吉林西部四翅滨藜引种初报   总被引：1，自引：0，他引：1  

赵晓明  权文富 《吉林林业科技》2005,34(5):10-12,25

从美国引进抗寒的干枝型滨藜种子，并进行育苗、造林试验，结果表明，引进种源可以在试验地区正常越冬，在沙地和中、轻盐碱地长势良好，但在较重盐碱地保存率较低，在季节性积水地无法生存。  相似文献   

山西北部四翅滨藜生态饲料林及几点建议   总被引：4，自引：1，他引：3  

刘劲 《山西林业科技》2006,(1):10-12

通过对四翅滨藜营养价值、适口性、生物量等调查研究,认为四翅滨藜是一种优良生态饲料林灌木树种。针对山西省北部自然条件及四翅滨藜引种现状,对其发展四翅滨藜生态饲料林提出了建议。  相似文献   

7种滨藜的解剖结构及C4光合特征   总被引：1，自引：0，他引：1  

王玉魁闫艳霞  慈龙骏王保平崔令军  杨超伟 《林业科学》2007,43(A01):72-76

对从北美洲引进的7种滨藜3年生叶片的解剖结构观察、δ^13 C值测定及光合特征分析表明：7种滨藜均具有花环结构，其叶肉细胞呈栅栏状，与维管束鞘细胞相连；在干旱沙漠环境（甘肃民勤）和相对湿润条件下（河南原阳）生长，δ^13 C值均在-13‰～-16‰之间；植物生长季节，7种滨藜的光饱和点为1603～2185μmol·m^-2 s^-1，表观量子效率0．0495～0．0718 mol CO2·mol^-1 photons。证明引进的7种滨藜均为C4植物，其光合作用途径没有随地理位置的变化而改变。  相似文献   

四翅滨藜在黄土丘陵区的覆膜造林试验     

郝向春 《山西林业科技》2006,(1):4-6

通过对优良生态经济型灌木树种四翅滨藜的覆膜造林试验,分析了覆膜对地温与四翅滨藜生长量影响的变化规律,得出了在黄土丘陵区发展四翅滨藜最好采用覆膜造林技术的结论。并对大力发展四翅滨藜提出了合理化建议。  相似文献   

白滨藜生物学特性及饲用价值的初步调查与试验研究     

库尔班·尼扎米丁  古丽加克热·买合苏提 《现代农业科技》2009,(9):236-237

对野生白滨藜进一步调查和进行人工种植试验，以更进一步地了解、挽救和充分利用白滨藜资源。调查结果表明：白滨藜是各类家畜晚秋及冬季所喜食的优良饲用植物，它具有抗旱、抗寒、耐盐、耐牧等优良特性。在我国西北地区开发利用前景广阔。人工种植试验结果表明：白滨藜旱作条件下最佳播种期为临冬（11月），种子出苗率达53．6％；其次为早春（3月下旬），种子出苗率达34．6％；其他时间播种均难以出苗，出苗率仅2．7％。  相似文献   

Utilization of Fodder Trees and Shrubs in the Arid and Semiarid Zones of West Asia and North Africa     

Henry N. Le Houerou 《Arid Land Research and Management》2013,27(2):101-135

Utilization of fodder trees and shrubs (FTS) in the Mediterranean arid and semi-arid zones was initiated after World War I and expanded between 1950 and 1970. A similarly slow expansion has taken place in other arid zones in the USA, South Africa, South America, and Australia. Currently in West Asian and North African (WANA) countries, the area planted with native or exotic species is about 10 6 ha. Mainly they include three categories of plant species: cacti, saltbushes, and wattles. At this time there is an expansion of hectareage and a diversi-cation of genetic material. The relative success of FTS has a number of reasons. They are tolerant to drought and have the ability to accumulate green fodder over several seasons, providing fodder reserves for times of dearth and thus permitting a switch from transhumance to sedentary husbandry. Deep rooting enables them to reach water resources unavailable to herbaceous species. Their Rain Use Efficiency (RUE) and Water Use Efficiency (WUE) rates provide productivities three to five times higher than rangelands. FTS have a positive impact on soil fertility due to their organic matter production, hence they increase microbial activity, rates of geobiogenic element cycling, and soil structure stabilization. Their above ground biomass, canopy ground cover, provides a microclimatic buffer role for wind, temperature and evapotranspiration, and their landscape roughness factor makes them efficient for erosion and desertification control. Other positive aspects include: the use on non farming land; general suitability for runo farming systems; production of valuable goods, such as food, shade, and firewood; providing wildlife shelter; and other benefits. FTS plantations are subjected, however, to constraints that limit their expansion. Their main shortcomings include the cost of establishment, often not affordable by a small farmer; required long-term planning may not be feasible, as a secure land tenure system often is nonexistent. Appropriate methods of cultivation are not being applied, management, and utilization are lacking, and availability of plant material is limited. Discipline of utilization, allowing regeneration of stands after defoliation is a problem. Identification of constraints indicates needs for research and extension activities. These include reduced-cost of establishment and improved management methods, such as ensuring availability of low-cost seeds and selection of high grade cultivars, and introduction of new high quality exotic species. Additionally, integration into economically feasible and socially acceptable production systems, including joint cultivation with cereal farming and combination with runo farming techniques, should be developed. Legal, regulatory, and administrative incentives are also needed.  相似文献   

