花上长红蜘蛛怎么办

我家的几盆花上长了红蜘蛛,怎么才能除去啊?
2024-12-28 10:19:35
推荐回答(5个)
回答1:

可以采用以下方法去除:

1、专用药剂去除。三氯杀螨醇或氧化乐果1000倍稀释液,喷洒在花卉叶面上,可以去除。

2、蚊香烟熏。用点燃蚊香一盘,置于病株盆中,再用塑料袋连盆扎紧,经过一小时左右的烟熏后,不论成卵或成虫均可杀死。

3、草木灰加洗衣粉混合去除。取50克草木灰,加水2500克充分搅拌,浸泡两昼夜过滤,再加3克洗衣粉调均后喷洒,每日一次,连续一周左右,也可防治蚜虫、红蜘蛛。

4、柑橘皮泡水去除。用柑桔皮加水10倍左右浸泡24小时,过滤后喷洒植株,可防治蚜虫、红蜘蛛。

5、洗衣粉加烧碱混合去除。洗衣粉15克,20%的烧碱15毫升,水7.5千克,三者混匀后喷雾,连喷3天,红蜘蛛的死亡率为94%-98%。

扩展资料

红蜘蛛,又名棉红蜘蛛,俗称大蜘蛛、大龙、砂龙等,学名叶螨,我国的种类以朱砂叶螨为主,属蛛形纲、蜱螨目、叶螨科。分布广泛,食性杂,可危害110多种植物。

在栽培花卉过程中,红蜘蛛是常见的破坏者,受其害的有月季、米兰、茉莉、金桔、海棠、桂花、佛手等花。这种虫子个体很小,不到1 毫米,圆形或卵圆形,桔黄色或红褐色,由于体小不易发现,一旦发现其为害时,往往花卉受害已是比较重了。这种虫子为害方式是以口器刺入叶片内吮吸汁液,使叶绿素受到破坏,叶片呈现灰黄点或斑块,叶片桔黄、脱落,甚至落光。

防治红蜘蛛为害,平时应注意观察,发现叶片颜色异常时,应仔细检查叶背,个别叶片受害,可摘除虫叶;较多叶片发生时,应及早喷药,常用的农药有克螨特、三氯杀螨醇、乐果、花虫净、速灭杀丁等。家庭养花可备花卉喷雾器,在400 毫升水中,克螨特或速灭杀丁或花虫净可滴入4 滴(相当于2000 倍药液),用三氯杀螨醇或乐果可滴入8 滴(相当于1000 倍药液),加药后摇匀,随即喷洒,喷药要求均匀、周到,尤其要注意喷好叶背。

喷药时,最好将盆花移到室外进行,若在室内喷药,切勿接近食物、用具。每次用毕,把多余的药液倒出,用清水把喷雾器洗净。

参考资料:百度百科-红蜘蛛

回答2:

  花上长红蜘蛛防治:
  1、本身的生活习性决定。红蜘蛛繁殖力强,一年发生多代,发育速度快,周期短,两性、孤雌均可繁殖,适应性强,传播方式广。
  2、气候。对大多数红蜘蛛来说,均属于高温活动型。温度的高低决定了红蜘蛛各虫态的发育周期、繁殖速度和产量的多少。干旱炎热的气候条件往往会导致其大发生。因此,一定在高温干旱季节来临之前及时防治。
  3、天敌。害虫的自然天敌种类和数量很多,主要有深点食螨瓢虫、束管食螨瓢虫、异色瓢虫、大、小草蛉、小花蝽、植绥螨等,它们对控制害虫种群数量起到积极作用。因而,在防治害虫时勿伤天敌。
  4、化学防治。使用10%苯丁哒螨灵乳油(如国光红杀)1000倍液或10%苯丁哒螨灵乳油(如国光红杀)1000倍液+5.7%甲维盐乳油(如国光乐克)3000倍液混合后喷雾防治,建议连用2次,间隔7-10天。

回答3:

生了红蜘蛛是很麻烦的,如果是打杀虫杀菌剂杀不死的,可能是因为红蜘蛛产生了抗性问题,在打药时添加点增效剂助剂就行。如果家里的花上生长了红蜘蛛,除了打点杀虫杀菌剂之外,在平时照顾时定时给花浇水,降低温度,就能相应的减少红蜘蛛发生的几率了。

回答4:

你买一些除螨类的药剂就可以,我原来也试过用布沾少量的洗手液擦试花,也很管用!不过你还是买点药吧!

回答5:

红蜘蛛是螨虫,需要用红杀这种药物进行治疗!

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