泾河川区日光温室蔬菜南美斑潜蝇时空分布态势观察

Observed on Spatial and Temporal Distribution of South American Leaf Miner in Greenhouse Vegetables of Jing River Area

在平凉市泾河川区日光温室条件下,观察了南美斑潜蝇的时空分布态势。结果表明,在日光温室蔬菜生产期内,南美斑潜蝇的种群数量消长呈两头高、中间低的势态。成虫密度在日光温室内从南到北渐次减少。在甜瓜上,卵主要产在植株顶部和上部,低龄幼虫的为害部位以上部为主;在多分枝作物菜豆上,卵主要产在植株冠层的外围和中层,以外围最多。化蛹场所与温室蔬菜作物的种类有关,以落地化蛹居多,且多集中在浅层土表。

The spatial and temporal distribution of South American leaf miner situation was observed under the conditions of greenhouse in Pingliang Jing river area.The results showed that the rise and fall of the South American leaf miner populations were two high,middle and low momentum in the greenhouse vegetable production period,and adult density gradually decrease in the solar greenhouse from south to north.In the melon,the eggs produced mainly in plants at the top and upper parts,the dangers of young larvae above as the main department.In bean crop in many branches,the eggs produced mainly in the periphery of the plant canopy and middle to outer most.The pupation sites are related with the kinds of greenhouse vegetable crops,mostly to ground to pupate,and more concentrated in the shallow soil surface.