食用菌液体培养推广的市场研究

食用菌液体培养技术是食用菌的工业化、集约化生产的基础,食用菌液体培养生产食用菌菌种方面极具优势。在食品、生物医药等行业中也有很广泛的应用和发展前景。     

4个外引甘蓝型冬油菜品种比较试验初报

对从加拿大引进的4个甘蓝型冬油菜新品种在宁县进行品比试验的结果表明,甘蓝型品种BANJO折合平均产量最高,为3 523.23 kg/hm2,较主对照品种82-2-1、副对照品种宁油1号分别增产35.59%、4.44%.但抗寒、抗旱性差,较白菜型冬油菜晚熟10 d以上.     

《贵州农业科学》载文情况比较分析

为了解《贵州农业科学》2008-2010年载文情况,为该刊的科学发展提供参考,采用文献计量法对《贵州农业科学》2008-2010年载文情况进行统计分析,并用统计结果与前期的研究结果进行了比较分析.结果表明:该刊2008-2010年共出版30期,刊载论文2185篇,平均年刊载量为728篇,平均每期载文73篇;高校稿件的刊...     

基于比较优势的区域主导产业选择——以天津市西青区农业为例

首先介绍了天津市西青区农业产业发展概况：农业集约化水平较高;新型农业发展如火如茶;农副产品销售收入是农户家庭收入的主要来源。基于生产资源密集度原则、市场潜力原则和关联带动原则,采用综合比较优势指数法,建立了3个比较优势测定指标——比较优势指数、规模优势指数和综合优势指数,再通过数据分析,确定该区域优势产业。结果表明,经济作物和水产养殖业的区位商较大,但水产养殖西青区无论在自然条件、产业传统与基础、产值等方面都不适合大力发展水产养殖,因此选定经济作物作为西青区主导产业。     

北盘江流域增殖放流鱼类的标志方法研究

用荧光标记法和T-tag锚标法标记了体长11.88-13.13cm的长臀鮠Cranoglanis bouderius、光倒刺鲃Spinibarbus hollandi、白甲鱼Onychostoma simus、花 Hemibarbus maculatus（Bleeker）,以寻找适合北盘江增殖放流鱼类的标志方法。14d的标记结果表明：荧光标志法标记的长臀鮠、光倒刺鲃、白甲鱼、花的成活率均在90.0％以上,是一种较为经济实用的标志方法,可在该流域增殖放流使用。需在短时间内回捕的放流对象也可用T-tag锚标法作辅助标志。     

湘西州烟叶物理特性分析

为明确湘西州烟叶物理特性的区域特征,以C3F等级烟叶为材料,分析了湘西州烟区烤烟主要物理特性在不同品种、土壤类型、海拔和县域间的差异。结果表明:湘西州烤烟开片度小,单叶重偏高,叶片厚度薄,叶质重轻,平衡含水率高,含梗率适宜。含梗率和平衡含水率的变异系数较小。开片度、单叶重、平衡含水率在品种、土壤类型、海拔高度间差异不显著;含梗率、叶片厚度、叶质重在品种和海拔高度间差异不显著,但土壤类型间差异显著;开片度、含梗率、叶片厚度、叶质重县区间差异显著。     

Macromineral requirements of Dorper×thin-tailed Han crossbred female lambs

A comparative slaughter trial was conducted to determine the net mineral requirements for maintenance and growth of Dorper crossbred female lambs raised from 20 to 35 kg of body weight(BW).Thirty-five Dorper×thin-tailed Han crossbred female lambs of(20.3±1.14) kg BW were used: 7 lambs were randomly chosen and slaughtered at the beginning of the experiment as the baseline group for measuring the initial body composition; another 7 lambs were randomly chosen and offered a pelleted mixed diet ad libitum and slaughtered at(27.0±0.73) kg BW; the remaining 21 lambs were randomly divided into 3 groups of 7 animals each and subjected to the same diet either ad l ibitum or at 70 or 40% of ad libitum intake.The 21 lambs were fed in 7 slaughter groups, with each group consisting of one lamb from each treatment(ad libitum, 70 or 40% of ad libitum intake).The 3 groups were slaughtered when the sheep fed ad libitum attained(33.8±0.52) kg of BW.The body composition of five minerals(Ca, P, Na, K, and Mg) was determined.The net mineral requirements for maintenance were 35.01, 25.18, 9.30, 31.35, and 2.03 mg kg–1 empty BW(EBW) for Ca, P, Na, K, and Mg, respectively, and the net growth requirement per kg of EBW gain ranged from 9.73 to 8.87 g of Ca, 5.83 to 5.27 g of P, 1.73 to 1.63 g of Na, 3.73 to 4.08 g of K, and 0.26 to 0.25 g of Mg for Dorper crossbred lambs in China, respectively.The estimates of mineral requirements with Dorper crossbred lambs in the current study were not consistent with the recommendations from previous studies.     

土著竹种在柬埔寨暹粒省社区林业发展中的应用前景

柬埔寨拥有较丰富的竹类资源,且有较多的传统利用,但竹类资源在社区林业建设中没有得到足够重视。暹粒省面临着经济发展和森林资源匮乏突出矛盾,发展社区林业是缓解这一矛盾的重要途径。当地土著竹种在社区林业发展中具有多方面的优势,应成为发展社区林业的首选树种。     

Integration of AFLPs,SSRs and SNPs markers into a new genetic map of industrial chicory (Cichorium intybus L. var. sativum)

A chicory genetic map of 1208 cM has been created using 247 F₂ plants and 237 markers (170 AFLP, 28 SSR, 27 EST‐SNP and 12 EST‐SSR). This map covers 84% of the chicory genome. The chicory‐genic‐markers‐associated sequences were used to find potential orthologs in mapped lettuce ESTs from the Compositae Genome Project Database. Twenty‐seven putative orthologous pairs were retained, pinpointing seven putative blocks of synteny that covered 11% of the chicory genome and 13% of the lettuce genome, opening new perspectives for the analysis of these two species.