火炬松芽苗移栽无轻型基质网袋容器育苗技术

火炬松芽苗移栽无土轻型基质网袋容器育苗技术，是西峡县林技站把中国林科院无土轻型基质网袋容器育苗技术与传统的芽苗栽袋容器育苗技术相结合，研究出来的一种容器育苗新技术。较传统容器苗木具有基质来源广泛、成本低、环保、质量轻、苗木长势好、成活率高等优点。     

北美红杉芽苗移栽容器育苗技术

介绍了北美红杉形态特征及生物学特性,并论述了其种子采集、储藏和处理,苗床、育苗基质的准备,播种、芽苗移栽、幼苗的管理以及病虫害防治等技术措施。     

甘蒙锦鸡儿芽苗切根移栽容器育苗试验

使用4种激素IAA、IBA、NAA、ABT,3种浓度10、20、30(单位mg/L)进行甘蒙锦鸡儿芽苗移栽技术试验,试验结果表明:芽苗切根移栽可以显著提高成苗率和单位面积产苗量,使用IBA10mg/L和ABT10mg/L,可以极显著地促进侧根数的增加。提高了苗木质量和整齐度,适用于种子具休眠特性或种子发芽率不高、空杯率高的树种。     

板栗芽苗移栽育苗技术

板栗芽苗移栽育苗技术谢留运（湖北省钟祥市林业科技推广中心，４３１９００）板栗种皮致密、坚硬，用常规方法育苗，发芽慢、易霉烂、出苗不整齐，不便于田间管理。采用芽苗移栽育苗，于前１年秋冬季播种，塑料薄膜拱棚内培育芽苗，春季移栽，比大田直播育苗出苗早、苗木...     

银杏芽苗移栽育苗技术

银杏树俗称白果树,是非常古老的历史残遗树种,为我国特有。目前世界各国所有活着的银杏大树无一不源于中国。为了加速培养良种壮苗,向社会提供大量苗木,我们在培育银杏苗木过程中,进行了芽苗移栽研究试验,其方法如下。一、育苗1.苗田选择选择避风向阳、地势平坦、水源充足、方便、土壤疏松、肥沃、pH 值6.5～7.5的粘质壤土,前作水田或旱田皆宜,瓜类和蔬菜田不宜     

南方红豆杉芽苗容器移栽育苗技术

对南方红豆杉芽苗容器移栽育苗进行了试验,结果表明:芽苗容器移栽育苗技术较以往传统方法播种育苗出苗率高,节约种子及土地资源,苗木质量好,产苗量高,能明显延长苗木的生长期,苗木当年平均生长量可达15cm。     

湿地松种子芽苗容器移栽育苗技术

<正>湿地松(Pinus elliottii Englm)原产于美国东南部,属于松科常绿大乔木。多年来,南安市诗山镇进行湿地松种子育苗造林,采用百日容器育苗,种子应用不同方法浸种,可提高种子发芽率,在短时间内即可上山造林。     

湿地松、火炬松育苗新方式的改进试验——芽苗移栽工具打孔器的创造和应用

报道了湿地松、火炬松育苗新方式的改进—芽苗移栽工具打孔器的创造和应用,不仅比常规播种育苗省工,而且种子利用率、苗木出圃率及苗木质量均普遍提高,每0.07hm~2育苗可增加经济收入1900多元,在国外松育苗地区具有广阔的应用前途。     

火炬松引种试验报告

火炬松原产美国东南部 ,生长在海拔 40 0m左右的低山丘陵 ,是优良的用材薪炭树种。我国淮河以南的广大丘陵地区都有引种 ,并生长良好。1 992年我们开始引种火炬松 ,并对火炬松生长进行观察研究 ,现将结果报告如下 :1　引种区概况滕州市地处山东省南部 ,与江苏省接壤 ,属暖温带半湿润季风气候 ,气候和土壤情况都与火炬松的原产地相近 ,见附表。附表　滕州市火炬松引种点及美国火炬松原产地概况地点引种年份 纬度经度 海拔(m)平均温度(℃ )年降雨量(mm)绝对最低温度 (℃ )无霜期(d) 土壤东戈镇1 993北纬35°2 1′东经1 1 7°1 6′ 2 0 0 1 4.6…     

火炬松半同胞家系苗期生长分析

从美国引进三代火炬松(Pinus taeda)半同胞家系种子开展育苗试验,9个月后对其苗高和地径进行了测定分析与比较。结果表明：三代火炬松半同胞家系间苗高生长差异极显著（P<0.01）;地径生长没有显著差异,生长均较好。对苗高进行Duncan分析,筛选出L2、L9和L5为苗期生长优良家系。     

火炬松育苗技术研究

火炬松育苗试验结果表明:火炬松大田育苗最佳的处理组合为苗木密度100~150株/m2、芽苗截根处理以保留芽苗主根长的50%、接种厚环乳牛肝菌Sg;火炬松容器育苗最佳的基质配方体积比为火烧土30、过磷酸钙2.5或5.0、深层红壤35、松林表土35两种组合;菌根化处理是火炬松容器育苗行之有效的措施,菌根化对容器苗苗高、地径的生长有比较明显的正效应。     

