【摘要】 在恒温条件下测定了稻螟蛉各虫态的发育历期、发育起点温度和有效积温。试验表明：在14，19，24，28，32℃恒温处理下，全世代发育历期分别为56．750，41．179，32．696，22．986，16．334d。全世代发育起点温度为9．39℃。有效积温为395．31d℃；测定了各虫态的过冷却点和结冰点。其越冬蛹的过冷却点为-27．65℃、结冰点为-22．56℃，证实了稻螟蛉可以蛹态在沈阳地区越冬。更多还原

【Abstract】 This article reported the development times, development zero and thermal constants of rice leaf caterpillar by all stages under constant temperature. The results indicated that the total development times were 56.750, 41.179,32.696, 22.986, 16.334 days respectively under 14, 19, 24, 28, 32 ℃ condition. The total development zero was 9.39℃ and the total thermal constant was 395.31 day-degree. The supper cooling points and freezing points of each stage were also measured. The supper cooling point of the over-wintering pupa was--27.65℃ and the freeaing point was -22.56℃, which indicated that the rice leaf caterpillar could survive during winter as pupa in Shenyang region.更多还原