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以河套平原的磴口县作为光肩星天牛疫区试点,选用18个速生杨无性系试材,长期观测其对光肩星天牛的抗性并连年调查无性系生长情况。光肩星天牛适应性较强的5个无性系(转基因12、OP-367、新疆杨、美青3-69、北抗16-4),5-8a仍有未愈合的羽化孔,属感虫;7个无性系(Simplot、110、美青64、93美8-6、荷兰速生杨、306-45、DN-34),天牛的适应性适中;其余6个无性系(北抗16-8、北抗16-17、北抗16-18、北抗16-22、北抗16-27、银中杨)天牛适应性较差。 相似文献
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近几年,各地在速生树种引进方面有些盲目追新,导致有些树种生长慢,抗逆性差。为全面考察这些新引进树种的速生性和抗病虫能力,我们对常德市杨树、桤木不同品种造林生长情况进行了专项调查。从近2～3年全市引进造林的16个杨树品种和 2个桤木品种中筛选出了前期生长表现比较优良的几个品种。从调查的情况来看,在不同立地条件类型下造林,杨树平均胸径生长速度较快的前12个杨树品种依次为中林2025杨、鲁山杨、圣山杨、中潜3号杨、中汉系列杨、中林108杨、2001杨、转 相似文献
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杨树伐根嫁接更新造林优良品种的筛选试验 总被引：2，自引：2，他引：0
《林业资源管理》2013,(6):148-153
以小美旱杨为砧木,选择107杨、108杨、111杨、沙兰杨、北抗创新杨1号、中林2001杨和转基因杨7个杨树品种作接穗进行伐根嫁接,在北京大兴区分别设置了3块试验地的3个品种对比试验。结果表明:1)以小美旱杨为伐桩,3块试验地中北抗创新杨1号成活率和保存率均最低,其余6个品种接穗成活率和保存率分别在80%和90%以上。2)试验地1嫁接品种107杨、108杨、111杨的平均胸径、树高和单株材积均较大,且之间无显著差异;试验地2嫁接品种107杨、沙兰杨的平均胸径、树高和单株材积与北抗创新杨1号差异显著,107杨与沙兰杨的平均胸径、树高和单株材积差异不显著;试验地3嫁接品种107杨的平均胸径、树高和单株材积与中林2001杨、转基因杨差异显著,中林2001杨与转基因杨的平均胸径、树高和单株材积差异不显著。3)107杨、108杨、111杨、沙兰杨是适宜杨树伐根嫁接造林的优良品种。 相似文献
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《Journal of Sustainable Forestry》2013,32(2):47-62
Abstract Rapid growth rates and versatility have made hybrid poplar (Populus L.) a common choice to fulfill timber and pulp needs in temperate regions with adequate precipitation. Hybrid poplar production in drier regions has recently received interest as an irrigated source of cut logs and shredded fiber. Ten hybrid poplar clones were selected from nurseries in Washington and Oregon to determine their growth potential and water-use requirements on a calcareous soil at the NMSU Agricultural Science Center in Farmington, NM. Planted in May 2002, the clones were evaluated for survival growth characteristics over two seasons. Clones 50-194 and 184-411 had poor survival and were not continued during the 2003 season. Clone OP-367 had low chlorosis ratings, the greatest height (4.16 m), basal diameter (9.16 cm), diameter at breast height (4.65 cm) and wood volume (2.87 m3 ha-1) during both seasons. A range of responses to environmental conditions of the Four Corners region was exhibited. Mid-season leaf greenness, as determined with a SPAD-502 chlorophyll meter, was a good predictor of growth characteristics. OP-367 appeared to be a potential candidate for inclusion in drip-irrigated wood production strategies for this and other arid/semi-arid regions of the world. 相似文献
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M. K. O’Neill C. C. Shock K. A. Lombard R. F. Heyduck E. B. G. Feibert D. Smeal R. N. Arnold 《Agroforestry Systems》2010,79(3):409-418
The rapid growth rates of hybrid poplar (Populus spp.) enable rotations of 3–6 years for biofuels or 10–15 years to obtain merchantable timber, but many clones are susceptible
to nutrient deficiencies when grown in alkaline soils. A 1995 Oregon study demonstrated that clone OP-367 (P. deltoides × P. nigra) was the only clone tested that performed well on alkaline soils. Tests in Colorado and New Mexico confirmed the adaptation
of this clone. A multi-clonal trial was established in 2003 at Farmington, New Mexico and Ontario, Oregon in order to screen
a larger number of clones for adaptability to alkaline soils. Trees were planted at 1.5 × 1.5 m spacing and irrigated by surface
drip irrigation. Diameter at breast height (DBH) and tree height were recorded annually (2003–2006); wood volumes (WVol) and
total aboveground biomass (TAB) were calculated from these measurements. Of the 25 clones tested, 19 were common to both sites.
