结果表明：所调查虾池浮游植物的碳同化数（以每克叶绿素计）平均为11。
The mean assimilation number of phytoplankton in the test ponds was 11.
用SPAD - 50 2叶绿素计和相关函数可迅速测定作物叶片的叶绿素含量。
Chlorophyll content of crop leaves would be determined quickly using SPAD-502 chlorophyll meter.
由于叶绿素计SPAD - 502携带方便、测定简便、迅速，且不损坏叶片，应在林业研究中积极推广使用。
Chlorophyll meter SPAD-502 should be used broadly in forestry research because of its convenience to carry, simple and rapid measurement, and no damage to leaves.
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