Number of N. lugens per 100 hills and population increase rate in the Yangtze River Delta from 2003–2010.
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* R- Proliferation multiple§The numbers in the brackets represent the date when the nymphal population was in early instars (I–III). The periods between the Aug. and Sept. dates were almost one month long and were nearly equal to the generation time of N. lugens.
创建时间：
2015-12-02
