盖草能的高效液相色谱分析

用反相液相色谱建立了分析除草剂盖草能含量的方法，采用ＯＤＳ－Ｃ１８柱（２５０ｍｍ×４．００ｍｍｉ，ｄ），以乙腈－水（７３∶２７）为流动相，用紫外２４０ｎｍ检测，本方法的线性实验，回收率实验、精密度实验均良好，产品测定的变异系数为０．６７％，小于１．５０％。     

Breeding and trial cultivation of Dongfang No. 3, a hybrid of Laminaria gametophyte clones with a more than intraspecific but less than interspecific relationship

Dongfang No. 3, a Laminaria hybrid, was bred by hybridizing a female gametophyte clone isolated from Line 7 of L. japonica with a male one isolated from Line LZZ which was developed through hybridizing female gametophyte clones of L. lonngissima and male gametophyte clones of L. japonica followed by continuous self-crossing and tolerances of strong irradiance and high seawater temperature targeted selection. The parental gametophyte clones of Dongfang No. 3 have a more than intraspecific but less than interspecific relationship. The seedlings of the hybrid were raised with the techniques of gametophyte clone asexual reproduction and hybridization and cultivated on trial. The dark brown hybrid has a wide, uniform, ripple-less and very tough blade and a very robust holdfast. A deep vertical groove and a half-round joint between stripe and blade distinguished also the hybrid from the varieties of L. japonica. The hybrid is tolerant of strong irradiance and high seawater temperature and resistant to the tissue rottenness of blade tip and edge. The hybrid matured later than the varieties of L. japonica widely used currently. The trial cultivation of this Laminaria hybrid has reached > 406 ha in total. It increased the yield by 60.5% and 54.8% in average on that of Benniu (Control I) and Zaohoucheng (Control II), respectively, and by 62.4% and 75.8% on that of Line LZZ and Line 7, respectively, as were observed in Weihai, Shandong Province, China, in 3 continuous years, and by 57.0% and 32.1% in average on that of Control I and II, respectively, across 10 sites on the coast of north China in 2 continuous years. The breeding and application of Laminaria hybrids have paved an avenue of the direct use of heterosis, the easy integration of elite agronomical traits and fast renewing of Laminaria varieties.     

国家林业局管理干部学院绩效考核实践探索与研究

绩效考核是机关事业单位人力资源管理的一项重要内容。我院近几年来在绩效考核实践中探索建立了一整套考核标准,发挥了积极作用。但目前仍存在不少值得注意和有待解决的问题。应进一步研究和探索,设计科学合理且行之有效的绩效考核指标体系与考核办法,从而调动教职工的工作积极性,提高学院的管理水平。     

荒漠草原不同放牧强度下长芒草种群补偿性生长的研究

在宁夏盐池县四墩子荒漠草原,比较研究了不同放牧强度下长芒草种群地上净初级生长量及家畜采食率的变化,并进行相关回归分析.结果表明,在适度放牧条件下,长芒草种群具有补偿、超补偿性生长,而在重度放牧条件下,长芒草种群表现为欠补偿生长.     

家蚕五种幼虫斑纹浓淡型间的遗传

以本研究室家蚕基因库保存遗传系统的幼虫斑纹为观察对象，发现暗色斑（P^M）．黑缟斑（P^S）．杲蚕（U）鹑斑（q)．褐圆斑（L）均存在斑纹浓淡程度不同且表型稳定的多型系统。根据杂交后能够识别浓淡型性状分离，将暗色斑分成浓型（P^M3)．中型（P^M2)和淡型（P^M1)，黑缟斑分成浓型（P^S2)．淡型（P^S1)，杲蚕分成浓型（U^2)和淡型（U^1）,鹑斑分成浓型（q^3)．中型(q^2)和淡型（q^1)，褐圆斑分成浓型（L^2)和淡型（L^1)。同种斑纹内浓淡型间相互杂交，整体上均表现为等位基因的遗传模式，相对的浓型对淡型为显性，即：P^M3＞P^M2＞P^M1,P^S2＞PS1,U^2＞U^1,q^3＞q^2＞q^1,L^2＞L^1。     

牙鲆Paralichthys olivaceus(Temmincket Schlegel)的养殖技术

牙鲆是我国海水鱼养殖的重要对象。本文扼要介绍牙鲆室内水泥池养殖、牙鲆网箱养殖技术等内容，对生产单位有一定的参考价值。     

Impacts of dams on the sediment flux of the Pearl River,southern China

Draining toward the South China Sea, the Pearl River is the third largest river in China. Based on datasets begun in the 1950s of water and sediment flux at the main gauging stations and measured deposition rates in some reservoirs, this paper examines the impact of dam construction on the sediment flux of the Pearl River. The results and conclusions are as follows: (1) The total storage capacity of reservoirs in the Pearl River basin had reached 65 km³ by 2005, which is 23% of the annual water discharge of the Pearl River. (2) The total deposition rate in the reservoirs has now probably reached 600 Mt/yr, one order of magnitude higher than the annual sediment flux into the sea (40 Mt/yr in 2000–2005). (3) The sediment flux of the Pearl River has shown a drastically decreasing trend since the mid-1980s, which is attributed mainly to deposition in the reservoirs. (4) A further decrease in sediment flux into the sea is expected to occur in the Pearl River in future decades because of the construction of new dams. This drastic decrease in sediment flux may be very import for the environments of the river channel, the estuary and the coastal areas, which need to paid considerable attention in scientific research and management.     

试从国际法视角看中日钓鱼岛之争

本文介绍了钓鱼岛名称的由来、钓鱼岛争端的实质及钓鱼岛争端中“美国因素”的考量,分析这一区域对中日两国重要的政治、经济、军事意义以及美国在钓鱼岛争端中所扮演得的角色。提出“搁置钓鱼岛主权争议,共同开发东海海洋资源”等可行的解决方案。     

鸡大肠杆菌Ⅰ型菌毛亚单位苗交叉保护的初步研究

含Ⅰ型菌毛的３ 个不同血清型（Ｏ１ 、Ｏ７８ 及Ｏ８８） 的菌株， 大容量培养后提取菌毛制备３ 种单价菌毛油乳苗。用１ 日龄雏鸡分别免疫３ 种单价菌毛油乳剂苗， 每雏免疫量为１２５ μｇ ， 隔离饲养至２ 周龄经气囊攻毒， 并评价疫苗的免疫原性。结果未免疫鸡出现８７－５ ％ ～１００ ％ 的死亡率， 免疫鸡用同源菌株攻毒后死亡率仅１２－５ ％ ， 用异源菌株攻毒出现３７－５％ ～６２－５ ％ 的死亡率。免疫鸡攻毒后未死亡者， 经扑杀观察， 可见在气囊、心包及肝脏的病变非常轻微， 且攻毒后比非免疫鸡能更有效地清除攻入气囊的大肠杆菌