《湖北民族学院学报·自然科学版》2005年总目录

.第一期· 一类时滞微分方程的全局吸引子的存在性·················································································……赵维锐(001) 几类非线性方程的行波解······································································································……罗琳(oo5) 一类非自治泛函微分系统的不变集与吸引…     

《辽宁师范大学学报》(自然科学版)1991年第14卷总目次

二次系统存在双曲线分界线环的充要条件···················································……沈伯鸯(i)不可加测度的概率特征···················································,·················……花文秀(10)k一严格凸空间的一些性质································,·································……邸孝君(15)关于一个由…     

广西大学学报(自然科学版)1993年第18卷总目次

第1期自由电子激光与馄沌········,····················一·······,······························……王光瑞陈光旨(1)若干LA一群及有关定理·”·····”······”······························”··········“··…俞曙霞班桂宁(6)多处理器系统上的并行选择算法····················“····“······································……钟诚(14)…     

1987年河南科学总目录

第一期共焦对合系与一类AKNS特征值的问题············································……曹策问(l)映象对的不同点和周期点·······························································……郑世斌(11)能源供求予测模型········································································……张立存(16)加成核剂等聚丙烯刀晶生…     

辽宁工程技术大学学报 第24卷增刊(Ⅱ)(总第119期)2005年12月目次

.习户习七J二用垦. 地质动力区划在新汉潘西矿的应用·························································……王志辉，张宏伟，石永生(l) 铁法煤田沉陷灾害分区研究··············································································……梁越，张振文(4) 板石区地温异常分析············································…     

兰州大学学报第29卷——(自然科学版)1993年总目录

数学右逆半群·············……,········································,·······························,·········……罗彦锋(1.1)一类具奇点的解支的延拓方法···························。············································……伍渝江等(1 .6)混合方法的代数稳定性····································…     

贵州大学学报(自然科学版)2003年总目录

专题研究 三值逻辑的C面g中插定理与Hethrand定理·····························································一李祥,李广元(l) MU(l)内公式改名的多项式可判定性·················································································……许道云(9) 标的资产服从一般Ito随机过程的期权定价模型·································…     

《洛阳大学学报》第19卷总目次

散文美:艾青诗歌形式的自由性探寻·························································……黄科安(1一1)古代文学研究二重、三重证据法及其他······················································……邓乔彬(1一5)秦可卿判词新解······························································4·····················…     

《合肥教育学院学报》2000年分类总目录

(本目录括号内是期号和页码) 哲学·政治学·史学生产一般—剩余劳动·跨越卡夫丁峡谷 —兼论社会主义即劳动占有·······························································································……桑朝流(l一l)治人事天莫若裔 —《老子》治安思想探徽············································································…     

内蒙古民族大学学报（自然科学版）2005年总目录

第1期 抛物l子线中极化子的性质········，·······················································，············，·…丁朝华，白旭芳，肖景林(1) 对称环型介观结构中电子的输运性质·····································································，……黄有利，肖景林(6) 束缚磁极化子的光学声子平均数····，···，················一·····…     

湿地松、火炬松种源抗褐斑病试验和抗病优树选择

<正>用人工接种的方法比较国内的八个湿地松种源对松针褐斑病的感病性的结果表明,不同湿地松种源间感病性有差别,但没有达到可以利用它们进行病害防治的程度。自然感染的美国七个湿地松种源和十个火炬松种源也都表现高度感病。湿地松,黑松和火炬松是高度感病的树种,短叶松、长叶松和沙松感病中等,马尾松是高度抗病的。在松针褐斑病流行的湿地松幼林中选择了47株抗病优树,用自然感染法对各优树无性系的感病性测定表明,约有1/2的优树无性系是高度抗病的。     

湿地松对松针褐斑病的抗性测定

从松针褐斑病（Ｌｅｃａｎｏｓｔｉｃｔａ ａｃｉｃｏｌａ）重病林分中选出３６个湿地松（Ｐｉｎｕｓ ｅｌｌｉｏｔｔｉｉ）抗病表现型优树无性系，用人工喷洒病菌孢子液接种法对其进行抗病测定，结果表明，有２２个是高度抗病的。与用松针褐斑病产生的毒素粗提液处理上述无性系的离体针叶进行抗病性测定的结果基本一致，相关系数为０．８０。     

松针褐斑病种子传播的研究

<正>对进口湿地松、火炬松种子抽样检验没有发现种子带菌,也未发现其中夹杂有针叶碎片。松针褐斑     

松针水抽提物及其酸度与抗褐斑病的关系

本研究表明，松针褐斑病菌在抗性不同的松针水抽提液中的生长情况显不同。病菌分生孢子在抗病的湿地松，马尾松以及易感的湿地松和黑松的松针水抽滤液中的萌发率分别为３８．７％，４６．１％，５１．９％和５５．２％。菌丝在抗病的松针抽滤液中生长地也远不及在易感松针的抽滤液中好。抗病和易感湿地松针叶的ｐＨ值和缓冲容量几乎完全相同，马尾松和墨松的松针抽滤液的ｐＨ比湿地松略高些，但缓冲容量比抗病和易感湿地松都小，显然     

湿地松种源试验研究

于１９８３年、１９８４年在广西南宁地区林业科学研究所引种美国８个州４７个湿地松（Ｐｉｎｕｓ ｅｌｉｏｔｔｉｉ）种源。以广东台山湿地松种子园、安徽马鞍山火炬松（Ｐｉｎｕｓ ｔａｅｄａ）和本地马尾松（Ｐｉｎｕｓ ｍａｓｓｏｎｉａｎａ）为对照。采用随机区组设计,重复４次或５次,试验表明,湿地松种源间生长差异显著,其生长性状的变异属地理渐变型,其它性状的变异则属随机型。优良种源主要分布在美国路易斯安那州到     

松材线虫对黑松、湿地松幼苗活性氧代谢的影响

以2月龄黑松（Pinus thunbergii)、湿地松（P.elliottii)幼苗为材料，研究松材线虫（Bursaphelenchus xylophilus)感染对松幼苗活性氧代谢的影响。在接种松材线虫后，黑松较湿地松发病快且重，黑松内超氧化物歧化酶（SOD）、过氧化氢酶（CAT）活性逐渐降低；湿地松内SOD和CAT在接种早期活性增加，随后下降。两种幼苗接种后，过氧化物酶（POD）活性、H2O2和丙二醛（MDA）含量不断增加。H2O2和MDA的积累与植株发病速度呈明显正相关。因此，松材线虫病的发生和发展与寄主植物组织的膜脂过氧化作用有关。     

短周期湿地松纸浆材林的优化经营调控研究

研究确定了短周期湿地松纸浆材林的最适立地条件为16指数级以上,最佳主伐年龄为10～12 a,最适经营密度模型为n=23 360.6/d.以荻取最大树干生物量为经营调控目标,采用动态规划法进行短周期湿地松纸浆材林的优化经营调控,并依据调控结果编制了模式林分的生长过程表和优化经营调控表,以期为湿地松纸浆材林的经营管理提供科学的参考依据.