Journal of Agricultural University of Hebei 2009 Issue 6 Analysis of the relation between food production and population carrying capacity in the agro-pastoral ecotone of North China

Analysis of the relation between food production and population carrying capacity in the agro-pastoral ecotone of North China
du xiong ; chai qing ; sun xiao nuo ; sun jian ; zhang yong sheng ; zhang li feng

..............page:1-7

Histological study on maize infected with rice black-streaked dwarf fijivirus
ren ping ; chen dan ; cao ke qiang ; lu yin gui ; miao hong qin

..............page:89-91,100

ying wen qi kan frontiers of agriculture in china zheng gao qi shi

..............page:封3

Effects of shade treatments on net photosynthetic characteristics and chlorophyll fluorescence parameters of Cercis canadensis\'Forest Pansy\'
zhang yi ; zhuo li huan ; wang cheng zhong

..............page:52-56

Comparison of microspore development between cytoplasmic male sterile line and container line in cabbage
xie bin ; liu hai he ; guo shou peng ; liu hong xia

..............page:29-32

Determination of trace amouts of zinc in water samples by cloud point extraction-flame atomic absorption spectrometry
lei xia ; li wei ning ; zhao bin ; du xin ; li jing ci ; mu hai yan

..............page:117-120

Evaluation of ecological benefits from returning land for farming to forestry in Chengde City
yao qing liang ; lu gui qiao ; du jian ; tan xu quan

..............page:57-61

Regulation effects of nitrogen amounts on yield and growth of wheat under water-saving irrigation
ke xin ; zhao jin feng ; guo cheng zuo ; miao hong ying ; xu zhen long ; xiao kai

..............page:14-19

Effects of harvesting time on the storage quality of \'Okubao\' peach
li li mei ; feng yun xiao ; guan jun feng ; ji hua ; sun yu long

..............page:33-36,56

he bei nong ye da xue xue bao zheng gao jian ze

..............page:后插1

Study on the super critical CO_2 extraction of lycopene
yang wan zheng ; chang hua ; du xiao ming ; zhang ying qun

..............page:114-116,120

The sequence choice of the main tree species to Anoplophora glabripennis in northern part of China
wang zhi gang ; huang da zhuang ; yan jun jie

..............page:62-68

Preparation of heat-sensitive microcapsules containing leucocompound by emulsion polymerization
an pu ying ; lu shuang ; ba xin wu

..............page:121-124

Optimization of ultrasonic wave extraction conditions of active ingredient from three antimycotic medical plants
qiu lei ; zhang zi de ; zhao cong zhi ; ma jun lian

..............page:105-108,113

Optimization of fermentation culture medium of Streptomyces rimosus CN124 for Btryosphaeria dothidea
cui jian zhou ; niu xiao ke ; hou xiao jie ; ran long xian

..............page:85-88

Study of oxidative stress on injury in intestinal epithelial cell and antioxidation in vitro
chen qun ; yu wei ; yu xiu fang ; liu hai yan

..............page:101-104

Preliminary studies on the components and stability of flower pigments of Rhododehdron hybridum
li li ; xiao jian zhong ; li zhi bin ; liu dong yun ; shi bao sheng ; zhang xiao man

..............page:47-51

Effects of P deficiency on the plant growth and uptake of N,P and K in different maize cultivars at the seedling stage
peng zheng ping ; sun xu xia ; liu hui ling ; wang yan qun ; bai xiao song

..............page:8-13

Effects of spermidine on the contents of endogenous polyamines during floral induction period and flowering of autumn chrysanthemum \'Jinba\'
yang li ; yang ji shuang

..............page:41-46

Cold hardiness in dormant branches of different sweet cherry varieties
chen xin hua ; guo bao lin ; zhao jing ; yang jun xia

..............page:37-40

Morphological study on neurons in layer H of optic tectum in 3-d-old chicks
guo jie ; hu man ; zuo jia li ; li hui chao

..............page:97-100

Study on the activity of anti-tobacco mosaic virus of crude protein from Lepista sordida
ma feng jin ; yan ji zuo ; yan hong ; zhang li ye ; li xing hong

..............page:92-96

Effects of temperature on laboratory population of Propylea japonica (Thunberg)
chen jie ; qin qiu ju ; he yun zhuan

..............page:69-72,79

The agriculture information vertical search engine design based on Internet
zhao yang ; zuo gui fa ; zhang yu xin ; he dong mei

..............page:125-128

Extracting and purifying of lipopolysaccharide from soak water of maize by active carbon with ability of selective absorption
qu bao xue ; zhu li hong

..............page:109-113

Effect of water stress on leaf water potential and leaf holding water capacity in seedlings of the different tree species
shi sheng qing ; sun xiao guang ; wang ying ; yuan yu xin ; jiang ze ping

..............page:24-28

Biocontrol of eucalypt bacterial wilt by culturable endophytic bacteria from non-host plants of Ralstonia solanacearum
e hua ; hao liang zuo ; li zheng zuo ; ran long xian

..............page:80-84

The resource and spatio-temproal distribution of AM fungi from Salvia miltiorrhiza in Anguo
wang ling yun ; he xue li

..............page:73-79

Study on reducing welding stress and distortion of thin plate welding with trailing peening
li jian jun ; fan yun fei ; zhang wei ; zhao jian guo

..............page:129-131

Effects of twilight on anthesis and leaf physiological parameter of adzuki bean
wang yan feng ; zhang yue chen ; jiang xue mei ; zhao cui zuo ; guo li guo

..............page:20-23,32