Table of Content

10 August 2002, Volume 23 Issue 04

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论文

Climate Resources and Agricultural Production in the Region Ngari in Tibet

QIN Xiang yang 1, CHEN Fu 1, WANG Ai ling 2 (1 Chinese Agricultural University, Beijing 100094; 2 Beijing Academy of Agricultural and Forestry Sciences)

2002, 23(04):  . 

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The characteristics and distributing of the climate resources, such as light, temperature, water, and their relations to agricultural production in the region Ngari in Tibet were described The direction of agricultural production based on the climate characteristics was proposed

Occurrence Pattern of Frost and its Response Measures in Xiangzhou County, Guangxi Autonomous Region

LUO Yan bin (Meteorological Bureau of Xiangzhou County, Guangxi, Xiangzhou 545800)

2002, 23(04):  . 

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The occurrence pattern of frost was studied by analysis of frost days in winter during 1956 2001 in Xiangzhou county, Guangxi Autonomous Region The results showed that the frost had a close connection with the circulation form, meteorological elements and topography The practical measures to adjust structure of agricultural production against frost were recommended

Study on Northern Boundary of Winter Wheat in Liaoning Province

HAO Zhi xin 1, ZHENG Jing yun 1, TAO Xiang xin 2 (1 Institute of Geographic Sciences and Natural Resources Research, CAS , Beijing 100101; 2 Shenyang Agricultural University)

2002, 23(04):  . 

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Based on geographic planting data of winter wheat during 1991～1999 and meteorological data, the climatic northern boundary of winter wheat in Liaoning province was studied systematically The accumulated temperature before overwintering was the key climate factor influenced the cropping of winter wheat by the analysis of grey correlation The northern boundary of winter wheat in Liaoning province in the rate of 80% climatic guarantee was obtained by analysis of the accumulated temperature before overwintering The results were verified by using the indices of the negative ground temperature

Analysis of Relationship Between Crop Photosynthesis Rate and Eco-physiological Factors in the Crop-tree Intercropping Systems

ZHANG Ji xiang, LIU Ke chang, REN Zhong xing, WEI Qin ping (Shandong Agricultural University, Tai'an 271018)

2002, 23(04):  . 

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Based on the field data, the grey relating coefficient and relating degree between the wheat leaf photosynthesis rate and main eco physiological factors were analyzed with grey system theory in the different cropping patterns of jujube wheat intercropping for the areas shaded and not shaded The primary and secondary relationships between wheat photosynthesis rate and main eco physiological factors were clarified

A Review of Studies on Mechanism of Greenhouse Gas (GHG) Emission and its Affecting factors in Arable Soils

XIE Jun fei, LI Yu'e (Institute of Agro meteorology, Chinese Academy of Agricultural Sciences, Beijing 100081)

2002, 23(04):  . 

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Based on literatures in recent years, the mechanisms of greenhouse gas (GHG) emission and its affecting factors on soil carbon dioxide, methane and nitrous oxide were reviewed The effects of animal waste application to change of the GHG were introduced The relevant simulation equations to affecting factors of soil GHG were discussed

Impact and Adaptation to Climate Change on Drought and Waterlog in Huaihe Region

MA Xiao qun, ZHANG Ai min, CHENG Xiao yi (Anhui Meteorological Institute, Hefei 230031)

2002, 23(04):  . 

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Based on recorded data of the crop yields and the occurrence of drought and waterlog disasters, the changes in the occurrence of drought and waterlog disasters and in the distribution of precipitation were analyzed in Huaihe region The impacts of climate change to the occurrence of drought and waterlog disasters and the reduction rate of crop yields were studied The adaptation to reduce impacts of climate change to drought and waterlog disasters was discussed by analyzing the impacts of climate changes in future

Meteorological Information System of C/S Three-layer Structure-Its Application and Extension in Agriculture

ZHANG Shun qian 1, XIONG Zhi qiang 1, DENG Biao 1,GAO Ying hua 2,TANG Yun hui 2 (1.Agro meteorological Center of Sichuan, Chengdu 610071;2.Chongqing Meteorological Bureau)

2002, 23(04):  . 

