describes the definition of the attributes and the structural relation of those objects. By means of the idea of Encapsulation and Inheritance,the destination of information integrating can be arrive and the model of information integrating can be set up. The model which is based on the share information is helpful to finish the function integrating and the whole CIMS' construction. Moreover,the system which is developed following such program can be reused for many times and the developing circle of CIMS can be apparently shortened,too.  相似文献   

Design of Vision System Based on Service Robot     

LIU Jing-cheng  LIAO Zhi-yong  ZHU Mu-jian  LIU Jun 《保鲜与加工》2006,(11):31-35

A vision system based on the service robot is involved. In the system, picture signal is acquired by the picture sensor OV7635. Frame memory AL422B is used as data buffer memory, while CPLD controlled the time order DSP performed. In the software system of image processing, to accomplish color image segmentation and recognition, the threshold vector judgment and improved seed-fill algorithm is introduced, and the image geometric moment is calculated during the segmenting. In order to achieve a vision servo system which composed of image-based feedback and adaptive compensation, the deduced matrix-based Jacobian from the image moment is taken as image feature. Adopted the TFT LCD is adopted to straightly disolav the result of vision recognition and vision tracing.  相似文献   

潮州三百门电厂冷却水排放的数值模拟研究     

倪培桐  江洧 《中国农村水利水电》2004,(5):25-27

海湾及潮汐河口的冷却水工程研究近年来受到人们的重视，由于受到潮汐的影响，其冷却水布置及热污染特性比河道及水库型更为复杂。采用数值模拟的方法，首先对电厂附近的潮流特性及冷却水输移扩散进行模拟计算，研究了电厂近海水域的水动力结构及其对冷却水排放的影响，给出电厂取水温升及热污染范围，为电厂取水设计工作提供依据。  相似文献   

新陈代谢GM(1,1)模型在兵团农机总动力预测中的应用   总被引：1，自引：0，他引：1  

石玉梅  陈永成  马本学  李智勇 《农业装备与车辆工程》2006,(11):23-24

借助灰色系统理论,利用兵团农机总动力的历史数据,建立并对比分析了GM(1,1)模型和新陈代谢GM(1,1),对兵团农业机械总动力进行预测,为以后兵团农业机械化的发展提供一定的参考。  相似文献   

沼气服务体系建设探析   总被引：2，自引：0，他引：2  

倪慎军  张国强 《中国沼气》2006,24(1):45-46

“三分建七分管”，抓好沼气服务体系建设，是做大做强沼气产业的根本保证。目前，沼气建设迎来了难得的发展机遇期，如何妥善处理发展速度和质量效益的关系，确保沼气事业持续健康发展是我们必须认真思考对待的问题。本文通过沼气“三起两落”的发展历程分析，针对沼气发展的制约因素，根据工作实践，结合沼气兼备公益性和经营性的特点，对推进沼气服务体系建设进行了探析。  相似文献