Study on Clonal Growth Pattern of Sabina vulgaris in Mu Us Sandland     

Zhang Guosheng  * Liu Haidong Liu Meizhen Wang Linhe Zhu Jinzhao Jirigele Inner Mongolia Agricultural University  Huhhot  P. R. China Beijing Forestry University  Beijing  P. R. China Institute of Botany  Chinese Academy of Science  Beijing  P. R. China Foresty Bureau of Wushen Banner  Dabuchake Ordos  P. R. China 《中国林学(英文版)》2003,5(2):10-16

1 Introducation Clonal plant is a type of plant accompanying by asexual reproduction in their vegetative growth process under natural conditions (Dong 1996a). Clonal growth enables clonal plants to increase the numbers of their morphological and physiological individuals (ramets). As a result, their genetical individuals (genets) are able to occupy a large area (Dong 1996a, Zhang et al. 2000, Chen et al. 1997, Dong et al. 1999, Dong 1996b). Many studies indicated that the indispensable re…  相似文献   

Current Status and Advancements in Research of Plantation Nutrient Cycling     

LI Kun ZHANG Changshun  SUNYongyu* .Research Institute of Resources Insects  Chinese Academyof Forestry  Kunming  P. R. China . InternationalCentre ofBambooand Rattan  Beijing  P. R. China 《中国林业科技(英文版)》2006,5(2):66-74

Nutrient cycling refers to the complicated process of cycling, transferring, changing of mineral and chemical elements in the eco-system, which is one of the most fundamental functions of eco-system. Some of the nutrients mainly circulate among organisms and atmosphere; others mainly circulate among organisms and soil, or among organisms, atmosphere and soil. In short, there are three types of circulations of nutrient cycling in ecosystem: geochemical cycles, biogeochemical cycles and bio- che…  相似文献   

Multiplication of Elaeagnus angustifolia L. from a Single Shoot in Vitro     

LI Yanju * YANG Zhengli SHIGERU Hisajima Institute of Agricultural Resource  Division Planning  Chinese Academy of Agricultural SciencesZhongguancun South St.  No  Beijing  P.R.China Institute of Applied Biochemistry  University of Tsukuba  Ibaraki Japan 《中国林业科技(英文版)》2004,3(1):93-98

1INTRODUCTIONElaeagnusangusifoliaLisahighlytolerantnativewoodyspeciesinsouthernEuropeandAsia.Itmaybeusedinreforestationandsoil-waterconservationandforanexcellentwindbreaktoarrestwind(Bertrand,1985;LiShaozhong,etal,1997),materialsoffragranceandmedicineandnutritivefood(ChangZhaofeng,etal,1994;Goncharova,1997;Rasekh,1999;Ahmadiani2001;JiangFashou,etal,2002).Insomepreviousresearches,BA,2ip,KN(Bertrand,1985,Economou,1988)andBA(Iriondo1995;Mariella,1996)wereusedinshootmultiplicationofE…  相似文献   

A Commodity Chain Analysis on Commercial Timber Profits in Southern Collective Forest Region in China     

WANG Chunfeng* Afforestation Department  State Forestry Administration  No.  He Ping Li Dong Jie  Eastern District  Beijing  P. R.China 《中国林业科技(英文版)》2007,6(1):25-41

This article analyzes the factors shaping commercial timber profit distribution in China＇s Southern Collective Forest Region （hereinafter SCFR）. The article first describes the setting and distribution of a national harvest quota and analyzes its equity impacts on farmer households. Based on access mapping of the commercial timber commodity chain, profit distribution and mechanisms for controlling and maintaining access to profit are analyzed for different actors along the chain. The data show that farmers do not benefit to a great extent from the commerce, even if they are endowed with rights to manage and harvest forests and freely sell commercial timber in the region. There are a number of institutional and non-institutional factors that determine the extent of benefits farmers and other actors along the timber commodity chain can seek. Under current arrangements, the devolution of forest property in the SCFR does not ensure that farmer households benefit from commercial timber marketing. In order to stimulate farmers＇ enthusiasm for forest rehabilitation and management, beyond the devolution of forest property, it is firstly necessary to take effective measures to improve farmer access to commercial timber profits.  相似文献   