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The aim, principle and ideology of the design, the net work topological structures and the main functions of the meteorological information system of C/S three layer structure were interpreted The conception of the C/S three layer structure system and its application were introduced by comparing with the C/S two layer structure system The application and extension of this operation and service system in agriculture in Sichuan province were summarized

Agro-meteorology Operation and Service System in Shaanxi Province

LI Xing min, LIU An lin, FAN Jian zhong, JING Yi gang (Center of Agricultural Remote sensing information of Shaanxi Province, Xi'an 710015)

2002, 23(04):  . 

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The designations, features and functions of agro meteorology operation and service system in Shaanxi province were introduced This system includes collecting, managing, processing information and consulting service for agriculture This system is one of the operation and service plate form combinedwith agro meteorological knowledge, remote sensing information and service for agriculture

Meteorological Information Service Systems for Vegetable Production in Plastic House

GE Hui yan, ZHANG Yong hong (Meteorological Office of Weinan City, Shaanxi Weinan 714000)

2002, 23(04):  . 

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The background of climate, the selection of the varieties, the index of temperature and the management of production for vegetable production in plastic house in Weinan were analyzed The influences and hazards of disaster weather, such as high wind, strong decline of temperature, heavy snow and continuous overcast, and the methodology of the forecast for disaster weather were studied The service systems for vegetable production in plastic house were developed It consisted of the meteorological information, the forecast for disaster weather and defense measures The system would be directly used in the practice of the vegetable production in plastic house

A new Technique for Quick Raising of Crab Seedlings in Plastic House

ZHONG Ji hong 1, LI Zhi hong 2 (1 Meteorological Bureau of Baoying County, Jiangshu province, Baoying 225800; 2 Aquatic Bureau of Baoying County)

2002, 23(04):  . 

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The climatic conditions in plastic house were created for the growth and development of river crab seedlings By the developed modern raising techniques, the raising period of commercial river crabs were shortened from 2 ～3 years to 7～10 months, and the average weight of commercial river crabs reached at 110～135 g per crab The costs were reduced and economic benefits were improved by the new raising technique

Water-saving Effects of Integrated Drought-preventing Techniques for Winter Wheat

ZHU Zi xi, ZHAO Guo qiang, DENG Tian hong, FANG Wen song, FU Xiang jun (Henan Institute of Meteorology, Zhengzhou 450003)

2002, 23(04):  . 

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Based on the data of two years field experiment, the integrated techniques, such as pre sowing irrigation, deep ploughing, returning straw into soil,straw mulching, spraying drought preventing agent and limited irrigation were effective to reduce soil evaporation, increase soil water content, improve soil structure, increase soil fertility and reduce irrigation The wheat yields increased by over 10% and the water efficiency increased by 30% with this integrated drought preventing techniques

Soil Temperature and Soil Water Dynamics in Wheat Field Mulched with Maize Straw

CHEN Su ying, ZHANG Xi ying, LIU Meng yu (Shijiazhuang Institute of Agricultural Modernization, Shijiazhuang 050021)

2002, 23(04):  . 

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The field experiments on soil temperature and soil water dynamics in the wheat field mulched with maize straw were conducted The results show that the soil temperature and humidity in wheat field would increase in winter and early spring By mulching with maize straw it could be safe for overwintering of winter wheat, and however, the growth and tillering of winter wheat in spring would be restrained Since the soil evaporation was restrained effectively, the water efficiency could increase The yields of winter wheat would increase when the fields were mulched with 3000kg/hm 2 maize straw; but the yields of winter wheat would decrease when the fields were mulched with 6000kg/hm 2 maize straw

Classification of Eco-climate in the Karst Region of Yunnan-Guizhou Plateau

GU Ben wen, SHI Xiao hui (Meteorological Bureau of Yunnan Province, Kunming 650034)

2002, 23(04):  . 

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the climate types in the Karst region of Yunnan Guizhou Plateau by using principal component analysis and dynamic stepwise cluster analysis were classified In order to avoid some abuses of considering few climatic factors, the climatic, geographical, ecological factors were involved in this classification of eco climate The results are better objective and more tally with the actual situation