通过虫期发生量预测式，预测不同虫态的发生量，所预测的幼虫和成虫发生盛期与实查结果基本吻合。
Based on the forecasting equation, the occurrence amount of this pest was calculated in different metamorphosis phases.
结果表明，不同虫态及虫龄的多酚氧化酶活力有很大的不同，其中以5龄幼虫酶活力最高，蛹酶活力最低。
The enzyme activity of the 5th instar was the highest and that of the pupa was the lowest.
不同虫态及虫龄的血清和血细胞中酚氧化酶活力有很大的不同，血清和血细胞中酚氧化酶活力变化规律一致。
The enzyme activity in plasma or haemocytes was different at different stages and instars, but the change trend of the enzyme activity in plasma and haemocytes was consistent.
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