【摘要】 通过对松突圆蚧发育的起点温度和有效积温进行测定,结果表明,各虫期的发育起点温度分别为:1龄若虫6 912±0 2268℃,2龄若虫10 59±0 5329℃,蛹期11 27±0 9715℃,雌成虫期11 77±1 0422℃,整个生活史9 60±0 5387℃;有效积温分别为:1龄若虫205 04DD,2龄若虫165 53DD,蛹期76 31DD,雌成虫期381 24DD,整个生活史797 22DD。更多还原

【Abstract】 The paper deals with the threshold temperature for development and effective cumulative temperature of Hemiberlesia pitysophila Takagi.The results showed that the threshold temperatures for the development of the First instar nympha,the Second instar nympha,the pupa and the female adult were 6.912±0.2268℃,10.59±0.5329℃,11.27±0.9715℃,11.77±1.0422℃,9.60±0.5387℃,respectively.The effective cumulative temperatures for development were 205.0354,165.5313,76.31,381.2449 day-degrees,respectively.Completing one generation needed 797.2184 day-degrees above 9.60±0.5387℃.更多还原