Mean height was greater at the Ontario site through the first 3 years (2003–2005). By the end of four seasons, the tallest
Farmington entry was OP-367 at 9.4 m with 177 Mg ha−1 TAB while the tallest Ontario entry was Malheur-3 at 8.9 m with 195 Mg ha−1 TAB and several other clones had statistically similar production. Given the growth and productivity range at these two sites,
it is difficult to make generalizations across wide areas, but it appears feasible to identify clones suited to alkaline soils
in arid and semi-arid regions. 相似文献
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对16个杨树无性系树高、胸径、冠幅等指标进行了测量,也对周期性生长量变化作了测量,同时对杨树无性系的健康状况进行了调查。结果表明：在不同区域,16个欧美杨的成活率均值为54.87%;16个欧美杨在6个栽培区域地径和树高差异不大,除了11116和116地径差异波动较大,其他各无性系在地径和树高方面波动差异均不明显;通过试验处理及调查不同区域中16个欧美杨所表现的成活率、地径、树高、叶子病概率、溃疡病概率和木穴病概率特性,80号、1190号、131号、1233号、1171号、1227号、276号、11116号、139号和116号为杨树优良品种可作为进一步选育的材料。 相似文献
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The ecophysiological, morphological, and growth characteristics of 14 poplar clones were studied during 37 days of flooding and a 13-day recovery period. Cuttings were subjected to three soil water regimes, viz. drained (control), shallow flooding to 10 cm above the soil, and deep flooding to a depth of 120 cm. All hybrids modified their ecophysiological and morphological patterns to decrease carbon loss and maintain water balance. In response to flooding, all 14 hybrids reduced their expansion and initiation of new leaves, reduced height and root collar growth, and reduced the number of leaves. For shallowly flooded plants, adventitious roots developed by day 14, and their number increased with flooding duration; net photosynthesis, stomatal conductance, and growth decreased significantly compared with the control; dry weights of roots, leaves, and total biomass decreased and the allocation of growth to shoots and roots changed. After flooding ended, net photosynthesis recovered, but stomatal conductance recovered before net CO2 assimilation since photosynthesis was limited by stomatal factor at the initial stage of stress and it was limited by non-stomatal factors over relatively long periods of stress. Transpiration and the amount of water obtained from the roots both decreased. In the deeply flooded plants, similar but often more severe changes were observed. Based on our results, we classified the hybrids into three types using hierarchical cluster analysis. Clones 15-29, 196-522, 184-411, 306-45, 59-289, DN-2, DN-182, DN-17, DN-14274, NE-222, DTAC-7, and R-270 were flood-tolerant, clone NM-6 was flood-susceptible, and clone 328-162 was moderately flood-tolerant. 相似文献
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湖北省南方型杨树人工林立地指数表的编制 总被引：3，自引：0，他引：3
根据全省杨树主栽品种混系造林的生产实际以及南方型杨树品种(品系)间高生长过程的相似性,利用31块标准地优势木树干解析资料,把方程lgH=0.730+0.6011lgA作为导向曲线数学模型,编制了湖北省南方型杨树立地指数表。该表对于指导杨树的分类经营、定向培育,以及配套经营技术的研究与开发具有重要意义,同时,对于树高生长过程与南方型杨树相似的其它杨树品种(品系)也可参考使用。 相似文献
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Kevin Lombard Mick O’Neill Robert Heyduck Blake Onken April Ulery John Mexal Adrian Unc 《Agroforestry Systems》2011,81(1):45-56
Composted sewage sludge (biosolids) supply plant available Fe and may represent a sustainable alternative to more costly chelated
Fe fertilizers currently used to supplement nutrition in hybrid poplar test plots of elevated soil pH. To test the response
of poplars, field plots were amended with composted biosolids at two agricultural rates: 22.75 and 44.5 Mg ha−1. Iron EDDHA served as a fertilizer check and control plots received no amendment. The hybrid poplar OP-367 (Populus deltoides × P. nigra) was planted on a 3.6 m grid spacing. Significant amounts of P and Fe originating from the sewage treatment process were
detected in soils 13 months after amending. Chlorosis evaluated with a SPAD-502 meter, showed that poplars amended with biosolids
remained the least chlorotic and had greater tree growth when compared to Fe EDDHA and control plots during two growing seasons.
Biosolids show promise as a cost effective alternative for the remediation of Fe chlorosis in hybrid poplar agroforestry plantations
and present new opportunities in northwestern New Mexico for municipalities seeking solid waste land disposal options. 相似文献
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18个杨树无性系抗光肩星天牛的对比研究 总被引：3，自引：0，他引：3
以河套平原的磴口县作为光肩星天牛疫区试点,选用18个速生杨无性系为试验材料,长期观测光肩星天牛的生活史:产卵、孵化、发育、羽化,并连年调查无性系的生长情况。试验选出6个抗光肩星天牛无性系:北抗16-8、北抗16-17、北抗16-18、北抗16-22、北抗16-27、银中杨;荷兰速生杨、306-45、DN-34等无性系初期抗性较好,但试验年限较短,需要进一步验证;新疆杨对光肩星天牛抗性较弱,但受天牛幼虫破坏后仍能维持比较正常的生长状况。在参试的18个无性系中以北抗16-8综合表现最优。 相似文献
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Michael K. O’Neill Samuel C. Allen Robert F. Heyduck Kevin A. Lombard Dan Smeal Richard N. Arnold 《Agroforestry Systems》2014,88(3):387-396
A provenance test was initiated in spring 2002 at the New Mexico State University Agricultural Science Center at Farmington to examine the adaptability of various hybrid poplar (Populus spp.) crosses to the high elevation, semi-arid conditions of this region of the Southwestern United States. Ten crosses of P. deltoides, P. maximowiczii, P. nigra and P. trichocarpa obtained from nurseries in the Pacific Northwest were grown in replicates (3 plots × 16 trees) under drip irrigation programmed to match tree evapotranspiration (ET) rates. By the end of year 10, six crosses had maintained a 90 % or higher survival rate and had an average wood volume of 246 m3 ha?1. The P. deltoides × P. nigra (P. × canadensis) clone OP-367 surpassed a ten-year commercial target of 25-cm diameter at breast height (DBH) after eight seasons, and by the end of 2011 attained a DBH of 28.0 cm, height of 19.9 m and wood volume of 473 m3 ha?1. Results suggest that hybrid poplar production is possible in this type of semi-arid environment using appropriate germplasm and drip irrigation regimes scheduled according to tree ET demand. 相似文献