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  • 1984 Volume 4 Issue 3
    Published: 30 July 1984
      
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  • A DEEPER REALTZATION OF MULBERRY DIKE-FISH POND SYSTEM
    Zhong Gongfu
    1984, 4(3): 129-135.
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    The mulberry dike-fish pond system in the Zhujiang Delta has the following characteristics: integration, continuation and stability.Eexcreta of silkworm is the medium between sericulture and aquatis production, making a artifical ecosystem of land-water interaction.Hence, the structure of the system becomes more complete, the production make varied, and the benefit increases.Dyke and Bond integrates each other, being the core of the system.They have a certain proportion in production.There are still potentialities the dike-pond system, the more fully used, and the more intensi-fied the outcome.
  • SOME PROBLEMS OF MULBERRY DIKE-FISH POND SYSTEM IN THE ZIIUJIANG DELTA
    Deng Yuyou, Luo Guofeng
    1984, 4(3): 136-144.
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    The mulberry dike-fish pond system in the Zhujiang Delta is not entirely on scientific basis.There exist some deficiency and inadenuacy in its cycling production and land utilization.For higher economic and ecological benefits,is suggested that silkworm excrements and pupae be made multiple and comprehensive use of, bivoltine rather than multivoltine silkworm be recommended, distribution of mulberry-production he readjusted,and agriculture, manufacture and commerce be closely combined.
  • BIODEGRADATION OF MUD AND NITROGENFIXATION OF THE DIKE-POND SYSTEMS工N ZHUJI ANG DELTA
    Wang Zengqi, Luo qilion, Zhu Huiming
    1984, 4(3): 145-149.
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    The mulberry dike-fish pond ecosystetm in the Zhujian(Pearl River)Delta needs 78 T, of feed to be put into 1 ha of pond per year in order obtain 9.1 T. ha-1 of fish cutput, The nitrosen loss of pond mud attains 0.27 T. ha-1 per year, The nitrogen-fixing algae and haateria is deprived of nitrogea-fixation activity.
  • PRIMARY ANALYSIS OF DATA FROM THE RUNOFF TANKS TN SMALL CATCHMENT BASINS IN XIAOLIANG CONSERVATION STATION
    Yao Qingyin, Zheng Liangwen, Huang Shaohui
    1984, 4(3): 150-157.
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    The experimental area Xiao-liang conservation station,Guangdong province, is situated at an undulating granite platform near the north margin of the tropical region deeply weathered over its thick crust. Serious siol loss results from vegetation destruction. Data from 3 runoff tanks respectively in the minced forest, eucalyptus forest, and the bare land are compared, On the bare land, soil loss is the most seriousj while on the mixed forest the least, resulting in a fine ecological environment.
  • ON DEVELOPMENT OF PASTURELAND IN QIONG-CHONG COUNTY
    Yang Zhaofa
    1984, 4(3): 158-163.
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    Qiong-thong county is located in the heart-land of the Wu-zhishan mountain, Hainan Island, Its total land area amounts to about 4.55 million mu with pastureland 1.38 million mu, or 30.5% of the total, Climate, water and soil are favourable, A comprehensive investigation of the resources including land division was performed from 1980-1981 in the whole county.The location and value of pastureland, vegetation form, soil texture, water source, river density, slope of pastureland, feeding value of grass, best grazing season are evaluated one after another.
  • RESOURCES OF TROPICOPOLITAN MEDICINAL CROPS NEAR THE WANQUANHE RIVER
    Lee Xiangying
    1984, 4(3): 164-166.
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    Resources of tropicopolitan medicinal crops in the Wanquanhe River basin are recounted by the author, who had taken part in the field works around the hilly area between Tuanling Mountain and Liwushan Mountain.This region abounds with tropicopolitan medicinal crops, including the beleluntpalm(Areca cathecu L.),medicinal indianmulberry(Morinda of ficinalis, How.),sharpleaf galangal(Alpiraia oxyphylla, Mig.),cock-leburlike amomum(Amomurm xarnthioides, Wall).
  • TO ESTABLISH A COMPREHENSIVE ECO-ECONOMIC SYSTEM IN XISHUANGBANNA
    Guo Ruixiang, Liang Duojun
    1984, 4(3): 167-176.
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    The Xishuangbanna District, Yunnan, is situated on the border of southwest China.Of its total area of 19,223 Km2, 95% are mountainous. This District, lying in the south of the Tropic of Cancer, abounds in natural resources, The largest area of tropical forests in our country is in Xishuangbanna.For over 30 years, the tropical forests have been seriously destroyed, the ecological environment has been getting worse day by dad.The key to protect the environment of Xishuangbanna lies in the restoration of forests, It is necessary to expand the forests area to a covering rate of over 50%,which is approximate to that in the time not long after liberation, upon this basis, natural rubber, precious timbers, traditional medicine crops, spiceberries, woody oil plants, fruits, flowers may also be developed.
  • INDUSTRY OF FOREIGN TRADE AND INDUSTRIAL NETWORK SYSTEM IN GUA NGZHOL
    Wu Yongming
    1984, 4(3): 177-182.
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    According to foreign experience, development requirements for and specific economic geographical conditions of Guangzhou,the author suggested that industries of foreign trade should be developed mainly, a multiple industrial network system should be established in Guangzhou.Meanwhile, it is weak for the industrial network basis of the Guangzhou economic centre, and its internal and hinterland network systems have not completed, therefore, the further consolidator of the above networks is also the key to bring the effect of the economi centre Pntrc of Guangzhou into full play.