火炬松松针多糖提取工艺及其抗氧化性研究

以多糖得率为指标,从火炬松松针中浸提多糖,并测定其体外抗氧化活性。在单因素试验基础上采用响应面法优化超声波辅助热水浸提火炬松松针多糖,最佳的工艺参数为:30 g松针粉末在超声波作用时间25 min,热水浸提1 h,液料比25∶1(m L∶g),热水浸提温度91℃。在此条件下,火炬松松针多糖得率达1.867%,提取率达91.39%。通过测定松针多糖对苯基苦基肼自由基(DPPH·)、羟基自由基(·OH)和2,2-联氮-二-(3-乙基-苯并噻唑-6-磺酸)自由基(ABTS+)的清除能力评价其体外抗氧化能力。结果显示:火炬松松针多糖对自由基DPPH·、·OH和ABTS+都有较强清除能力,且都呈较好的量效关系,火炬松松针多糖具有较强的体外抗氧化能力。     

湿地松苗木培育技术

根据湿地松的生物学特性,结合多年来培育湿地松苗木的实践,总结出简单、实用的培育湿地松良种壮苗的技术。     

Early genetic evaluation methods for cyclic growth in Pinus taeda L.

The seedling growth trait, cyclic growth, is well-correlated with older-tree heights measured in Pinus taeda L. field trials. These results have been repeatable across locations and seed sources if a standard greenhouse procedure is followed. This work is been limited to cyclic growth measured on P. taeda families and seed sources. The use of a standard greenhouse procedure will facilitate comparison with other early genetic evaulation methods for P. taeda and with similar studies on other Pinus species.     

3种氨基酸对火炬松苗期生长的影响

分析1 a 生火炬松（Pinus taeda）幼苗施复合肥前后氨基酸含量变化,筛选出含量变化较大的3种氨基酸,设置3种氨基酸不同浓度组合,采用土壤施肥和叶面喷施,通过方差分析及 Duncan 多重比较检验,筛选出合适火炬松的氨基酸浓度组合和施肥方法。结果表明：（1）施用复合肥前后氨基酸含量变化较大的有9种,其中缬氨酸、组氨酸、天冬酰胺含量较大,且均为水溶性氨基酸;（2）总整体来看,芭田复合肥对苗木的生长促进效果不如氨基酸施肥;（3）采用土壤施肥,缬氨酸0.192 g/L+组氨酸0.163 g/L+天冬酰胺0.309 g/L 对苗高和生物量的促进效果最好;采用叶面喷施,缬氨酸0.256 g/L+组氨酸0.163 g/L+天冬酰胺0.412 g/L 对苗高和生物量的促进效果最好;（4）在5项生长量指标测定中,叶面喷施的指标值大部分高于土壤施肥。综上所述,对火炬松幼苗生长促进效果最优的施肥方式为叶面喷施缬氨酸0.256 g/L+组氨酸0.163 g/L+天冬酰胺0.412 g/L。     

Response of planted Pinus taeda L. to brush control in Northern Louisana

Eradication of brush, defined as hardwood trees, shrubs, blackberries, vines, and volunteer pines, was not necessary to maximize juvenile pine growth in northern Louisiana Pinus taeda L. plantations. Pine height and diameter gains were similar on treatments when either (1) only the above ground portion of the brush was cut yearly or (2) both the above ground stems and root systems of brush species were controlled each year. At age 10, planted pines on both treatments averaged 0.9 m taller with a 2.5 cm greater stem diameter at breast height (1.4 m) than those on untreated checks. Total outside bark volume per pine averaged 51.9 dm³ on checks vs 78.5 dm³ on treated plots.     

Distribution of lignin in normal and compression wood of Pinus taeda L.

Summary The distribution of lignin in normal and compression wood of loblolly pine (Pinus taeda L.) has been studied by the technique of lignin skeletonizing. Hydrolysis of the wood carbohydrates with hydrofluoric acid left normal wood tracheids with a uniform distribution of lignin in the S1 and S2 cell wall layers. However, the S3 region of both earlywood and latewood tracheids consistently retained a dense network of unhydrolyzable material throughout, perhaps lignin.Lignin content in compression wood averaged about 7% more than in normal wood and appears to be concentrated in the outer zone of the S2 layer. The inner S2 region, despite helical checking, is also heavily lignified. The S1 layer, although thicker than normal in compression wood tracheids, contains relatively little lignin.Ray cells, at least in normal wood, appear to be lignified to the same extent, if not more so in certain cases, than the longitudinal tracheids. Other locations where lignin may be concentrated include initial pit border regions and the membranes of bordered pits.This report is a detailed excerpt from the Ph. D. dissertation of R. A. P. Financial support provided by the College of Forestry at Syracuse University and the National Defense Education Act is hereby gratefully acknowledged.