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用宁夏引黄灌区无齿稻蝗的卵和若虫,在自然变温和恒温条件下处理,试验数据用自然变温公式计算。结果表明,卵的发育起点温度为14.23℃±0.85,有效积温为190.59日度;若虫的发育起点温度为16.52℃±0。36,有效积温为365.03日度。
The eggs and nymphs of Oxya chinensis in Ningxia Yellow River irrigated area were treated under the condition of natural temperature and constant temperature. The experimental data were calculated by the natural temperature change formula. The results showed that the starting temperature of egg development was 14.23 ℃ ± 0.85 and the effective accumulated temperature was 190.59 days. The starting temperature of nymphs was 16.52 ℃ ± 0.36, and the effective accumulated temperature was 365.3 days.