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据我们1975—1978年在20瓦黑光灯下系统观察,发现目前绝大多数棉区使用的黑光灯存在着“敌友”不分,杀伤大量自然益虫的严重情况,一盏灯四年对80余种农林害虫和40余种自然益虫的诱杀量为692,691只,其中自然益虫(包括重寄生和兼食性)就占77.61％。为了克服黑光灯杀伤大量自然益虫的不足,我们研制成功黑光灯的两种保益灭害装置,通过试验比较,效果显著。介绍如下,供参考。 一、孔筛漏斗木盆灯 用黑铁皮制作集虫漏斗,漏斗的上(大)口径56厘米,下(小)口径10厘米,高35厘米。漏斗的下(小)口附做有长15厘米,直径10厘米的收缩管。漏斗的周围密钻直径0.6厘米的圆孔,扑灯的隐翅虫、瓢
According to our systematic observation under 20 watts of black light from 1975 to 1978, it was found that the black light used in most cotton areas at present has the serious situation of “enemies and friends,” killing a large number of natural beneficial insects. The amount of trapping and killing of the remaining kinds of agroforestry and 40 species of natural beneficial insects was 692,691, of which 77.61% were natural beneficial insects (including parasitism and concurrent diet). In order to overcome the shortcomings of black light killing a large number of natural beneficial insects, we have successfully developed two kinds of protective and exterminating devices for black light, which have achieved remarkable results through trial and comparison. Introduced as follows, for reference. First, the hole sieve funnel Tubular lamp with black metal production set insect funnel, funnel on the (large) diameter of 56 cm, the next (small) caliber 10 cm, 35 cm high. Under the funnel (small) mouth attached to do have a 15 cm long, 10 cm diameter shrink tube. Funnel around the drill diameter of 0.6 cm round hole, the light trapped flies insect, scoop