推荐回答(4个)
用辣椒做出来的菜特别有味,所以大多数人家做菜,都要加点辣椒或辣椒制成品。在切新鲜辣椒时,经常会看到辣椒上有虫眼,切开后里面就有一条鲜活的小虫在里面,并且旁边排有许多粪便,这虫就是烟青害虫或棉铃虫等:
一、烟青虫
烟青虫,又叫烟夜蛾、烟实夜蛾。一年可以发生两代的虫。
【一】烟青虫四个不同阶段的形态
1.成虫阶段
烟青虫的成虫,体长约13~15毫米,翅展约25~35毫米,黄褐色,前面的鞘翅上有几条黑褐色的横细线、环状纹和肾状纹纯棉铃虫还清晰。黄褐色的后翅,黑褐色宽带的外缘稍窄
2.卵的阶段
烟青虫的卵,淡黄色卵壳上有网状样的花纹,卵较扁,可以清楚的看出卵孔。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2Fa8773912b31bb0514a7ace57267adab44aede077%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
3.幼虫阶段
烟青虫的幼虫,老熟的幼虫体形大小和休色变化和棉铃虫有点相似,体侧深色纵带上的小白点分散,圆锥形的体表小刺比棉铃虫要短,休壁柔薄而且比较光滑。
4.蛹阶段
烟青虫的蛹,纺锤形,红褐色,长度、颜色与棉铃虫相似,它的腹部末端有一对靠近基部的勾刺。
【二】、烟青虫的危害
1.烟青虫的成虫,一般在夜间产卵,开先产的卵多产在辣椒中部叶片背面的叶脉处,后期产的卵多在辣椒或花瓣上。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F2f738bd4b31c87011ae8cf99377f9e2f0708ff77%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
2.烟青虫的幼虫,刚孵化的幼虫在植株上爬行觅食辣椒花蕾,2~3龄以后蛀食辣椒,而且可以从这个辣椒转到那个辣椒,从这棵辣椒转到那棵辣椒为害。低龄的幼虫一天可以蛀害一个辣椒,高龄幼虫一天可以蛀害2~3个辣椒。
一般一个辣椒里面只有一个幼虫,密度大时虫就自相残杀。
幼虫把辣椒蛀开洞口后,钻入辣椒内部为害。幼口常蛀食辣椒的果皮和胎座,并在辣椒里缀丝,可污的是吃了辣椒还会排出大量的粪便留在辣椒里面,切开辣椒后就不想吃这个辣椒了。
幼虫也蛀食辣椒的嫩茎、嫩芽、叶片和花蕾。花蕾受害导致落花落蕾,辣椒受害就会出现腐烂和大量落果的现象。
辣椒的中熟和迟熟品种,生长得叶色浓绿茂盛,早现蕾的辣椒地里产卵多,为害严重。
辣椒的早熟品种,烟青虫在上面产卵少,被蛀食的辣椒也少,被危害程度轻。
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F267f9e2f07082838de53a16ba899a9014c08f177%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
幼虫都是昼伏夜出,有装死假象,幼虫老熟之后,离开辣椒入土化蛹,以蛹在土中越冬。5月份开始羽化,6月上中间、7月下旬、8月中下旬是烟青虫幼虫的三个高发期。
主要原因是辣椒树上的菜青虫,钻心虫所至,这种钻心虫有一个主要的特点,就是不怕辣,专钻辣椒果子的内部里去吃掉辣椒心,虫卵主要是把它们的虫卵产在辣椒种子上,掉落在地上的土壤中,到了第二年如果你在土壤上,重新种植辣椒树的话,那么当辣椒开花结果了之后,菜心虫去年所繁殖的虫卵新慢慢地生长出大量的虫子来了,主要是危害你树上长出来的辣椒果子。
辣椒中的虫眼主要就是由辣椒虫所害。这种虫的生长、发育、繁殖都依附于辣椒,蛀辣椒的同时还会导致辣椒黑斑病等。
很有可能是蚜虫所害,应该及时的使用植物专用防虫剂,均匀的喷洒在植物叶片上,用药期间不宜浇水,否则没有效果。
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