鸽新城疫的流行与防控     

叶有超  胡俊峰  韩青松  高小龙  刘素贞  段龙川  简永利  涂宜强  董丽艳 《畜牧与饲料科学》2020,41(5):107-111

鸽新城疫是由新城疫病毒感染鸽群引起的传染病, 在世界各国鸽场均有流行。介绍了鸽新城疫流行情况及特点, 流行毒株的基因型、病毒的毒力、病毒的抗原特性, 提出在做好鸽场内生物安全控制和精细化管理基础上, 使用市售新城疫疫苗进行合理免疫是鸽新城疫防控的关键。  相似文献   

中辽1号杨在辽宁地区引种研究     

蔄胜军  刘巍  王胜东  杨志岩  纪纯阳  韩兆伟 《辽宁林业科技》2014,(1):6-9,51

对20世纪末新引进到辽宁并经初选的12个杨树无性系进行了引种试验研究,通过无性系多点生长对比试验、室内外物候观测、对杨干象抗性评价和材性测试等,筛选出生长快、适应强的杨树新品种中辽1号杨,其材积生长量分别超过当地对照种辽宁杨、沙兰杨、荷兰3930杨和I-214杨14.8%~68.1%。其生长进程中高生长最快期是在5~6年生,连年生长量最大数值达到3.6 m;胸径生长最快期是在3~5年生,连年生长量最大数值达到6.34 cm。而且干型好、材质优良,对杨干象有相对较强的抗性,可作为新品种在其适生区大面积推广。  相似文献   

黔育1号菊苣与紫花苜蓿、鸭茅间作栽培效果研究     

覃涛英  付薇  苏生  陈伟  韩永芬  李德芳  马宁  马培杰 《畜牧与饲料科学》2019,40(7):55-59

依据贵州省松桃县的气候特点和牧草种植需要,用黔育1号菊苣与北林202紫花苜蓿、黔草4号鸭茅分别进行间作试验,从产量、营养品质、生产效益等方面对间作复合群体与3种牧草单播进行比较分析,探讨黔育1号菊苣与不同牧草间作种植模式的增产效益。结果表明,在贵州松桃地区,黔育1号菊苣+北林202紫花苜蓿间作,年均鲜草产量可达87.27 t/hm²,比紫花苜蓿单播产量增加36.17%,生产效益提高20.77%,粗蛋白含量达26.83%。该研究结果可为松桃县种草养畜产业的发展提供技术支撑。  相似文献   

我国蔬菜肥料利用率现状与提高对策   总被引：4，自引：0，他引：4  

黄梓翀  刘善江  孙昊  侯立柱  吴荣  薛文涛 《蔬菜》2021,(7):43-50

我国露地蔬菜种植和设施蔬菜种植养分用量均超过蔬菜生长所需,导致土壤次生盐渍化、肥料利用率低,增加了面源污染风险,在分析这些现状的基础上,对造成蔬菜种植中氮、磷、钾肥料利用率低下的原因进行了分析,如有机肥与化肥施用配比随意性强,搭配不合理;氮、磷、钾肥配施比例不合理;大量元素与中微量元素配合施用不合理;肥料总施用量过大;土壤自身的原因等。并提出了提高肥料利用率的测土与科学配方施肥、有机肥与无机肥合理配合施用、采用水肥一体化技术和土壤调理剂等措施,有望提高我国蔬菜肥料利用率,节约资源,防止面源污染,实现蔬菜生产的可持续绿色发展。  相似文献   

紫薇栽培管理技术   总被引：1，自引：0，他引：1  

孙荣  李亮亮  朱晓敏  董源 《绿色科技》2014,(9):83-85

指出了紫薇作为城乡绿化的重要树种，适宜于庭院、园路两侧、池畔河边栽植。结合栽培管理实践，系统地总结了紫薇树的育苗、修剪和病虫害防治技术。  相似文献   

紫阳群体种朱雀寺古茶树红茶生化成分检测与品质分析     

罗婷婷  张琳  韩皓宇  陈芳 《湖北农业科学》2020,59(17):145-149

  相似文献   

不同培养基成分对薄荷试管苗生根的影响     

兰伟  韩晴 《安徽农业科学》2015,(14)

