黄板在梨园蚜虫测报中的应用效果评价

Assessment of Yellow Sticky Card Traps in Monitoring of Aphids (Aphididae) Population in Pear Orchard

为评价黄色黏虫板在梨园蚜虫测报中的应用效果,分别在大棚和露地栽培的梨园内悬挂黄板,并统计田间新梢蚜虫为害率及黄板上诱集蚜虫的数量。调查发现平均每张黄板上蚜虫诱集量与黄板悬挂期间的平均温度及最高、最低湿度呈显著负相关。田间新梢蚜虫发生率与黄板上蚜虫诱集量有显著的线性关系,但黄板诱集蚜虫个别预测值不可信,可以利用平均值的预测区间结合田间无翅蚜发生高峰来预测田间蚜虫的发生情况。另外,黄板上诱集到的蚜虫天敌与蚜虫的数量关系密切。

Yellow sticky card traps were suspended on pear trees growing in open tmlcl and greenhouse to assess the possibility of using the traps in monitoring aphid population. New shoots infested with aphids and aphids stuck to the traps were recorded. It was observed that the average temperature, the maximum and minimum daily humidity were in significantly negative correlation with the number of trapped aphids. New shoots with aphids were in significant linear relationship with the number of aphids trapped. However, numbers of aphids on individual traps were not confident enough to make a reliable prediction of aphid population. It is therefore suggested that the intervals between average aphid numbers on traps be used in combination with the peak population of apterous aphids to predict field aphid occurrence. It was also found that the quantities of natural enemies of aphids on the yellow sticky card traps were also correlated to trapped aphids.