精制马尾松花粉的营养和加工储藏技术   总被引：8，自引：0，他引：8  

顾培英 《经济林研究》1998,16(1):15-18

本文对马尾松花粉合理适时采摘，及时在常温35℃以下进行干燥，使含水量迅速下降为10％以下，经紫外线处理1～2小时达到灭菌控菌。经过加工处理的马尾松花粉，使之能储藏1～3年质量不变，与冰箱0～5℃储藏质量一样好。松花粉营养丰富，蛋白质含量较高，Fe、P、Mn、Ca、Zn含量多，Mg更为丰富，多种的营养成分，对人体健康有利，能促使体内元素平衡．马尾松花粉又是民间食疗珍品和传统中药材，因此，对加快开发马尾松花粉是有重大意义的。  相似文献   

古籍图书的收藏与保护   总被引：4，自引：2，他引：2  

卜林 《农业图书情报学刊》2008,20(3):114-117

以当前古籍保护工作,日益得到社会重视为契机,以国家图书馆古籍馆为例,结合有关普通古籍收藏与保护的一些问题,为古籍保护工作提出几点建议.  相似文献   

Sesbania seed collections in Southern Africa     

J. N. Ndungu  D. J. Boland 《Agroforestry Systems》1994,27(2):129-143

The International Centre for Research in Agroforestry (ICRAF) is a member of the Consultative Group on International Agricultural Research (CGIAR) system and has recently established a Multipurpose Tree Germplasm Resource Unit (MPT-GRU) in Nairobi, Kenya. The first major activity of the MPT-GRU was to undertake a regional germplasm collection ofSesbania in 5 countries in southern Africa in a collaborative mode with National Agricultural Research Services (NARS). The collections took place in Botswana, Malawi, Namibia, Zambia and Zimbabwe.Key elements of a generalised collaborative mode (the model) are indicated follwed by a summary of actual events. The initial phase involved joint planning and training sessions between NARS, three sister CGIAR centres and one regional institution, the Southern Africa Development Conference (SADC) Regional Gene Bank (SRGB). This was followed by actual collections during 1993 led by National scientists with different levels of CGIAR participation in each of the five countries. The International Board of Plant Genetic Resources (IBPGR) took the lead in pre-collection training activities, ICRAF for developing the collection programme and the International Livestock Centre for Africa (ILCA) for seed drying, testing and despatch for field trials. NARS gene banks guided the necessary administrative processes. The ICRAF lead scientist for the species and provenance evaluation phase was a crucial member of the planning process thus allowing integration of the collection with the eventual field evaluation. The article focuses on the collection strategy, administrative protocols for actual collections and summary results. Some advantages and difficulties associated with the collection programme and model are discussed. The collections were important in bringing together agriculturalists and foresters in a common germplasm collection exercise.  相似文献   

香椿种子的发芽率与采种方法及贮藏技术的相关性研究   总被引：2，自引：1，他引：2  

史兆庆 《山西林业科技》2001,(4):19-21

传统的采种方法与贮藏技术，导致香椿种子发芽率低、不耐贮藏、极大地影响了香椿的生产和经营。作者通过近年的试验研究，总结出一套香椿种子正确的采种与贮藏技术，可确保香椿种子的以较高的发芽率，常年供应市场需求。  相似文献   

厦门地区常见绿化树种的种苗培育技术初探     

陈来德 《福建林业科技》2002,29(1):36-40

通过多年的园林苗圃试验与生产实践 ,对一些厦门地区常见的绿化树种的采种期、种子处理、种子贮藏、育苗方法及苗木抚育等种苗培育技术进行了较为全面的探讨  相似文献   

应用Visual Basic 6.0开发木材标本管理系统   总被引：1，自引：0，他引：1  

徐斌  许成林 《木材工业》2005,19(3):37-38,43

应用Visual basic 6.0语言开发了安徽农业大学木材标本馆标本管理系统,系统设有检索、输入、统计、打印、维护等功能模块.本系统适当调整后也适用于林业系统的树木学、植物、动物、昆虫等标本的管理.  相似文献   

