原生态黄山松的保护性开发

黄山御墅天筑山地别墅内原生态资源丰富,尤其是原生态黄山松保护性开发成为项目的重点,从现状调查、原因分析、解决实施三个阶段入手,通过规划设计、建造施工和养护管理,合理避让和利用,基地现场的黄山松90%保留,将项目不露痕迹的融合在自然景观里,成为尊重原生态,可持续发展的景观项目。     

A new microassay for antifeedants in<Emphasis Type="Italic"> Hylobius</Emphasis> pine weevils (Coleoptera)

A micro-feeding assay was developed for testing small amounts of synthetics and extracts as antifeedants for Hylobius pine weevils. We devised a simple setup consisting of 5×5-mm pieces of thin layer chromatography cellulose plates used in pairs for a bioassay involving choice. After application of 1.5 l solutions and evaporation of the solvent, each plate received a 5 l aliquot of 1 M sucrose as a feeding stimulant. The test period was 4 h at 25 °C with 6 days of starvation before the test, compared to just the 1 day sufficient for twig tests. Deprivation of water for 1 day at 65% RH before the test was critical because it increased feeding but not mortality. The combination of starvation and thirst reduced the relative variance (coefficient of variation) to below 50%. There was a good correlation of antifeedant activity in the microassay with the activity in a standard twig test. The microassay needs only several mg for a test series, whereas the twig test needs grams.     

松属种间嫁接对松脂化学组成的影响

通过对光松、萌芽松或展松与湿地松嫁接后松树的松脂化学组成的研究，探讨松属种间嫁接对松脂化学组成的影响。结果发现作为接穗的光松、萌芽松和展松的松脂化学特下基本上不变，不具有其砧木－湿地松松脂的特征。     

江西吉安县松树针叶资源的开发利用前景

吉安县是江西省马尾松、湿地松的主要产区之一。大量松树针叶没有得到合理利用，本文叙述了松树针叶的综合利用方法及其在各方面的经济价值，对开发利用吉安县的松树针叶资源提出了几点的看法。     

松针粉饲用价值及市场展望

松什粉是一种高效绿色饲料添加剂。松针资源在全国各地十分丰富，但这种资源没有得到合理有效地利用。从松针粉的饲用价值、生产工艺、市场前景以及研究应用现状说明松针资源和松针产品应该引起社会足够的关注。     

云南景谷地区松脂研究的现状与对策

云南省景谷地区具有丰富的思茅松资源，盛产松脂，为此开展了高产脂种源培育等试验研究，对松树进行多种采脂方法的研究，调查各种采脂方法的实用性，并不断开发新的采脂方法。     

Oviposition and larval performance of Monochamus alternatus (Coleoptera: Cerambycidae) on the Japanese cedar Cryptomeria japonica

To determine whether Monochamus alternatus can use the Japanese cedar (Cryptomeria japonica) as a host tree, experiments were conducted in a laboratory using three insect populations of different localities. Adult females chose Pinus densiflora bolts as oviposition substrate when supplied with cedar and pine bolts simultaneously, whereas some females from one locality oviposited on cedar bolts when supplied with them exclusively. Seventy-three percent of 40 eggs hatched in cedar bolts. When the first instar larvae were inoculated on cedar bolts, the development was stunted greatly and all died during the larval stage. Two of 20 larvae that were inoculated on cedar bolts at the third instar entered the diapause and one larva developed into an adult female, which produced viable eggs but was much smaller than those obtained from pine bolts. The results did not exclude the possibility that M. alternatus can use recently killed C. japonica trees as a host.     

松脂液加氢反应的研究

松脂液在催化剂存在下加氢，可同时获得氢化松香与蒎烷，所得氢化松香颜色浅，质量好。采用低温活性好的触媒，在较低温度及合适压力下，可使蒎烷中顺式与反式之比达到７．５￣８．５，精馏后可达９￣１０，从而满足了香料工业的要求。加氢产物用气－质联用仪分析，表明脂液中对异丙基甲苯及分子量较大的烯烃（长叶烯及石竹烯等）未参与加氢反应。蒎烷可采用脂液冷却结晶法，使其循环使用。     

基于无损伤取脂的辽西油松资源开发利用策略

通过对辽西油松资源状况及开发利用难点的分析,得出传统取脂方式对油松林的损伤,会严重破坏辽西生态环境,因此传统方式完全不适合辽西油松资源的开发利用。无损伤取脂开发利用策略,不但可以很好地解决辽西油松开发利用的难点,还可以有力地带动辽西油松荒山育林工程。因此无损伤取脂是辽西油松资源开发利用的最佳策略。     

松木粉／聚醚砜树脂复合材料的制备及选择性激光烧结试验

以松木粉、聚醚砜树脂为材料,用SHR－10A型高速混合机制备松木粉／聚醚砜树脂复合粉末;用HRPS－ⅢA型激光粉末烧结快速成型机,遴选出复合粉末可用于选择性激光烧结工艺参数及适宜的预热温度,烧结成型。测量了不同松木粉质量比对复合粉末力学性能的影响,观察并测量了输入不同的能量密度时,烧结试件的成型效果和力学性能。结果表明：随着松木粉质量比的增加,木塑复合材料的力学性能降低。对于松木粉质量比为20％的木塑复合粉末,当输入的能量密度为0．128 J／mm3时,复合粉末即可成型;当输入的能量密度为0．312 J／mm3时,木塑复合材料的拉伸强度达到4．8465 MPa,弯曲强度为8．2152 MPa,冲击强度为1．2574 MPa,此时力学性能最强;若输入的能量密度大于0．312 J／mm3时,出现过烧现象,力学性能下降。采用扫描电镜对烧结件断面的形貌进行了表征。