新疆天然草地生态保护与利用及牧民定居示范工程信息平台的建设     

龙伊  温希军  陈新文  王琼  李天斗  合斯莱提 《农业网络信息》2010,(1):74-76

阐述了"新疆天然草地生态保护与利用及牧民定居示范工程"项目信息平台系统的设计、特点及信息采集与维护等情况,通过该平台的建设,使中日双方项目组对项目的进展有了直接的了解,同时为项目的顺利实施奠定了基础,也为项目的进一步推广起到了示范作用。  相似文献   

昆虫生长调节剂和生物农药防治韭蛆田间药效试验   总被引：6，自引：0，他引：6       下载免费PDF全文

陈栋  张思聪  张龙 《植物保护》2005,31(1):82-84

对3种昆虫生长调节剂和2种生物农药对韭蛆田间防效进行了初步评价。春季试验结果表明,10%高渗烟碱水剂1000倍液防效最好,达70.0%以上;70%灭蝇胺可湿性粉剂3000倍液和0.3%印楝素乳油1000倍液次之;而5%卡死克乳油800倍液和5%抑太保乳油1000倍液的防效较差。将春季试验药效较好的3种农药用于秋季田间试验,结果表明,10%高渗烟碱水剂1000倍液和70%灭蝇胺可湿性粉剂3000倍液防效较好,特别是10%高渗烟碱水剂的防效达到79.8%,几乎与40%辛硫磷乳油1000倍液相当。0.3%印楝素乳油1000倍液的防效较差,仅为69.2%。  相似文献   

搞好森林病虫害监测预报,促进林业生态建设和可持续发展     

郝宗信  龙炜 《江西植保》2005,28(1):28-29,27

就森林病虫害监测预报工作在林业和生态建设中的意义和作用，针对我省测报网络建设的现状及存在的问题，提出了江西测报体系建设的思路。  相似文献   

38,XX/38,XY chromosome chimaerism in three feline siblings     

Long SE 《The Veterinary record》1999,145(14):404-405

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桔园柿广翅蜡蝉卵块空间分布图式     

Xia Chugui Zhong Shitian Long Shibing 《湖北农学院学报》1991,(1)

柿广翅蜡蝉在某些柑桔产区新上升为主要害虫。我们于1986年7月间在宜昌柑桔产区对其卵块分布图式进行了调查,通过10组资料分析,得如下结果:(1)由比较频次法测得卵块在桔园呈负二项或截尾负二项分布。(2)由聚集强度测定方法测得卵块在桔园呈聚集分布图式,其分布的基本成份是疏松的个体群,个体群的分布是聚集的,个体内的分布是随机的。(3)由 IwaoM~*指标法求得个体群大小为1～3株(10组资料平均为1.7株)桔树所占面积。(4)由 Blackich 的λ值测得,卵块密度大于6的9组资料其聚集是由于卵块自身聚集行为习性造成(由成虫产卵行为决定),或某些环境因子作用引起。而有一组密度为2.4的资料,其聚集可能完全由于某些环境条件的作用而引起。  相似文献   

Evaluation of use of progesterone to counteract zearalenone toxicosis during early pregnancy in gilts.     

M L Green  D K Stouffer  A B Scheidt  G G Long  M A Diekman 《American journal of veterinary research》1991,52(11):1871-1874

It has been shown that zearalenone disrupts early pregnancy in swine without altering intrauterine content of estradiol 17 beta or progesterone, embryo migration, or estradiol-17 beta synthesis by blastocysts. However, serum concentrations of progesterone were reduced 2 to 3 weeks after mating in gilts that ingested zearalenone. Therefore, progesterone was administered to gilts during early pregnancy to determine whether it could counteract the detrimental actions of zearalenone on embryonic development. Thirty-two crossbred gilts (Hampshire x Chester White x Yorkshire x Duroc) were assigned randomly to a 2 x 2 factorial arrangement of treatments: zearalenone (Z); zearalenone plus progesterone (ZP); progesterone (P); or control (C). From postmating days 4 to 15, Z- and ZP-treated gilts were fed 1 mg of Z/kg of body weight, and P-treated and C gilts were fed ethanol as vehicle in a corn-soybean diet. On postmating days 3 to 15, P- and ZP-treated gilts were injected IM with 100 mg of progesterone, and C and Z-treated gilts were injected with progesterone carrier (15% ethanol, 15% benzyl alcohol, 70% propylene glycol). Blood was collected from gilts by puncture of the jugular vein daily from days 3 to 15, on alternate days from days 17 to 31, and then twice weekly until the end of the experiment. Fetal development was assessed in Z- and ZP-treated gilts on postmating day 47.6 +/- 2.9 by cesarean section and in P-treated and C gilts at slaughter on postmating days 51.2 +/- 3.2. Serum concentrations of progesterone in P-treated gilts were greater on days 7 to 8, 10 to 15, 17, and 19 than in C gilts. Serum concentrations of progesterone were greater on days 8, 10, and 12 in ZP-treated than in C gilts. However, serum concentrations of progesterone were lower in ZP-treated gilts than in C gilts on postmating days 19 to 31.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

家鸡蛋壳组织结构的扫描电镜观察   总被引：4，自引：1，他引：3  

龙小海  田茂春  蒋顺时  向荣淑  徐恢仲  许由  单天锡  黄勇  杜世铭 《中国家禽》1995,(Z1)

用扫描电子显微技术对家鸡蛋壳结构进行研究的结果，进一步直观形象地丰富了我们在这个领域的知识。  相似文献   

Renal neoplasia of snakes     

E R Jacobson  P H Long  R E Miller  L W Kramer  B Beehler  J C Harshbarger  C D Buergelt 《Journal of the American Veterinary Medical Association》1986,189(9):1134-1136

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Necrotic Enteritis in Broiler Chickens I. A Review of the Literature and the Prevalence of the Disease in Ontario   总被引：2，自引：2，他引：0       下载免费PDF全文

J. R. Long 《Canadian journal of veterinary research》1973,37(3):302-308

The available literature on necrotic enteritis in broiler chickens is reviewed.

The records of three poultry diagnostic laboratories in Ontario were examined for the years 1969, 1970 and 1971. During this period 855 (7.7%) of 11,076 consignments of broiler chickens examined were diagnosed as necrotic enteritis. The condition was most common in broilers at three weeks of age, with 66% of all cases occurring in chickens between two and four and one half weeks. The disease occurred throughout the year but it was most common during July, August, September and October. Necrotic enteritis often occurred more than once per year on a farm.

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Histoplasmosis in a harp seal     

T M Wilson  M Kierstead  J R Long 《Journal of the American Veterinary Medical Association》1974,165(9):815-817

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