Table of Content

10 October 1997, Volume 18 Issue 05

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Thermal Efficiency of Small Lakes in the Basin of Lixia River in Jiangsu

Yang Dingwen Sha Guangming (Yangzhou Meteorological Bureau,Yangzhou 225002)

1997, 18(05):  . 

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Through investigation on the small lakes in the Basin of Lixia River in Jiangsu, the difference in temperature between water areas and their environments was analyzed. The denaturation and thermal transfer of air current over the water areas, the thermal efficiency of water and its influence on the near farmlands were dicussed. Besides, several models are established for estimating the extent and scope of thermal efficiency rising from water body with different scales.

Effect of Relative Light Intensity on Fruit Quality of “Fuji Apple”

Wei Qinping 1 Wang Liqin 1 Yang Dexun 2 Tang Fang 1 Gao Hongyu 1 (1 Department of Horticulture, Shandong Agricultural University,Taian 271018) (2 Agricultural Burean of Chengwu County, Shandong)

1997, 18(05):  . 

Asbtract ( 8742 )  

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Relative light intensity and fruit quality factors in different layers and parts of canopy were studied. The results showed that the relative light intensity was reduced gradually from the top layer to the interior of the lowest layer and fruit quality factors were different significently. Regression equation was used to set up the relationship between relative light intensity and the fruit factors. The optimum relative light intensity affecting fruit quality was obtained. The optimum relative light intensity for anthocyania, fruit soluble soild matter,and sugar were 77.9%, 60% and 60%, respectively. The optimum relative intensity for ofher quality factors were above 52%.

Study on the Three dimensional Migration Trajectory of Nilarparvata Lugens in Autumn in Eastern China

Hu Jichao Cheng Jiyi (Department of Plant Protection, Nanjing Agriculture University, Nanjing 210095) Chu Changshu Shen Tongli (Nanjing Meteorology Institute)

1997, 18(05):  . 

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The three dimensional migration trajectories of N.Lugens were calculated with simulated three dimension wind fields data derived from a mesometeorological model. These trajectories were analyzed combined with the insect radar observed data, The results showed that: (1)The three dimensional trajectories revealed the migration direction of N.Lugens is from Northeast to Southwest; (2)When they fly, their heights of flight are varied with time; (3)The three dimensional trajectories are coloser to the facts of N.Lugens’s migration and flight than the conventional two dimensional trajectories.

Thermal Efficiency of Small Lakes in the Basin of Lixia River in Jiangsu

Yang Dingwen Sha Guangming (Yangzhou Meteorological Bureau,Yangzhou 225002)

1997, 18(05):  . 

Asbtract ( 7211 )  

Related Articles | Metrics

Through investigation on the small lakes in the Basin of Lixia River in Jiangsu, the difference in temperature between water areas and their environments was analyzed. The denaturation and thermal transfer of air current over the water areas, the thermal efficiency of water and its influence on the near farmlands were dicussed. Besides, several models are established for estimating the extent and scope of thermal efficiency rising from water body with different scales.

The Grey Markov Chain Model for Prediction of First Frost and Its Utilization

Lu Xin Luo XianpingLi Hua(Shihezi Agri. College, Shihezi 832003)(Shihezi Meteorological Bereau)

1997, 18(05):  . 

Asbtract ( 7275 )  

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The occurrence of the first frost in Shihezi was analyzed by using the Grey Markov Chain model for prediction of first frost. The results showed that the predicted date of occurrence of the first frost in 1995 was on October 18th, which tallied with the actual situation.

Effect of Relative Light Intensity on Fruit Quality of “Fuji Apple”

Wei Qinping 1 Wang Liqin 1 Yang Dexun 2 Tang Fang 1 Gao Hongyu 1 (1 Department of Horticulture, Shandong Agricultural University,Taian 271018) (2 Agricultural Burean of Chengwu County, Shandong)

1997, 18(05):  . 

Asbtract ( 7517 )  

Related Articles | Metrics

Relative light intensity and fruit quality factors in different layers and parts of canopy were studied. The results showed that the relative light intensity was reduced gradually from the top layer to the interior of the lowest layer and fruit quality factors were different significently. Regression equation was used to set up the relationship between relative light intensity and the fruit factors. The optimum relative light intensity affecting fruit quality was obtained. The optimum relative light intensity for anthocyania, fruit soluble soild matter,and sugar were 77.9%, 60% and 60%, respectively. The optimum relative intensity for ofher quality factors were above 52%.