白藤花粉采集时间及萌发条件的初步研究   总被引：2，自引：0，他引：2  

陈和明  尹光天  胡哲森  李荣生  马钟丽 《江苏林业科技》2004,31(6):1-4

对白藤开花习性、花粉采集时间及萌发条件进行了初步研究,结果表明：在白藤开花盛期,日开花高峰期集中在早晨4：00～8：00,其中6：00开放的花朵占当日开花总数的62．36％,其他时段开花量极少;上午8：30～11：30收集的花粉萌发力最强;在25％蔗糖液体培养基中和35℃下培养6h,花粉萌发与生长效果最佳。  相似文献   

Effect of collection date on capsule moisture content and germination of Populus ciliata Wall. ex Royle from central Himalaya     

Pandit  Atul  Pant  Kavita  Ram  Jeet 《New Forests》2002,23(2):121-130

Seed maturity indices of Populus ciliata were investigated in collections from Sukhatal and Bhowali. Across both seed sources, mean capsule size varied from 68.0±1.5 mm² to 72.0±0.9 mm², while mean number of capsules/100 grams varied from 268±8 to 295±12. Mean weight of 100 capsules varied from 25.0±1.4 g to 27.0±1.4 g. Weight of 100 capsules among sources and individual trees differed significantly (P < 0.05), while number of capsules/100 grams and weight of 100 capsules was negatively correlated (r² = 0.69). As capsules matured moisture content decreased from 83.2±1.1% to 54.3±0.3% at Sukhatal and from 77.7±0.4% to 46.4±0.3% at Bhowali. The optimum germination was at 58–60% moisture content. Maturation was related to capsule colour changes as well as moisture content. These parameters were judged to be good indicators of when to collect P. ciliata seeds.  相似文献   

Viability retention of seeds of shisham (Dalbergia sissoo Roxb.) on the trees after maturity     

K. S. Bangarwa  V. P. Singh  Sunil Puri 《New Forests》1996,11(1):85-91

In 1991 and 1992 studies on Dalbergia sissoo Roxb. showed the availability of ample amount of viable seed from November to May. Viability of seeds collected from December to March was more than 90 per cent. There was a slight but significant decrease in germination from March to may. Again germination per cent was slightly and significantly decreased from May to July. Thereafter, seed availability and viability were got drastically reduced. Sufficient viable seed of Dalbergia sissoo Roxb. can be collected at any time from November to July.  相似文献   

马铃薯联合收获机环形减损集薯升运装置设计与试验     

李学强  王兴欢  刘洋  王法明  孟鹏祥  王金梅 《农业机械学报》2023,54(12):109-120

针对现有马铃薯联合收获机升运输送行程长而导致伤薯率高、破皮率高、机具结构不紧凑等问题,结合北方马铃薯主产区收获模式,设计了一款适用于马铃薯升运作业的环形减损集薯升运装置。在阐述总体结构及工作原理基础上,结合马铃薯运动学模型和碰撞特性分析,得到影响升运效率和薯块损伤的主要因素,通过DEM-MBD耦合构建薯块和装置模型,得到最优参数组合：升运挡板高度为199.21 mm、升运挡板与升运输送带间夹角为75.86°、相邻两升运挡板间距为240.35 mm。台架试验表明：上料量为24 t/h,升运输送带运行速度为0.8、1.0、1.2 m/s时,电子马铃薯采集的碰撞加速度峰值平均值为636.63、593.29、685.63 m/s²,破皮率为1.13%、1.06%、1.21%,碰撞加速度峰值均小于马铃薯临界损伤阈值。田间试验表明：作业速度为0.6、0.7、0.8 m/s时,伤薯率为0.94%、1.06%、1.12%,破皮率为1.09%、1.21%、1.33%,环形减损集薯升运装置运行正常,未出现薯块掉落等现象,各部件配合协调,满足装袋型马铃薯联合收获机高效稳定的作业要求。  相似文献