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沙棘的饲用价值与沙棘饲料的产业开发 总被引：15，自引：5，他引：10
依据有关研究资料，评价了沙棘枝叶、果实的营养价值与饲用价值，用表明其优于小麦麸、苜蓿草粉，具有重要的饲料开发利用价值，是发展沙棘产业的重要方面。 相似文献
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试验对５个沙生灌木树种的引种、生物量、抗旱性、饲料成分及营养价值作了测试和分析，并与乌兰布和沙漠传统饲用灌木、牧草、农副产品饲料进行了比较。结果表明：花棒、梭梭和乔木状沙拐枣不同产地间在高生长、地径生长两个性状上差异显著；乔木状沙拐枣和杨柴的地上生物量低于多枝怪柳（对照）１０．６９％和１８．８７％，花棒、梭梭、毛条分别高于对照１６．９８％、２７．０４％和２．６４％。所选５个树种７项生态生理综合指标反映的抗旱性均高于对照树种二白杨和小叶杨；适于在乌兰布和干旱环境中生长；粗脂肪、租纤维和无氮浸出物高于传统饲料汤、柳、榆树叶；饲料成分及营养价值高于玉米秸和小麦秸；１１种氨基酸总含量分别为：毛条１２．５３％，花棒１０．９１％，传统饲料多枝栓柳为７．８％，紫花苜蓿１．１８％，沙打旺１．２４％，玉米秸０．８２％，小麦秸１．０５％．栽培沙生饲用灌木是沙区发展畜牧业的一条有利途径。 相似文献
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山西省饲用型灌木树种及发展建议 总被引：2，自引：0，他引：2
介绍了山西省5个典型饲用灌木树种--华北驼绒藜、丽豆、四翅滨藜、柠条、胡枝子的生物学特性,分析了其营养成分,并在简要论述省内饲用灌木发展现状及存在问题的基础上,提出了一些开发利用饲用灌木的措施. 相似文献
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在调查鉴定内蒙古贺兰山国家级自然保护区内的植物标本的基础上,结合查阅有关研究饲用植物资源文献,统计分析了保护区的野生饲用植物资源,结果表明,保护区内分布的野生饲用植物共有370种(含种以下单位),隶属57科188属。其中草本植物占绝对优势,共计302种,占保护区内饲用植物总种数的81.62%;从水分生态型分析,中生植物最多,有199种,占保护区内饲用植物总种数的53.79%。从饲用价值上看优等37种、良等101种、中等121种、低等91种、劣等20种,分别占保护区内饲用植物总种数的10%、27.30%、32.70%、24.59%和5.41%。良等以上饲用植物占该保护区野生饲用植物总种数的37.30%,可以看出该保护区饲用植物价值高,具有很高的开发利用潜力。本文还对该保护区野生饲用植物资源的保护及开发利用提出建议。 相似文献
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文章就库都尔林业局饲用植物资源现状进行了调查 ,对主要饲用植物的生境、价值进行简要叙述 ,阐述了开发利用前景 相似文献
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Pablo Garrido Sara Lindqvist Petter Kjellander 《Scandinavian Journal of Forest Research》2014,29(3):234-242
In southern Sweden, maintaining high cervid densities through supplemental feeding has become a common management practice. We aim at investigating deer browsing pressure on young Norway spruce in relation to distance from supplemental feeding sites. Because available forage is considered important in understanding browsing patterns, we modeled several factors affecting food availability, and their interaction effect with distance. We confirmed earlier studies about a locally high browsing pressure on natural vegetation adjacent to supplemental feeding sites where browsing pressure declined with distance and alternative forage abundance. Novel is that browsing on spruce occurred in 27.6% of the investigated plots. The browsing pressure of those plots averaged 9%. Distance was the most important factor in relation to browsing. The interactive effect of occurring field layer (FL), and deciduous trees was also highlighted as these significantly affected the relationship between browsing pressure on spruce and distance. In the studied conditions, browsing pressure ceased at ca. 205 m, whereas in scenarios of an abundant FL, browsing levels were negligible already at 0 m from supplemental feeding sites. We suspect that most of the browsing was caused by fallow deer in our study area. 相似文献
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豆科树种目前已广泛应用于荒山绿化、饲用及观赏。文中从扦插(嫩枝扦插、硬枝扦插、根插)，组织培养等方面综述了豆科树种无性快速繁殖技术的研究和进展。指出目前豆科树种嫩枝扦插技术研究还局限在对某一树种繁殖途径的探索阶段；硬枝扦插技术研究较为系统和深入，对不同树种扦插生根的影响因素有了比较深入的了解，并因此建立起较为成熟的技术体系；根插方法简单，成活率高，但是研究普遍较少；豆科树种组织培养虽较为困难，但某些树种也已经建立起了较为完善的再生体系。此外，还对豆科树种快速繁殖的生理基础研究进行了讨论，建议加大对豆科树种快速繁殖技术和生理机制的研究力度，为解决优良种质资源快速扩繁奠定基础。 相似文献
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Forage production of woody fodder species and herbaceous vegetation in a silvopastoral system in northern Greece 总被引：5，自引：0，他引：5
Introduction of woody plants in silvopastoral systems could be an appropriate land-use for the poor sandy soils of the Mediterranean
semiarid zone. Forage production of four woody fodder species and herbaceous vegetation in relation to plant spacing and animal
(sheep) grazing was studied in a silvopastoral system on such a site in Macedonia, northern Greece. The woody fodder species
tested were Robinia pseudoacacia L., Gleditsia triacanthos L., Amorpha fruticosa L. and Morus alba L. They were planted at
the spacings 1.5 × 1.5 m,2.5 × 2.5 m and 3.5 × 3.5 m and kept in a shrubby form by topping. They were grazed by sheep (stocking
rate of 1.1 sheep/ha/year) in early July and late August of 1992, 1993 and 1994. Among the species Robinia yielded the highest
forage production (394 kg/ha). The spacing 1.5 × 1.5 m had the highest (P ≥ 0.05) forage production per area unit (280 kg/ha)
while the spacing 3.5 × 3.5 m had the highest forage production per plant (91.8 g/plant). No competition was observed between
the woody and the herbaceous plants in the various spacings probably due to topping of the woody species every winter. Percent
utilisation of the native herbage dropped as forage of the woody species increased.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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More than 20% of Kenya’s population lives on rangelands, which account for over 80% of the total landmass and support more
