南京地区西瓜秋延迟栽培技术研究     

韩勇  魏猷刚  欧阳义勇  徐颂涛  章鸥  甘小虎  杨会玲  陆雪军  吴志鹏 《金陵科技学院学报》2014,(2):62-65

为延长西瓜供应时间,实现反季节上市,提高大棚利用率,研究了南京地区西瓜秋延迟栽培技术。结果表明:‘早佳8424’和‘小兰’为最适宜南京地区秋延迟栽培的中型和小型西瓜品种;采用地爬式栽培,西瓜单果重,商品性好,投资较小;采用吊蔓栽培,栽培密度大,西瓜亩产高;种苗8月上旬定植,生长期避开高温,利于高产增收。  相似文献   

低温发酵乳品质特性研究     

李静  任发政  李晓鹏  顾会咏  甘伯中 《中国奶牛》2011,(18):50-54

以青藏高原传统发酵牦牛乳中分离的保加利亚乳杆菌（编号为CGMCC2603）和酸乳球菌（编号为CGMCC1.3920）为研究对象，研究菌株低温发酵酸乳的感官特性、后酸化能力、粘度及双乙酰含量变化。结果表明试验菌株在25℃发酵的酸乳凝乳状态较好，冷藏14d后酸度分别提高29．2°T和8．5°T，后酸化较弱。冷藏期间粘度变化与发酵温度没有直接关系。低温有利于双乙酰的积累，双乙酰含量最高分别为12．04ug／mL和9．78ug／mL。本研究时开发低温发酵剂具有重要意义。  相似文献   

Differential Expression Analysis of MUC4 and MUC13 Genes Between Resistant and Sensitive Weaned Meishan Piglets to ETEC F18     

QIN Wei-yun  GAN Li-na  WEI Zong-you  YE Lan  BAO Wen-bin  WU Sheng-long 《中国畜牧兽医》2017,44(4):959-964

MUC4 and MUC13 genes as important candidate genes for enterotoxigenic Escherichia coil (ETEC) F4 resistance,may play an important role in the process of against ETEC F18 infection in weaned piglets. In this study,ETEC F18-resistant and -sensitive weaned Meishan piglets were used,and the expression levels of MUC4 and MUC13 genes in 11 tissues (heart,liver,spleen,lung,kidney,stomach,muscle,thymus,lymph nodes,duodenum and jejunum) were determined by quantitative Real-time PCR. The results showed that MUC4 and MUC13 genes were broadly expressed with different expression levels in all the 11 tissues. In the thymus and lymph tissues,the expression of MUC4 gene in resistant piglets was significantly higher than that in sensitive piglets (P<0.05);In the lung tissue,theMUC13 gene expression level in resistant individuals was significantly higher than that in sensitive individuals (P<0.05),and in the intestinal tissues of duodenum and jejunum, the expression level of MUC13 gene was relatively higher in resistant individuals. Thus we speculated that the high expression of MUC4 gene in immune tissues and MUC13 gene in intestinal tissues might improve the immune ability of piglets,protect and lubricate the intestinal tract, and resist ETEC F18 infection.  相似文献   

Amplification,Sequence Analysis and Tissue Expression Detection of FUT2 Gene Coding Regions of Dongchuan Pigs     

QIN Wei-yun  GAN Li-na  ZHAO Cheng-xiang  YU Li-huai  BAO Wen-bin  WU Sheng-long 《中国畜牧兽医》2017,44(1):1-11

Porcine alpha (1,2) fucosyltransferase (FUT2) gene was importance in glycosphingolipid biosynthesis-globo series, potentially played a regulatory role during Escherichia coli (E. coli) F18 infection process in weaned piglets. In order to explore sequence structure of porcine FUT2 gene and its biological function, this test amplified FUT2 gene CDS sequence of Dongchuan pigs by PCR, forecasted and analyzed the protein sequences and functional regions of FUT2 gene, its expression level was detected in 11 tissues of 8 Dongchuan weaned piglets in 35 days old at the meantime. The results showed that the CDS sequence of FUT2 gene was 1 023 bp, which encoded 340 amino acids. FUT2 protein was fat-soluble hydrophilic protein, which the structure was not stable, including a transmembrane helix structure, but without signal peptide that suggested the FUT2 protein was a membrane protein;FUT2 protein included 2 N-glycosylation sites (No. 185 and No. 305 amino acids), without O-glycosylation sites, there were 14 potential phosphorylation sites, included 6 Ser, 2 Thr and 6 Tyr, analyzing the functional regions found that the FUT2 protein had a superfamily of conserved domains:FUT1-FUT2-like (58-319 amino acids). The phylogenetic tree result showed that the relative relationship between swine and cattle was relatively close, but was distant from chimpanzee, human, mouse and rat. FUT2 gene was expressed in all 11 tissues of Dongchuan weaned piglets, there were higher expression in digestive tract and immune tissues. The present results suggested that FUT2 gene might play a role to resistance to E. coli F18 in weaned piglets, and might indirectly against E. coli F18 through the synthesis of fucosyltransferase.  相似文献   

1FFSL-5型浅翻深松翻转犁的设计与试验     

甘露  孙大明  程亨曼 《农机化研究》2008,(5):136-138

保护性耕作技术及配套机具已成为当今世界农业发展的主题，深松技术作为保护性耕作的一项关键技术在我国已得到广泛应用。为此，进行了浅翻深松翻转犁的总体设计，确定了工作原理和主要参数，并通过试验进行了验证。结果表明：该样机达到了设计指标，具有一定的应用价值。  相似文献   

The Study of Management of Using Agricultural Land Resource in China     

WANG Bing-chun 《农机化研究》2008,(9)

  相似文献   

锰肥对孜然芹产量的影响   总被引：2，自引：2，他引：0  

高杰  刘立强  高翔  甘付华 《新疆农业大学学报》2003,26(4):74-75

通过对孜然芹种子使用0．05％．0．10％，0．50％，1．00％4个浓度的MnSO4进行浸种处理，结果表明，用0．05％和0．10％的MnSO4溶液浸种增产效果显著，增产幅度分别为46％和28％，而0．5％和1．0％的处理均无增产效果。  相似文献   

国内外汽车市场需求分析     

杨沿平  甘年妃  刘克进 《湖南农业大学学报(自然科学版)》2003,(5)

根据大量调查统计数据和汽车市场变化规律 ,分析目前国内外 (尤其是国内 )汽车市场情况和发展趋势 ,并对 2 0 10年国内汽车市场主要产品和技术需求进行了预测。  相似文献   

构建基于ArcGIS的林业工程信息系统   总被引：1，自引：0，他引：1  

甘澍 《江西林业科技》2008,(2):62-64

从提高林业工程数据管理的效率、效果和效益出发,探讨构建基于ArcGIS的县级林业工程信息系统的方法和步骤,以期为建立多层级互联共享的林业工程信息系统储备基础数据和相关技术。  相似文献   

长叶榧叶部油挥发性成分的色谱/质谱分析研究   总被引：1，自引：0，他引：1  

吴渝  杨湄  李培武  寿建尧  胡乐华  张文  陈洪  甘冬生 《中国油料作物学报》2004,26(3):97-99

采用气相色谱/质谱(GC-MS)联用法测定了长叶榧叶部精油的挥发性成分,初步发现其主要成分是柠檬烯、反式α-蒎烯、β-蒎烯、顺式α-蒎烯、3-莰烯、6,6-二甲基-2-亚甲基-环庚烷、β-月桂烯,其含量分别为32.2%、12.5%、7.1%、6.6%、6.6%、5.5%、4.4%.  相似文献