Table of Content

10 March 1982, Volume 03 Issue 01

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The effect of Additional Temperature in forest and cold resisrant stracture of Tropical rubber Tree Canopy in China

Zhang Ke ying (Laboratory of Ecology,Kunming branch of Chinese Academy of Sciences)

1982, 03(01):  19-25. 

Asbtract ( 6550 )  

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The thermal-increasing efect of certain forest land has been investigated and it has some practical meanings for the rubber plantation in tropics of China. This artical is composed of three parts: part Ⅰ, The conditions for increasing the temperature inside the natural forest; part Ⅱ, increasing the temperature features of the intercropping rubber forest; part Ⅲ, the intercropping rubber forest with over crown canopy (by deciduous or sparse tree crown)in cold season is a reasonable community structure for building cold resistant rubber plantation("Biological cold-resistant structure).

A Research about Light—receiving on different plant types of Rice

Wang Yah—Yi Lu Jing—Huai Chen Yu—Quan Jiangsu Academy of Agricultufal Sciences

1982, 03(01):  29-36. 

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Due to the differences of rice plant types, light—receiving States and light distribution may appear distinctly. It gives much influences on photosynthesis, organ formation, and accumulation and distribution of dry matters. So it influences the formation of rice yields. Rice Varieties with different plant—types were used as experimental materials. As results of field observation and statistical analysis, some formula of light—receiving rate on rice community are obtained, the steps of the measurement of light—receiving were simplified and the rules and main characteristics of light—receiving rate on different plant types of rice community are elucidated. Thus a primary conclusion about the proper plant type for improving light—receiving and raising solar energy utilization of rice has been advanced.