Table of Content

10 September 1988, Volume 09 Issue 03

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LIGHT DISTRIBUTION IN MODELED FOLIAGE GROUPINGS

Ma Wiezeng (Huazhong Agricultural University,Wuhan)

1988, 09(03):  45-54. 

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This paper discusses the differingdistribution of direct solar light anddiffuse solar light,which are scatterednot only by the sky but foliage andreflection from the ground,in modeledfoliage groupings.The methods of cal-culating their intensities on horizontoland leaf surfaces are given and theircharacteristics are discussed.

EFFECT OF LIGHT AND TEMPERATURE TO GRAIN WEIGHT AND SEEDING TIME IN UPLAND RICE VARIETIES“QIN AI”AND“JI GENG NO.7”

Diao Yingyuan Ma Xioling Zhang Wenxu (Beijing Agricultural University)

1988, 09(03):  40548-405. 

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Bring productive potentiality intofull play of upland rice variety“QinAi”seeding on unfallowing field of wheatin Beijing and Tianjing area.The diff-erent seeding time experiment of “QinAi”and“Ji Geng No. 7”was goneon.As result to variant grain weightwith seeding time because there are di-fferent light and temperature in diffe-rent seeding time,since the optimumseeding time is earlier 10-20 days thanthe seeding time of unfallowing fieldof wheat.We suggested that the“QinAi”are seeded on unfallowing field ofearly maturity wheat.