Table of Content

10 February 2000, Volume 21 Issue 01

Previous Issue    Next Issue

Cover Download

Article Download

论文

Numerical Simulation of Agroclimatic Resources for Spring Maize in Northeast China

LIU Jian dong 1, FU Bao pu 2, JIN Zhi qing 3 (1. Agrometeorological Center, Chinese Academy of Meteorological Sciences, Beijing 100081;2.Department of Atmospheric Sciences, Nanjing University; 3. Jiangsu Academy of Agricultural Sciences)

2000, 21(01):  . 

Asbtract ( 10582 )  

Related Articles | Metrics

The numerical model ‘ARID CROP’ was used to simulate the agroclimatic resources for spring maize in northeast China. The results of simulation showed that the potential productivity increased from 4.5t/hm 2 in the north to 22.5t/hm 2 in the south of the area. The production potentials of photo temperature in the area was analysized and it was found that the agroclimatic production potential can increase by about 45% in the west area when the water is suitable for spring maize growth.

A Multiple-information Agrometeorological Forecast System

LU Zhi guang, CHEN Yong hua, CHEN Lin (Faculty of Rosource and Envionment, China Agricultural University, Beijing 100094)

2000, 21(01):  . 

Asbtract ( 6726 )  

Related Articles | Metrics

An agrometeorological forecast system with the main purpose of long term or extra long term agrometeorological prediction was developed by using multiple informations such as atmospheric circulation, marine temperature, sunspot area index as forecast informations. This system containes a large quantity and wide range of information and the so called “Xieji” technology, i.e.using various modles to forecast the same target, was used to deal with the forecast factors, and thus improved the independence of the factors. The accuracy of agrometeorological forecast is improved greatly.

A Study of the Amount and Law of Water Consumed by Meadow Vegetation during the Growth Stage in Subfrigid Zone and Humid Regions of Plateau

Yao Yubi (Meteorological Bureau of Gannan Tibetan National Autonomous Prefecture, Gansu Province,Hezuo 747000)

2000, 21(01):  . 

Asbtract ( 6698 )  

Related Articles | Metrics

The soil moisture data, the meteorological element and the ground primary biomass data from 1985~1994 were used to analyse the amount and law of water consumed by meadow vegetation during growth stage in subfrigid zone and humid regions of plateau. The seasonal variation of the ground primary biomass and water consumption and the relationship between them were analysed.

Loss Assessment of Staple Crops Caused by Major Agrometeorological Disasters in Hebei Province

WEI Rui jiang, YAO Shu ran, WANG Yun xiu (Hebei Meteorological Institute, Shijiazhuang 050021)

2000, 21(01):  . 

Asbtract ( 8354 )  

Related Articles | Metrics

Various agrometeorological disasters occured at different development stages of crops caused yield reduction. Based on the major agrometeorological disasters in farming activities such as drought, flood, wind, hail, freezing etc., and by analyzing the factors that influence the extent of disasters in crop growth and yield, a assessment method to grade and evaluate the disaster damage to the agriculture was established. This method depends on an index system that is developed according to the agriculture in Hebei Province. This assessment method gave good results in last two year’s practical use. Key words:Agrometeorological disaster; Loss assessment method CHEN Jin Hua (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008)

The Method for Identification of Spring Cloudy-moist Hazard of Wheat in the Region to the South of Huaihe River

HUANG Yu hua, WU Jin gang, GAO Ping (Jiangsu Meteorological Institute, Nanjing 210008)

2000, 21(01):  . 

Asbtract ( 7046 )  

Related Articles | Metrics

The high and stable yields of wheat are mainly affected by spring cloudy moist hazards in the region to the south of Huaihe River. A identification method was developed according to an index Q in this paper. The method was applied to the identification of damage in 1998, a better results were obtained.

Research on Winter Wheat Phenology and Climate in Xinjiang

HUANG Jing feng 1, WANG Xiu zhen 1, CAI Cheng xia 2 (1. Institute of Agricultural Remote Sensing, Zhejiang University, Hangzhou 310029; 2.Xinjiang Institute of Meteorology)

2000, 21(01):  . 

Asbtract ( 8995 )  

Related Articles | Metrics

Using winter wheat phenological and climatical data of 24 agrometeorological observatorises in Xinjiang from 1980 to 1990 phenological phase and its distribution rule, phenological stage and its agroclimatical conditions were investigated. The results are shown as follows: (1) In autumn, the lower the latitude and the altitude are, the later the winter wheat phenological phase is. In spring and early summer, the higher the latitude and altitude are, the later the winter wheat plenological phase is.(2)The effect of latitude and altitude on the phenological phase is not constant, but varies with different phenological phases.(3)The duration from seeding date to growth ceased date in winter is 58 days. It is 60 days from regreening date to boot date and 41 days from heading date to ripen date. The higher the altitude above sea level is, the longer the duration is.(4)The accumulated temperature for winter wheat is relative stable. Comparison between the actual and needed accumulated temperature before winter show that the actual seeding date for most of areas of Xinjiang are suitable.

The Problems Concerning the Response of China's Cropping Systems to Global Climatic Changes Ⅰ The Effect of Climatic Changes on Cropping Systems in China

ZHANG Hou xuan (Institute of Agrometeorology, CAAS, Beijing 100081)

2000, 21(01):  . 

Asbtract ( 6732 )  

Related Articles | Metrics

There will be an obvious important effect of global climatic change in future on cropping systems in China The heat resource will be increased to a certain extent in all regions of China, and the north borderline of two crops per annual or three crops per annual will move northwardly, the cropping range, output and quality of crps will be changed However, there will be a uncertainty of changes of cropping systems due to the adverse impact of moisture changes of climate in the future