小麦     

蔺青  田纪春 《种子世界》2002,(9):44-44

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设施杏扣棚升温后枝条内源激素的变化     

秦栋  王金政  张安宁  翟衡 《中国农学通报》2007,23(3):308-312

以6￣7年生的设施杏(金太阳和凯特)为试材,研究了从扣棚升温至开花前枝条内源激素含量的变化。结果表明:ABA和ZR呈“升-降-升”的趋势;GA3变化较为复杂,IAA前期含量低且变化缓慢,后期含量急剧升高;四种内源激素中,ABA含量最高,IAA最少;ZR/ABA在升温后16d开始升高,而(IAA GA3 ZR)/ABA的升高,金太阳比凯特提前5d。  相似文献   

优质红香椿1号的快繁及应用技术     

周玉玲  刘广卿  张福娟  姜曙光  孙凤岭 《中国种业》2007,(10):64-64

河南省商丘市农林科学研究所研究的红香椿1号是香椿中的极品,该品种生长迅速、品质优良、营养价值高,已获得国家重点基础研究发展项目。红香椿1号是菜、树兼用型植物,它鲜嫩的芽菜蛋白质含量为9.7%,比一般香椿(5.7%)增加40%,维生素C含量增加  相似文献   

Strength and Microstructure of Sulphoaluminate Cement Containing Ultra- Fine CaCO3     

ZHOU Shi - hu  HUANG Jia - mu 《保鲜与加工》2006,(4):121-124

The existence of ettringite in sulphoaluminate cement hardened paste is mainly in the form of pole-like crystal,which causes unfavorable effect on the cement.In this paper the strength and microstructure of the sulphoaluminate cement containing ultra-fine CaCO_3 weze discussed.Experimet results show that the strength of sulphoaluminate cement was obviously improved by adding 3% of ultra-fine CaCO_3.After curing for 28d,the compressive strength of cement paste and mortar is 100.6MPa and 94.1MPa respectively,and the bending strength of the mortar reached 12.5MPa.SEM study on hardened paste of sulphoaluminate cement containing ultra-fine CaCO_3 showed that its structure was dense and homogeneous,there was hardly any massive crystall detected.  相似文献   

3D-MOTIF Method and Its Application to Microscale Topography     

LI Zhi-qiang  CHEN Xiao-an  YANG Xue-heng  HAN Xian-wu 《保鲜与加工》2006,(11):10-14

The 2D motif method is a surface characterization method promising to separate roughness and waviness from a profile and is adopted by ISO,so is meaningful to extend this method to 3D.Vincent's watershed algorithm is employed for the generation of 3D-motif.A smallest area selecting criteria is proposed for the use of clearing the small motifs which are concerned as noise.As there are no manipulating factors as 2D-method,a multi-scale analysis is employed based on area and depth criteria,the use of depth criteria is to prevent the combination of two adjacent motifs if there is a significant peak on the border of them.Finally the surface of C(100) are analyzed by the presented method,the texture of this surface has been characterized.  相似文献   

杂交粳稻3优18制种技术   总被引：1，自引：0，他引：1  

李素敏  尤来国  孙林静  马忠友  苏京平  刘学军 《中国种业》2003,(8):26-27

3优18是天津市第一个三系法杂粳组合,于2001年8月通过国家审定,现已在鲁南、苏北、皖北、豫北、豫南等省市大面积应用。1质量指标纯度≥99%,净度≥98%,发芽率≥80%,水分≤13%。2产量指标及产量构成每667m2母本占地约467m2,密度20cm×13cm,母本应插至少1.7万穴;每穴母本有10个有效穗;每穗结实率在50%左右,平均有60粒实粒;千粒重26.5g。每667m2产量可达到250kg以上。3具体操作规程3.1育秧秧田选择选择向阳、排灌方便、土壤肥沃的田块制成湿润秧田。父母本中间需隔开1m以上,最好隔开上水沟或下水沟,在两块田中分别育秧,严防两品种间混杂。底肥…  相似文献   

茄子新品种98-3     

杜秀兰  宋红梅 《中国种业》2003,(12):34-34

98-3是由太原市农科所育成的茄子一代杂种,其父母本均为华北地区圆果型的紫黑圆茄。1998年对两亲本进行了配组杂交,1999-2001年进行品比试验和多点试验,表现出生长势强,果形高圆、果皮黑紫色、果面光滑商品性好,抗枯萎病,抗寒性好等特性,深受试种农户欢迎,2002年太原市科委列入科学技术发展计划项目。目前已在太原地区多点示范种植。1特征特性属中早熟品种,株高96.1cm,开展度102.3cm左右,叶大、叶色深绿带紫晕。第8～9节上方着生门茄,果实高圆形,长约11.5cm,横径14.0cm,平均单果重612.9g,果皮紫黑有光泽,果肉绿白色,肉质紧密,口感好。品质优…  相似文献   

Pinning Theory of Fermi Energy and Surface State Measurement of ZnSnO3 Gas Sensitive Material     

LI Ji  LIU Tian-mo  ZHAO Xian-rui  WANG Zhong-chang  LI Jia-ming 《保鲜与加工》2006,(5):55-58

In order to research the state of energy bands and gain and loss of electrons on the surface of ZnSnO_(3),it is put forward that Pinning theory of Fermi energy is applied to development of gas sensitive materials.The relative position between surface state and conduction band on surface of zinc tin complex oxide(ZnSnO_(3)) gas sensitive material has been investigated by utilizing oxidation redox couple,FeCl_(2)/ FeCl_(3),which have high surface state.Fermi energy is pinned at about 0.2 eV below conduction band E_(cs)on the surface of ZnSnO_(3).It has been determined that additives doping ratio,addition concentration and working atmosphere have no effect on this value.Therefore,pinning theory of Fermi energy has been verified by using this method.  相似文献   

MPEG Layer Ⅲ Decoder Design Based on DSP     

LUO Jun  FU Li 《保鲜与加工》2005,(1):28-31

The design of MP3 decode system based on DSP is introduced. TLV320AIC23, a high performance and stereo codec chip, is selected as a D/A converter in the system. Two McBSPs ofDSP are connected to TLV320AIC23, one of them acts as configuration interface, the other ,the audio digital interface. Configuration interfacemode is SPI. The MP3 audio bitstreamtransmissionbetween the PC and DSP isrealized through the USB1.1 interface. So it is convenientto access MP3 audio bitstream. A large capacitymemory device, Compact Flash Card , is a storage media accessing MP3 bitstream.a programmable logical device, CPLD, controls reading, writing and chip selection of USB and Compact Flash Card. Some experiments show the systemcan well accomplish MP3 decodingand playing.  相似文献   

Optimization of Worm Gearing''s Geometric Parameters Under the Condition of the Errors and the Load     

XU Wu-jiao  QIN Da-tong  SHI Wan-kai ongqing  Chin 《保鲜与加工》2004,(4):24

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