东北地区蜂群室外越冬方法

蜂群越冬,分室内越冬和室外越冬,室内越冬需要越冬室和房舍,室外越冬较为简便,可以就地取材,利用锯末子、稻皮、麦余头、树叶、碎草等做包装物,为蜂群生活适应外界气候而增强保温作用,让蜂群生活在自然的温度和湿度当中,再附加以人为管理措施,从而保证蜂群安全越冬。室外越冬的优点是:蜂群越冬安全,节省饲料,蜜蜂体质健壮,早春复壮速度较快,但室外越冬在缺乏成熟经验的情况下     

甘肃马鹿导入东北马鹿杂交改良试验观察

以东北马鹿为父本．甘肃肃南鹿场人工驯养的甘肃马鹿为母本．进行导血杂交改良试验。结果表明：甘肃马鹿导入东北马鹿杂交改良．其杂交后代初生重、断奶重、周岁重和2～3周岁公鹿产茸量均显著高于本地马鹿。     

东北地区屋面防水工程质量探讨

东北地区屋面防水工程质量探讨孙广顺，唐玉林（黑龙江省苇河林业局）目前，屋面防水工程，尤其在东北地区渗漏问题严重。其主要原因：一是防水材料质量问题；二是设计、施工问题。１材料问题屋面防水工程技术规范对防水材料耐久性指标明确规定：一般工程使用年限在１０ａ...     

Broadening soybean genetic basis in the northeast of China

The bottle neek of advancement of soybean breeding inthe Northeast of China is the lack of genetic diversity of the parents used in cross breeding.In order to overcome this constrained condition,under the sponsorship of China National Committe of Natural Science Fundation,a network project with the topic“Broadening and Improving of the Genetic Basis of the Northeast Soybeans“ was established in 1990,and the Northeast agricultural University was apointed to take charge of the project.The project included the following four items:I.Breeding high yield and improved quality Northeast Soybeans,directed by Hcilongjiang Academy of Agricultural Sciencee .II.Development of new soybean gerplasms highly resistant to diseases epidemic in Northeast China directed by Northeast Agricultural University.Ⅲ.Exploitation of the potential of wild and semicultivated soybeans for broadening and improving the genetic basis of Northeast soybeans,directed by Jilin Academy of Agricultural Science.Ⅳ.Improving methods and technique for development of new soybean genetic resources.directed by Nanjing Agricultural University .Each item contained several research subjects conducted by research workers of different institutes of agricultural sicences.During the period 1991-1992.considerable promising new germplasms had been discovered or developed.The new germplasms not only possessed specific improved characters but also behaved with appropriate ecological types adapted to different conditions of Northeast.Among the numerous new germplasms developed.Gong Jio 8757-3 had a protein content of 49.41%,100 seed weight 16-17g,and acceptable agronomic characters,which was considered a very valuable new high protein content germplasm.Such developed new germplasma with enforced and imprved genetic basis will be used primarily as parents in soybean cross breeding.     

从近代引进的西蜂品种看东北地区蜂种的血统结构

从近代引进的西蜂品种看东北地区蜂种的血统结构吉林省养蜂科学研究所（１３２１０８）葛凤晨，陈东海，历延芳１９世纪末，西方蜜蜂开始引进我国的历史，早已载入史册。但因缺乏资料，对考证我国引进西蜂不同品种的历史较为困难。所以，对引进的西方蜂种只能笼统的称之为...     

东北鸟类新纪录—红腹红尾鸲

２００１年１０月 ３０日，在嫩江高峰鸟ｆ环志站（４９°０６‘Ｎ，１２５°１５’Ｅ）鸟类环志过程中，网捕一只红腹红尾鸲（Ｐｈｏｅｎｉｃｕｒｕｓ ｅｒｙｔｈｒｏｇａｓｔｅｒ）雄性个体。量度为：体长１７３毫米、尾长８０毫米、翼长１０２毫米、跗　２５毫米、嘴峰１０毫米、体重２０．９克。该鸟额基、眼先。眼周、颊、耳羽、颈侧、颏、喉、胸、背和翼上覆羽均为黑色。顶、枕灰白。腰、尾上覆羽、腹、胁和尾下覆羽红褐色。肛周羽色较淡。尾羽亦红褐色，但较暗。飞羽黑褐色。除第一枚初级飞羽及最后一枚三级飞羽外，其它飞羽基部内外…     

东北地区耕作制度的演变与发展

东北地区耕作制度的演变与发展隋琪，齐华（鞍山市农业委员会，鞍山１１４０００）（沈阳农业大学农学系，沈阳１１０１６１）东北地区地处东经１１８°５３＇～１３５°５＇，北纬３８°４３＇～５３°３３＇，气候南温北凉，雨热同季，地域广阔，土壤肥沃，由北向南分别...