[目的]筛选薄荷试管苗生根的最佳培养基组合。[方法]以薄荷试管苗茎段为试验材料,探讨不同培养基成分、凝固剂种类及添加量对其生根的影响。[结果]在薄荷试管苗培养过程中,使用琼脂为凝固剂,且添加量为7 g/L的1/2MS培养基时,其生根时间最短,生根数和生根长度较高。[结论]为薄荷试管苗的大规模、优质、高效生产提供理论依据。  相似文献   

油松专用肥对苗木生理特性及抗性的影响   总被引：1，自引：0，他引：1  

李彩珍  张兰芳  韩有志  王曰鑫 《山西农业科学》2015,(1):47-49

油松是华北地区重要的造林树种,合理施肥可有效提高油松体内的养分和抗性。在4种不同施肥处理下,对3年生油松幼苗的叶绿素、根系活力、电导率的动态变化进行了测定,以探讨施肥对苗木生理特性及抗性的影响。结果表明,施肥对油松各种生理特性有明显影响;除树液流动期外,不同施肥处理能显著提高叶绿素含量,且效应由大到小排序为多元肥NPK肥N肥;施肥能显著提高根系活力,施用多元肥对根系活力呈现极显著差异的正效应;不同施肥处理对油松电导率的影响程度没有明显的规律。  相似文献   

Analysis of the independent-and interactive-photo-thermal effects on soybean flowering     

WU Ting-ting  LI Jin-yu  WU Cun-xiang  SUN Shi  MAO Ting-ting  JIANG Bing-jun  HOU Wen-sheng  HAN Tian-fu 《中国农业科学(英文版)》2015,(4):622-632

Soybean(Glycine max(L.) Merr.) is a typical short-day and warm season plant, and the interval between emergence and flowering has long been known to be regulated by environmental factors, primarily photoperiod and temperature. While the effects of photoperiod and temperature on soybean flowering have been extensively studied, a dissection of the component photo-thermal effects has not been documented for Chinese germplasm. Our objective of the current study was to evaluate the independent- and interactive-photo-thermal responses of 71 cultivars from 6 ecotypes spanning the soybean production regions in China. These cultivars were subjected in pot experiments to different temperature regimes by planting in spring(low temperature(LT)) and summer(high temperature(HT)), and integrating with short day(SD, 12 h), natural day(ND, variable day-length), and long day(LD, 16 h) treatments over two years. The duration of the vegetative phase from emergence to first bloom(R1) was recorded, and the photo-thermal response was calculated. The outcome of this characterization led to the following conclusions:(1) There were significant differences in photo-thermal response among the different ecotypes. High-latitude ecotypes were less sensitive to the independent- and interactive-photo-thermal effects than low-latitude ecotypes; and(2) there was an interaction between photoperiod and temperature, with the effect of photoperiod on thermal sensitivity being greater under the LD than the SD condition, and with the effect of temperature on photoperiodic sensitivity being greater under the LT than the HT condition. The strengths and limitations of this study are discussed in terms of implications for current knowledge and future research directions. The study provides better understanding of photo-thermal effects on flowering in soybean genotypes from different ecotypes throughout China and of the implications for their adaptation more broadly.  相似文献   

Establishment and Optimization of INH Epitope Peptide Vaccine for Detection of Antibody     

ZHANG Ling-ling  YUE Yao-jing  FENG Rui-lin  LI Hong-feng  GUO Ting-ting  YUAN Chao  NIU Chun-e  LIU Jian-bin  SUN Xiao-ping  HAN Ji-long  LIU Shan-bo  YANG Bo-hui 《中国畜牧兽医》2016,43(8):2156-2163

In this study, an indirect ELISA method was established to detect inhibin hormone (INH) epitope peptide vaccine antibody, it would provide oretical reference for the determination of Fine-wool sheep after active immune body INH epitope peptide vaccine antibody. On the basis of the predecessors, using indirect ELISA method to determinate serum INH epitope peptide antibody levels of sheep, and through control different experimental conditions to look for the best experimental conditions. Through explorating the experimental conditions, finally, the testing experiment conditions were determined, which was blocked solution with skimmed milk powder, INH and GnIH synthetic peptides dilution degrees for 20 000 times, the optimum reaction time was 60 min, the best color action time was 15 min. In this experiment, a kind of method to detection antibody in the body after INH active immune sheep was built, it would provide a reference for future research.  相似文献