10个热带滨海城市防台风防护林树种的早期生长分析

通过对海南三亚城市防台风试验示范林的10个参试热带树种从地径、树高和冠幅三个生长指标进行跟踪监测,分析各个树种的生长状况,综合比较其生长速度后,列出这10个树种的生长排序,并对各树种的早期生长特性及适宜种植模式进行了初步评价,结果表明:格木、非洲楝、孔雀豆等生长速度较快的树种可以作为城市防台风林群落构建的中上层乔木或者早期先锋树种,而生长慢的长叶马府油、小叶杜英等则可以作为中下层和后期演替树种或防风林带前沿树种,研究结果可为三亚市防台风防护林建设和城市景观森林群落构建提供科学依据。     

基于成本—收益理论的社会医疗保险欺诈问题研究

通过引入成本—收益理论,对社会医疗保险制度中的欺诈问题进行研究,比较该制度中各参与主体的成本、收益构成,分析各影响因子对欺诈与反欺诈行为的影响,研究表明:欺诈与反欺诈行为受行为成本、行为收益大小的制约,且有其相应的约束条件。在此基础上,提出了相应的反欺诈对策。     

气象条件与苎麻农艺性状形成关系研究

多点试验结果表明：高温、强光和高蒸发量增加株高，却减少有效株数，不利高产优质；生长中后期总日照时数较多则利于茎粗、皮厚、鲜皮出麻率和产量提高并降低原麻含胶率；雨日和雨量较多能增加有效株，提高支数；较高相对湿度使茎粗、皮厚、有效株、鲜皮出麻率及产量和支数提高、原麻含胶率下降。总辐射量大抑制除株高之外其它经济性状发育，造成低产劣质。     

玉米秸栽培平菇的研究

在玉米秸栽培平菇的试验中，对玉米秸的粉碎粒度，发酵处理方法以及适合玉米秸栽培的平菇品种的筛选都做了系统研究，结果表明，以孔径１５ｍｍ筛子粉碎料的效果最佳；发酵料料水比为１∶１６，采用开放式发酵法效果最佳；适合玉米秸栽培的平菇品种以青丰３号和ＰＬ３两个品种最好，生物学效率达１２０％以上。     

湖南省茧蜂记述

按van Achterberg(1990)分类系统，报道了湖南省茧蜂15亚科38属104种，其中小腹茧蜂亚科的分类，按Mason(1981)分类系统处理。介绍了属名变动或种名定名的变化情况，并提出著者的看法。同时根据对湖南蝽茧蜂(Aridelus hunanensis You,Xiong et Zhou和橙足蝽茧蜂Aridelus rutilipes Papp雌雄外生殖器，以及对黄长柄茧蜂Streblocera flava You et Xiong和冈长柄茧蜂Streblocera okadai Watanabe雄性外生殖器研究，对陈学新和van Achterberg(1997)认为湖南蝽茧蜂是橙足蝽茧蜂的次定同物异名，黄长柄茧蜂和冈田长柄茧蜂是同种的看法提出了质疑。     

温室立体式茶树育苗机的设计

针对传统茶树温室育苗架存在的占地多、劳动强度大及生产率低等问题,设计了一种立体式茶树育苗机。该机可一次性培育茶树苗4608株,转速控制范围为0.01~0.1r/min,可满足茶树苗不同生长阶段对光照时间的需求。其使用不仅提高了茶树育苗的自动化水平,而且相比于传统温室育苗,设施育苗的面积利用率提高到208.96%,成苗率提高了7.85%。     

Effect of Different Crossbred Combinations on Fatting Performance in Beef Cattle

This study was aimed to determine the effects of different crossbred combinations on fatting performance in beef cattle. Using single factor randomized block design, 30 bulls (health, similar weight and age) were chosen, Simmental cattle×Kerqin beef cattle (group A), Charolais cattle×Kerqin crossbred beef cattle (group B) and Kerqin beef cattle (group C) were divided into three groups with 10 bulls per group. After 95 d, the body weight, slaughter performance, meat quality and the economic benefits of fattening were measured. The results showed that there were no significant influence on dry matter intake among trials (P>0.05). The F/G, ethanolic extract (EE) of muscle in crossbred groups (groups A and B) were significant lower than group C (P<0.05). The weight of carcass, weight of meat, rate of carcass, and the weight of shank, plate, chine and rump in crossbred groups were significant higher than group C (P<0.05). There were no significant difference in content of amino acids among groups (P>0.05),and it had difference in the content of palmitoleic acid (PAA),stearic acid(SA) and linoleic acid (LA). In this trial, it had better fattening performance and the economic benefits in crossbred cattle groups than Kerqin beef group cattle, but the ethanolic extract and unsaturated fatty acids of muscle in Kerqin beef cattle were higher than the crossbred groups, and it had better fattening performance by crossbred.     

打造阿勒泰休闲旅游城市的构想

本文针对阿勒泰城市发展所面临的现状,提出以旅游的名义提出其的发展定位,以旅游产品来支撑其城市定位,以此实现阿勒泰由综合中心城市向休闲度假城市的转型。     

Pb2+对甘肃纹党种子萌发和幼苗生理特性的影响

以甘肃道地中药材纹党(Codonopsis pilosula)为对象，通过室内培养试验，研究不同浓度10^-6、10^-5、10^-4、10^-3 mol/L Pb²⁺处理对纹党种子萌发、幼苗生长以及生理特性的影响，为探究Pb²⁺污染对纹党品质的影响提供依据。结果表明，Pb²⁺对纹党种子吸胀过程中相对吸水量的增加有抑制作用，随着Pb²⁺浓度的提高，党参种子的萌发率、萌发指数、幼苗生长及根尖微核和有丝分裂率变化，表现出先升高后降低的趋势；低浓度的Pb²⁺处理能够促进叶绿素的形成，高浓度则抑制叶绿素形成；可溶性糖、游离脯氨酸和丙二醛含量，随Pb²⁺浓度的升高而增加；Pb²⁺对SOD、POD和CAT活性有较强的抑制作用。可见，生物测定结果大多达到显著差异水平。