氮磷钾运筹模式对玉米部分生理特性、产量及品质性状的影响     

胡曼  张子学  王长进  余海兵 《安徽科技学院学报》2015,(1):14-18

以玉米为材料,研究氮磷钾不同运筹模式对其生理特性、品质及产量性状的影响。结果表明,氮磷钾不同运筹方式对玉米穗位叶叶绿素含量、硝酸还原酶活性、穗长、穗粗、品质以及产量都有影响,且在不同施肥水平下,不同氮钾基追肥比例对性状的影响不同。在施肥水平高的条件下,氮钾基追肥比例以7/3产量最高;在施肥水平中等的条件下,氮钾基追肥比例以6/4玉米产量最高;在施肥水平低的条件下,氮钾基追肥比例以5/5玉米产量最高。  相似文献   

Extraction and stripping kinetics of copper （Ⅱ） by N902 using single drop technique     

朱萍  范泽云  吴金华  钱光人  周鸣 《上海大学学报(英文版)》2010,14(4):275-280

The kinetics of extraction and stripping of copper （Ⅱ） was investigated by the single drop technique with a new extractant N902 （a derivative of the salicylal-doxime） and the rate equations of extraction and stripping were derived, respectively. The apparent activation energies of extraction and stripping were estimated to be 20.14 kJ/mol and 30.0 k J/mol.  相似文献   

“N的V”短语的语义结构     

陈庆汉 《信阳师范学院学报(哲学社会科学版)》2010,30(1):106-110

“N的V”短语是比较特殊的一种定心短语,其语义结构具有双重性,分显层和隐层两个层面。“N的V”短语的显层语义结构是名核结构,这是考虑到“N的V”的定心句法结构形式对语义结构的制约作用和中心语V已经名物化这两个原因而确定的,可分为领属关系和限制关系两类。“N的V”短语的隐层语义结构是动核结构,这是考虑到N与V之间的确还保留有施事、受事与动核的语义联系以及“N的V”短语是由上文中的主谓句转化来的这两个原因而确定的,可分为施动关系、准施动关系、受动关系、成动关系、使动关系、系动关系、状动关系等7类。  相似文献   

“N＋I”模式提高高职数控专业学生实践技能的研究     

黄杰  邓利民  赵颖 《科教文汇》2012,(28):180-181

针对当前高职数控专业学生的实践技能水平现状及存在的问题进行了深入分析．结合南京工业职业技术学院数控专业学生“校企合作、生产性实训”制度。提出了基于企业需求的“N＋I”学生实践技能培养模式．该模式以学生为主导．以企业产品为载体．使学生的实践与企业生产无缝化对接．效果显著。  相似文献   

保护气预热装置的改进设计     

徐晓伟  曹玉超  张鑫 《黑龙江科技信息》2012,(29):75

在汽车工业减重、节能的大趋势下,对汽车板材处理的要求也相应提高。镀锌退火炉中板温均匀性是影响汽车板镀锌层的一大因素,为了进一步控制板温均匀性,减少退火时炉温的波动,设计并改进保护气预热装置,以达到提高汽车板镀锌质量的目的。  相似文献   

从“山寨机”看非典型名名组合的意义建构     

卢美艳 《四川教育学院学报》2010,26(5):86-88

非典型名名组合一方面反映了语言形式和表达的相似性,同时也揭示了意义构建的复杂性。因为该组合的意义并非来自其各组成部分意义的简单相加,而是经过整合后形成的新创意义。换句话说,非典型名名组合的意义是由这两个名词所构成的输入心理空间在环境信息和背景知识的共同影响下形成一个具有新创结构的整合空间,然后经过组合、完善和细化产生了新的意义。  相似文献   

PIC单片机扩展大容量数据存储器KM29N16000TS     

洪应 《安徽职业技术学院学报》2004,3(1):13-16

PIC1 6F877可采用 MSSP模块的 SPI方式扩展大容量数据存储器 ,74HC1 65和 74HC5 95分别实现串 -并和并 -串转换以模拟片外数据总线 ,而 RB口用于产生控制读写的信号线 ,KM2 9N1 60 0 0 TS的 8位信号传送方式为数据线与地址线的连接提供了更简单的实现方式  相似文献   

The effects of attitudinal versus religious similarity on the neighborhood preferences of Lebanese university students     

Lutfy N. Diab 《Int J Intercult Relat》1979,3(2):153-162

The main purpose of the present study was to assess the relative importance of attitudinal versus religious similarity on the neighborhood preferences of Lebanese university students shortly after the 1975–1976 war in Lebanon.It was expected that neighborhood preference for a stranger would be affected by: (1) attitudinal similarity — dissimilarity on an important political issue and by (2) the number of strangers involved.The subjects were 169 Lebanese undergraduate students at the American University of Beirut (67 Christians, 96 Muslims, with six subjects not mentioning religious affiliation). In terms of political ideology, 38 subjects were conservative while 131 were liberal and, with respect to displacement during the war, 81 subjects stated that they were displaced while 88 subjects indicated that they remained in their original neighborhoods. Finally, with respect to ethnic (or national) origin, 118 subjects considered themselves as “Arabs” while 48 indicated that their origin was something “other” than Arab, with the remaining three subjects not responding to this item.The results showed that, irrespective of the background characteristics of the subjects, (1) strangers of a different religion who had the same attitudes on an important political issue were significantly more preferred as neighbors than coreligionist strangers who had opposite attitudes on the same issue, and (2) neighborhood preference was significantly greater for one than for many strangers. However, although one stranger was significantly more preferred as a neighbor than many, this preference was found to be stronger under the opposite attitude — same religion condition.  相似文献   

N-亚水杨基-L-异亮氨酸钾的电子轰击质谱     

王仲军 《唐山学院学报》2000,(4)

对新合成的氨基酸希夫碱化合物 N 亚水杨基 L 异亮氨酸钾电子轰击产生的主要碎片离子可能形成的过程和归属进行了讨论 .实验发现 ,N亚水杨基 L异亮氨酸钾在该实验条件下发生了热分解反应  相似文献   

CHANGES IN SOIL BIOLOGICAL PROPERTIES WITH THE ADDITION OF METSULFURON-METHYL HERBICIDE   总被引：1，自引：0，他引：1  

黄昌勇  A.M.ELghamry  徐建明  谢正苗 《Journal of Zhejiang University. Science. B》2000,(4)

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｍａｉｎｔｅｎａｎｃｅｏｆｓｏｉｌｆｅｒｔｉｌｉｔｙｄｅｐｅｎｄｓｏｎｔｈｅｓｉｚｅａｎｄａｃｔｉｖｉｔｙｏｆｓｏｉｌｍｉｃｒｏｂｉａｌｂｉｏｍａｓｓ(Ａｌｅｘａｎｄｅｒ,1 977) ,ｗｈｉｃｈｉｓｏｆｆｕｎｄａｍｅｎｔａｌｉｍｐｏｒｔａｎｃｅｉｎｔｈｅｂｉｏｌｏｇｉｃａｌｃｙｃｌｅｓｏｆａｌｍｏｓｔａｌｌｍａｊｏｒｐｌａｎｔｎｕｔｒｉｅｎｔｓ (ＲｏｂｅｒｔａｎｄＣｈｅｎｕ ,1 992 ) .Ａｌｔｈｏｕｇｈｔｈｅｓｏｉｌｍｉｃｒｏｂｉａｌｂｉｏｍａｓｓｒｅｐ ｒｅｓｅｎｔｓｏｎｌ…  相似文献