通径分析在油纤兼用亚麻产量分析中的应用

首先对18个胡麻(Linum usitatissimum Linn.)品系的5个产量构成性状及产量进行相关分析,指出单株粒数和分枝长与产量之间的相关性达显著水平,并且各性状之间还存在着相互作用、相互制约和相互促进的关系。因此对吉林省胡麻产量及其构成性状的关系须采用通径分析方法进行分析,以估算每一个性状对产量的直接作用,以及一个性状通过另一个性状对产量的间接作用。通径分析结果表明,在吉林省提高胡麻产量,可主要通过提高单株粒数和增加分枝数来实现;返青将致使胡麻减产。     

牡丹品种引种栽培试验

以引进的28个山东牡丹品种、16个日本牡丹品种为材料，进行牡丹品种引种栽培适应性观测试验。通过对其生物学特性和物候期的观察分析，为制定科学的栽培管理措施提供依据。     

中缅油气管道国内段砂土液化处理措施

中缅油气管道国内段沿线存在不连续的长距离砂土液化地带,砂土液化是地下管道遭受地震破坏的主要原因之一.为增强管道抵抗土壤液化的能力,通过对砂土液化现象及其危害进行分析,结合油气管道沿线砂土液化特点,对管道敷设深度内有中等、严重砂土液化趋势的地段采取平衡压袋稳管方式进行液化处理.该处理措施具有经济、环保、便于施工、不影响管道主体工程安装和总体工期等特点,而且对于避免和减轻地震灾害,确保油气管道的安全运行具有重要意义,在类似管道工程建设中值得推广应用.(表2,图3,参4)     

温室环境条件变化对北方温室春节催花牡丹植株光合特性的影响

采用英国PP-Systems公司生产的CIRAS-1便携式光合作用测定系统对日光加温温室条件下采用自然低温打破休眠春节催花的牡丹植株肉芙蓉(A)和银红巧对(A)和传统的低温加晾根打破休眠春节催花的牡丹植株肉芙蓉(B)和银红巧对(B)光合特性进行了研究。结果表明:自然低温打破休眠催花牡丹植株叶片的净光合速率、气孔导度和蒸腾速率均高于相应的传统的低温加晾根打破休眠催花牡丹植株叶片相应的指标。在春节催花牡丹温室生态因子中CO2浓度较光合有效辐射对净光合速率有相对较高的灰色关联度。     

Identification of differentially expressed genes associated with bud dormancy release in tree peony （Paeonia suffruticosa） by suppression subtractive hybridization

A subtractive cDNA library was developed to study genes associated with bud dormancy release in tree peonies.In order to identify genes that are highly expressed in buds released from dormancy,588 clones were examined by differential screening.Of these,185 clones were selected to be sequenced.A total of 37 unique sequences were obtained of which only 31 sequences have matches in the NCBI database or the Arabidopsis thaliana protein database.Semi-quantitative RT-PCR was used to confirm further the expression...     

木材干燥窑的保温性与节能分析

常规砖砌壳体木材干燥窑热能消耗大，节能潜力很大，本文通过对窑体保温材料和大门密，保温性能改进措施的分析及应用，结果表明，壳体热损失减少６０％以上，总能源可减少１２％以上，节能效果显著，此外对用热油作为导热介质，也探讨了其节能的可行性。     

Oil separation from wet-milled corn germ dispersions by aqueous oil extraction and aqueous enzymatic oil extraction

The many recent dry-grind plants that convert corn to ethanol are a potential source of substantial amounts of corn oil, if an economical method of separating it can be developed. Oil separation from corn germ by aqueous extraction (AE) was studied. Batches of 5–20% germ in a buffer solution were preheated in a pressure cooker, ground in a blender or colloid mill, churned in an incubator/shaker and centrifuged to separate a free oil fraction. The highest oil yields were obtained when the germ mass fraction was between 0.1 and 0.16. Addition of an enzyme solution to the ground germ suspension prior to churning, aqueous enzymatic extraction (AEE) gave an oil yield twice as high as the AE yield, carried out using similar conditions. Both types of extraction produced the most oil after a 122 °C cook followed by churning at 160 rpm and 70 °C. Oil yield increased linearly with dispersion loading, from 0.5 up to 1.0 g/cm² based on beaker cross-section (0.09–0.12 germ mass fraction). Over a several month period the germ used for the extractions became more difficult to extract, despite storage at 4 °C.     

滇中地区引种牡丹的生态分析

通过比较中原牡丹品种、甘肃紫斑牡丹品种和丽江牡丹品种在引种地的枝条实存率、成花率、休眠芽萌动情况等生长发育表现 ,结合滇中气候特点和各品系的生态习性及生长发育情况分析 ,确认在本地区具有的引种生态潜力。建议在滇中地区引种丽江紫、脂红等牡丹品种较适宜。     

洛阳红牡丹抑制栽培技术研究

在低温条件下，对洛阳红牡丹植株延长休眠期：根据不同时期需要，解除植株休眠进行人工栽培，实现非自然花期开花，牡丹植株冷藏时间与失重率呈显著正相关，与开花质量呈负相关，冷藏植株间填充物以鲜苔藓和珍珠岩为宜．     

微生物对油污地石油的降解作用及影响因素

生物降解有机物可能成为净化土壤和水资源的一种有效方式.生物降解手段的成本与焚化、贮存或土壤清洗相比要低.重点探讨了微生物对油污地石油降解的机理,分析了影响微生物降解的相关因素,包括营养物质和化合物、氧气、水、温度、核酸等,还探讨了油污地降解过程中植物的作用及生物降解微生物的作用,以期为油污地的治理提供基础理论依据.