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果树食心虫主要有梨小食心虫和桃小食心虫,主要为害梨、桃、枣等果实。由于其整个幼虫期均在果实中度过,只有在老熟幼虫、成虫羽化、产卵期间暴露在外,所以老熟幼虫期、成虫期及卵期为整个虫态最为薄弱的环节,也是防治的最佳时期。要充分利用预测预报技术,准确预测成虫羽化高峰期,为科学防治提供依据。1.老熟幼虫出土时间的预测。在树木植株下距树干1米范围内扣置瓦片,瓦片稍大为宜,一般25厘米×45厘米,每株树下放置2个,园
Fruit tree worms mainly Pear Moth and Peach Moth, the main damage pears, peaches, dates and other fruits. Because the entire larval period are spent in the fruit, only in mature larvae, adult emergence, ovipositing during exposure, so mature larvae stage, adult stage and egg stage is the weakest part of the entire worm state, but also control Best time It is necessary to make full use of forecasting and forecasting techniques to accurately predict the emergence peak of adults and provide the basis for scientific prevention and control. 1. Prediction of the time of emergence of mature larvae. In the tree plant away from the trunk within 1 meter within the tile buckle, tiles slightly larger, generally 25 cm × 45 cm, placed under each tree 2, Park