Abstract:

Solar lamp and chemicals were used to control insect pests on alfalfa field in QiQihaer. The effects of solar lamp control and chemicals control were evaluated. The results showed that six species of pests, including alfalfa thrips, acyrthosiphon pisum (Harris), L. pratensis, leaf miner, meadow moth, alfalfa weevil, were controlled well by solar lamp or chemicals. The benefits and costs of two controlling ways were analyzed, compared with non-treated (ck), 1535 kg hay yield and 2759 Yuan per hectare were added by using solar lamp; and 917 kg hay yield and 1726 Yuan per hectare were added by using chemical. There was no significance difference between the treatments. Considering the ecological and economic benefits of the two alfalfa pests control techniques, the solar lamp was more applicable, it can be popularized in large-area alfalfa planting.

Key words: Alfalfa, Pest control, Solar lamp, Chemicals

摘要：

通过在黑龙江省齐齐哈尔市苜蓿（Medicago Sativa）生产田中，开展利用太阳能杀虫灯和化学药剂防治虫害研究，对比二者之间的优劣性，探究太阳能杀虫灯防治苜蓿虫害技术。结果表明：无论太阳能杀虫灯还是化学药剂，均能有效防治当地6种主要的苜蓿虫害，包括苜蓿蓟马（Odontothrips phaleratus Haliday）、豆无网长管蚜（Acyrthosiphon pisum Harris）、牧草盲蝽（Lygus pratensis Linnaeus）、叶象甲[Hypera postica （Gyllenhal）]、草地螟（Coxostege sticticatis Linnaeus）、潜叶蝇（Phytomyza utricornis Meigen）。分析其防治成本及效益，太阳能杀虫灯防治每公顷干草增产1535 kg，增收2974元；化学药剂防治每公顷干草增产917 kg，增收1551元，二者无显著差异。但就综合生态效益和经济效益而言，太阳能杀虫灯防治技术优于化学药剂，可以在苜蓿种植中推广应用。

关键词: 苜蓿, 虫害防治, 太阳能杀虫灯, 化学药剂