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枸杞是名贵药材,有“红宝石”之美称,经济价值较高。在其全生育期中不同程度受着几种害虫的为害,轻者叶片蛀成孔洞,重者嫩尖、花、幼果食尽,严重影响了枸杞的生长发育及结实,对此,我们对主要的害虫做了初步的调查研究。 一、害虫主要种类 1、枸杞负泥虫,2、龟甲,3、藜花瓢虫。 二、发生情况 1、枸杞负泥虫:成虫又名金花虫,属叶甲科,成虫体长5.6毫米,背面有花点,卵橙黄色,长圆形,产在叶片上呈“八”字形排列,幼虫灰黄色,体背常被稀泥状粪便覆盖,故名“负泥虫”。卵产于叶面或叶背,一龄幼虫常群集于叶背面取食,二龄后逐渐分散,老熟幼虫入土2厘米深,吐白丝粘合土粒结成土茧,化蛹越冬。
Wolfberry is a valuable medicinal herbs, “Ruby” reputation, higher economic value. In its whole growth period, it was damaged by several pests to varying degrees. The leaves of the light were eaten into holes, and the tender tip, flowers and young fruits were exhausted, which seriously affected the growth and fruiting of Lycium barbarum. In this regard, The pests did a preliminary investigation. First, the main types of pests 1, medlar negative mud, 2, tortoiseshell, 3, Ladybugs ladybugs. Second, the occurrence of 1, wolfberry negative mud insect: also known as the gold pest insects, is a leaf family, adult body length 5.6 mm, abaxially flowers, oval orange, oblong, leaves in the production was “eight” shaped arrangement , Larva greyish yellow, body dorsal often covered with mucky excrement, hence the name “negative mud insect.” Eggs produced on the foliage or leaf back, the first instar larvae often clustered in the leaf back feeding, gradually dispersed after the second instar, mature larvae into the soil 2 cm deep, spit white silk clay particles into soil cocoon pupation winter.