黄瓜种质资源苗期耐低温性评价     

周双  秦智伟  周秀艳 《中国蔬菜》2015,1(10):22-26

以43份不同类型的黄瓜品种(品系)为试验材料,在黄瓜苗期进行低温处理(昼/夜温度为12℃/9℃),以冷害指数作为鉴定指标对其耐低温性进行评价。最终鉴定出7份耐低温材料、10份低温敏感型材料。对黄瓜低温处理后的冷害指数(Y)与叶绿素降低率(X1)、可溶性蛋白增高率(X2)、MDA增高率(X3)、脯氨酸增高率(X4)、POD增高率(X5)进行相关性分析,并建立了鉴定黄瓜耐低温性的回归方程:Y=0.433+0.671X1+0.005X2+0.121X3-0.733X4+0.248X5。  相似文献   

低氮胁迫下黄瓜根系相关指标的变化     

徐静静  秦智伟  于明磊  武涛 《中国蔬菜》2011,1(14):47-51

以耐低氮性强的黄瓜品种D0328和耐低氮性弱的黄瓜品种东农806为试材,进行两种水平的施氮处理,对植株发育过程中根系的各项指标进行对比分析.结果表明;低氮胁迫条件下,盛果期之前两个黄瓜品种根体积、根干质量和根系活力升高,盛果期之后降低;根系伤流量在结果初期之前上升,而后下降;冠根比在整个生育期中一直呈上升的趋势.两个黄...  相似文献   

Optimization of a Sequence-Related Amplified Polymorphism (SRAP) Amplification System for Lentinula edodes     

FU Li-zhong    WEI Hai-long    LI Hai-bo    WU Qing-qi    WU Da-feng  WU Xue-qian  * Biotechnology Research Institute  Zhejiang Academy of Forestry Science  Hangzhou  China  Lishui Edible Fungi Research  Development Center  Zhejiang Essence Fungi Development Co.  Ltd  Lishui  Zhejiang  China 《食用菌学报》2006,(4)

Lentinula edodesis a large,edible wood-decaying fungus that is attractive to consumersdue to its delicious taste and medicinalproperties.One of the major cultivatedmushrooms,it is ranked second(marginallybehindAgaricus bisporus)in terms of worldproduction.L.edodeswas originally cultivatedinChina,whichis nowthelargest producer of themushroom and rich in germplas m resources.These resources form the basis ofL.edodesbreeding programs and product exploitation.However,research on the genetic rela…  相似文献   

Study on flaking of wet corn by heating     

WANG Mingming  and WANG Defu* Engineering College  Northeast Agricultural University  Harbin  China 《东北农业大学学报(英文版)》2007,14(4):340-344

Flaking on high-moisture corn(wet corn)by hot-air heating was studied in the paper.The wet-heating approach was beneficial to improve corn gelatinization by experimental results.By the experiments,a set of optimal parameters was obtained:hot- air temperature 120-130℃,heating duration 70 min,gap between rollers 0.5-1.0 mm,150-200 r?min-1 for rotational speed of rollers.  相似文献   

架子牛始重和购进价格对育肥效益的影响     

曹琼  张亚一  李雪娇  王消消  陈静  赵德兵  莫放* 《养殖与饲料．饲料世界》2013,(5):16-20

架子牛育肥是目前我国肉牛生产的主要形式,为了为架子牛育肥提供参考依据,本文分析了架子牛育肥的不同牛源购进价格和不同初始体重的育肥生产经济效益。结果表明,架子牛的初始体重明显影响育肥的效益,购进小体重架子牛进行育肥的每天的总收入低,但牛源成本也低;架子牛价格的上涨使肉牛育肥收入明显增加。  相似文献   

少刺型黄瓜新品种东农807     

周秀艳  秦智伟  张艳菊  王桂玲  武涛 《中国蔬菜》2010,1(23):29-29

东农807 是利用优势育种法选育的黄瓜一代杂
种。2004 年夏季以D0401 为母本与D0327- 4 等一系
列日本少刺类型自交系配制杂交组合，2005～2006
年进行品种比较试验，2007 年参加黑龙江省黄瓜区
域试验，2008 年继续参加区域试验的同时，参加黑龙
江省生产试验。2008 年获准黑龙江省农作物品种鉴
定委员会登记，定名为东农807。目前在华北和东北
地区累计推广面积达33.3 hm2。  相似文献