Water Saving Irrigation 1981 Issue 4 mei guo bu tong guan gai fang shi de neng liang xiao hao

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Water Saving Irrigation
1007-4929
1981 Issue 4

mei guo bu tong guan gai fang shi de neng liang xiao hao
han bing ;

..............page:68

ji guang ji shu kai shi yong yu guan gai
han bing ;

..............page:69

he nan sheng zuo shi xian qian mu di guan shi dian di guan xi tong de gui hua she ji ji an zhuang
fu lin ; liu yun fa ;

..............page:10-17

zhong hua ren min gong he guo nong ye ji xie bu bu biao zhun py xi lie dan ju yao bi shi pen tou ji shu tiao jian

..............page:2-4

pai guan ji xie jie sheng neng yuan de qian li hen da
chen da diao ;

..............page:70

quan guo pen guan shi zi nan fang xun lian ban zai wu han ju ban
yang ying jiu ;

..............page:75

quan guo qing xiao xing pen gai ji ju ping bi jie xiao
yang ying jiu ;

..............page:75

pbg70 du xin bao bi gang guan ji guan lu xi tong she ji he shi yan yan jiu
lin dun ;

..............page:27-31

wu han shi zhan jia zuo zi dong hua pen guan xi tong
xiao xian wu ;

..............page:36-39

pen she mo duan yu di de jian hua yun dong mo shi ji jin si jie
zhao jing cheng ;

..............page:18-26

py_s20a pen tou shi ying xing de ce shi yan jiu
zhang cheng bao ;

..............page:40-46

nong ken bu ju ban da xing pen guan ji ji shu xue xi he zuo tan hui
xie li gui ;

..............page:61

hei mu er pen guan de xiao guo ji gui hua she ji de ruo gan wen ti
sun wan di ; ren guo min ;

..............page:32-36

mei guo yi jiu ba nian guan gai zong mian ji he pen guan mian ji
yu li yang ;

..............page:53

zh80/50 gei shui shuan tong guo ji shu jian ding

..............page:69

mei guo yu niao pen tou po xi
yu kai de ; li ying neng ;

..............page:46-53

quan guo pen guan ke ji qing bao wang ji shu jing yan jiao liu hui zai zhe jiang huang yan zhao kai
yang ying jiu ;

..............page:74

zhong guo shui li xue hui nong tian shui li zhuan ye wei yuan hui cheng li ji guan gai pai shui ji shu tao lun hui guan yu pen guan ji shu di guan ji shu de jian yi zong he jian bao zhai lu

..............page:1

pen guan ji shu 1981 nian zong mu lu

..............page:77-80

an jing ji gui lv ban shi jiang qiu shi xiao wen bu jian kang di fa zhan pen guan jian she
cai zhen zuo ;

..............page:65-67

mei guo guan gai xie hui
han bing ;

..............page:31

si chuan jian ding lbsp 40 xing liu kong bu jin shi she liu pen tou
zuo shi jun ;

..............page:69

pen guan ji shu tong xun yuan dai biao hui yi ji yao

..............page:5

ao da li ya fa zhan pen di guan de yi xie qing kuang

..............page:68

zi xi zhen kong jing ren gong yi dong guan dao pen guan
yang cheng zhong ;

..............page:62-64

dui shi zhen shi pen guan ji de liang zhong yi jian
han bing ;

..............page:70

quan guo qing xiao xing pen guan ji ju ping bi jie guo

..............page:71-74

fa zhan pen guan yu neng yuan xiao hao de guan xi shang hai shi jiao shu cai qu diao cha
lu ai cheng ;

..............page:6-9+26

fu jian sheng zai xia men ju ban pen guan ji shu pei xun ban
chen wen zhen ;

..............page:64

zheng jiao shi yan fa zai pen guan tian jian shi yan zhong de ying yong ( shang )
zuo zhi ;

..............page:54-61