than 50% of the national livestock herd. As these areas have experienced a major livestock (cattle) productivity decline due
to encroachment on pastures by woody weeds, government efforts are targeted at increasing palatable grass cover. Paradoxically,
these efforts have been less than successful, as some communities do not identify some weeds as a nuisance, in fact ascribing
value to them. To identify specifically what such values are, as well as perceived problems with woody weeds, interviews were
conducted with 165 respondents in two distinct ethnic groups (Maasai and Kamba) practising different production systems within
the Kenyan rangelands. We found that the groups had complex attitudes toward “woody weeds”, seeing both negative and positive
aspects to them. Both groups thought predominately that woody weeds lowered grass quantity and quality. Both communities appreciated
some weeds as forage for livestock and sources of firewood, while variations existed between the two communities in their
use of woody weeds for construction, bee forage and soil conservation. It is concluded that woody plants on these rangelands
cannot be exclusively be classified as weeds, but rather need to be included in systems of rangeland management. 相似文献
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《Scandinavian Journal of Forest Research》2012,27(1-4):550-559
Many experiments have tested the hypothesis that stress‐induced changes in plant quality enhance insect performance. Data available for insects feeding on woody plants indicate that phloem‐feeding insects’ response is stronger (i.e. enhanced performance) than that of chewing leaf‐feeding insects. However, with the exception of one study, performance data for these two insect groups emanate from separate experiments. Here we report on the performance of a phloem‐feeding aphid (Cinara costata) and larvae of a folivorous sawfly (Gilpinia hercyniae) feeding on drought‐stressed mature Norway spruce (Picea abies). Sawfly larvae did not survive or grow any better on drought stressed trees than on control trees. Surprisingly, there was no significant difference in the build‐up of aphid densities between trees of the two treatments, in contrast to most other stress experiments. Our experiment involved mature trees, while most other studies have used seedlings. It is possible that there are fundamental differences between seedlings and mature trees in their response to environmental stress. Possible mechanisms for such differences are discussed. 相似文献
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JIANG Jin-zhong SUN Peng LI Yun ZHANG Guo-jun LIU Jian-hua HAN Feng-bao NIU Chen College of Biological Sciences Biotechnology Beijing Forestry University Key Laboratory of Genetics Breeding of Forest Trees Ornamental Plants of Ministry of Education Beijing P. R. China 《中国林学(英文版)》2009,(3)
Tetraploid black locust (Robinia pseudoacacia) is a woody plant with larger leaves and richer nutritional content than normal diploid black locust, with greater biomass and wider adaptability than herbaceous plant forage. However, currently no stockbreeders have adopted it as a major forage in China and other countries for a lack of information on the evaluation of nutritional ingredients of leaves and stems of young tetraploid black locust (YTBL) by in situ digesting tests. The objectives of this study wer... 相似文献
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P. Barnes 《Agroforestry Systems》1998,42(1):25-32
There is keen interest in feeding small ruminants with herbage from forage shrubs and trees in Ghana because of the general
perception about these plants being perennial and remaining green for lengthy periods. In this study, plant growth rate, herbage
production and quality of two indigenous woody plants, Griffonia simplicifolia and Baphia nitida were compared to those of
two introduced shrubs, Leucaena leucocephala and Gliricidia sepium. Gliricidia sepium achieved the greatest height and produced
the highest herbage dry matter (2t/ha) compared to average production of 0.15 t/ha by the three other species. Gliricidia
sepium herbage also had high contents of crude protein, calcium and ash. In regrowth herbage production at cutting intervals
of 6 and 12 weeks, Gliricidia sepium again outperformed the three other species, however, there was little difference in herbage
yield among the three other species. In all species one harvest at 12 weeks regrowth interval produced more herbage than the
combination of yield of two six week interval harvests.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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