Land restoration by fodder shrubs in a semi-arid agro-pastoral area of Morocco. Effects on soils     

Claudio Zucca  Francesca Julitta  Franco Previtali 《CATENA》2011

The present study assesses the effects of Atriplex nummularia Lindl. growth on soil chemical properties in a semi-arid area. The area is located in the Marrakech province (Morocco), in a degraded agropastoral region subjected to soil restoration actions based on fodder shrub plantations.  相似文献   

不同地理种源四翅滨藜引种栽培试验研究     

王海鹰  杨涛  贾艳梅  王艳玲 《陕西林业科技》2011,(1):8-10,17

从青海西宁市郊、宁夏盐池青山乡两地引进四翅滨藜,在榆林进行引种观察试验。结果表明：在相同的立地条件下,苗木的成活率、保存率差异不大,都表现出较强的适应性,但不同种源的株高、地径、冠幅等生物量均表现出差异性。随着生长年限的增加,宁夏引进的四翅滨藜生物量明显优于青海的引进种,其更适宜在榆林沙区生存和发展。  相似文献   

转AhCMO基因玉米后代的获得及耐盐性鉴定   总被引：3，自引：0，他引：3  

任小燕  杜建中  孙毅 《分子植物育种》2013,(3):332-338

试验采用超声波辅助花粉介导法将山菠菜胆碱单加氧酶(AhCMO)基因转入玉米自交系‘郑58’中,经抗生素筛选、PCR检测及自花授粉获得转CMO基因的T2代玉米种子。选取5份T2代玉米种子盆栽进行耐盐性鉴定试验。首先针对其非转基因受体材料筛选出耐盐性鉴定浓度,其后通过生理生化指标对转基因T3代株系进行耐盐性鉴定,同时筛选耐盐性强的株系。结果表明:耐盐性筛选及鉴定的适宜浓度为250mmol/L;依据对苗期生理生化指标的测定分析,在250mmol/LNaCl胁迫下,转基因玉米植株的超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性及叶绿素含量高于非转基因玉米,丙二醛(MDA)含量低于非转基因玉米。SOD活性提高了2%~208%;POD活性提高了22%~65%;叶绿素含量增加了8%~61%;MDA含量减少了3%~93%。试验表明,耐盐基因CMO的转化提高了玉米的耐盐性。依据生理生化指标变化情况建立的耐盐性级别评价方法显示,5份参试株系中耐盐性比对照提高3级的有2份。  相似文献   

新疆滨藜属植物叶表皮微形态学及叶的比较解剖学研究   总被引：12，自引：2，他引：12  

周桂玲  迪利夏提 《干旱区研究》1995,12(3):34-37

本研究采用了石蜡切片法，电子显微镜扫描的方法，对新疆分布的滨藜属１２种及２变种植物进行了研究，观察到滨藜属植物叶的结构可分为三种类型：全栅型、双栅型、单栅型。叶表皮附属物表皮毛、角质层都非常多。表皮毛－光状毛，在幼叶及茎顶泡状毛为生活状态，在成熟的叶上泡状毛破裂、死亡，覆盖在叶的表面；角质层在叶的上、下表皮细胞表面分布，可分为皱纹状角质层和脊状角质层。以上特点都是滨藜属植物叶对干旱的环境条件的适应  相似文献