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【實(shí)用技術(shù)】冬季設(shè)施蔬菜病蟲(chóng)害綜合防控——紅蜘蛛

2024-11-26 09:22:06 來(lái)源:鄂爾多斯市農(nóng)牧局 閱讀量:19101 評(píng)論

導(dǎo)讀:由于個(gè)體小繁殖快給設(shè)施蔬菜紅蜘蛛防治造成較大壓力,廣大種植戶防控不善時(shí)易造成農(nóng)藥超標(biāo),發(fā)生農(nóng)產(chǎn)品安全事件,因此望廣大種植戶采用綜合防控措施,科學(xué)安全用藥。

  【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新】 紅蜘蛛又名葉螨,屬蛛形綱、蜱螨目、葉螨科,食性雜。成蟲(chóng)體長(zhǎng)為0.42~0.52mm,體色變化大,通常為紅色、梨形、背部?jī)蓚?cè)各有黑斑。主要危害茄科、豆科、瓜類等蔬菜。以成、若螨群集在葉背、花、果上刺吸汁液并吐絲結(jié)網(wǎng),危害初期,沿葉脈出現(xiàn)黃白色似葉尖大小的斑點(diǎn),迅速發(fā)展呈灰白色或黃白色色斑,使植株光合作用受到抑制或破壞,嚴(yán)重時(shí)葉片干枯脫落。一般先危害中下部葉片,再向上蔓延。由于個(gè)體小繁殖快給設(shè)施蔬菜紅蜘蛛防治造成較大壓力,廣大種植戶防控不善時(shí)易造成農(nóng)藥超標(biāo),發(fā)生農(nóng)產(chǎn)品安全事件,因此望廣大種植戶采用綜合防控措施,科學(xué)安全用藥。
 
  綜合防治措施
 
  田間紅蜘蛛防除要堅(jiān)持綜合防治措施,既要提高植株的抗逆能力,還要充分利用物理、生物和藥劑防治措施,抑制蟲(chóng)害擴(kuò)張,從而控制為害。
 
  1
 
  以勤治蟲(chóng)
 
  日常田間管理過(guò)程中,一要及時(shí)清理田間雜草、雜葉、枯枝,破壞紅蜘蛛的生存環(huán)境,滅除部分蟲(chóng)源,控制田間的蟲(chóng)口基數(shù);二要勤施水肥,定期澆水施肥,確保田間水分和營(yíng)養(yǎng)物質(zhì)的供應(yīng),促進(jìn)蔬菜植株健康茁壯的成長(zhǎng),增強(qiáng)植株的抗蟲(chóng)害能力。
 
  2
 
  以蟲(chóng)治蟲(chóng)
 
  蔬菜紅蜘蛛的天敵種類較多,主要有中華草蛉、食螨瓢蟲(chóng)、深點(diǎn)食螨瓢蟲(chóng)、捕食螨、花蝽等,可采用人工養(yǎng)殖的捕食螨、食螨瓢蟲(chóng)和花蝽在紅蜘蛛發(fā)生早期按照一定的比例釋放到田間,能有效抑制害蟲(chóng)的種群規(guī)模擴(kuò)張,避免紅蜘蛛肆意為害田間蔬菜,減少化學(xué)農(nóng)藥使用。
 
  3
 
  以藥治蟲(chóng)
 
  在紅蜘蛛發(fā)生早期可采用生物類農(nóng)藥防治,尤其是在蔬菜地點(diǎn)片發(fā)生時(shí),可用苦參堿、藜蘆堿、茴蒿素、苦皮藤素等生物類農(nóng)藥進(jìn)行噴霧控制?;瘜W(xué)藥劑滅除害蟲(chóng)的方法簡(jiǎn)單,效果最快,時(shí)空限制小,可選用阿維菌素乳油、噠螨酮乳油、聯(lián)苯菊酯微乳油或者其它的特有專屬滅蟲(chóng)劑。噴施藥劑前,要認(rèn)真閱讀使用說(shuō)明書(shū),按照要求和蟲(chóng)害嚴(yán)重程度,確定藥液用量和濃度,噴施過(guò)程要佩戴護(hù)具,規(guī)范噴施,主要施藥間隔期,降低藥害的發(fā)生概率。
 
  4
 
  以膠治蟲(chóng)
 
  具研究表明近8成的紅蜘蛛來(lái)源于地表,因此使用粘蟲(chóng)膠涂抹到植株表皮,就能有效阻礙紅蜘蛛的遷徙通道,把蟲(chóng)源截于植株下部,實(shí)現(xiàn)切斷蟲(chóng)源的目標(biāo),該方法適合果菜類地塊。一般在植株莖基部先粘貼膠帶,再均勻涂抹膠水,膠寬5厘米,隔30-50天重復(fù)涂抹?;蛘哔N近植株根部鋪設(shè)粘蟲(chóng)板控制發(fā)生。
 
  廣大蔬菜種植戶田間出現(xiàn)紅蜘蛛的危害不容小覷,要高度關(guān)注,重點(diǎn)監(jiān)測(cè)預(yù)防,積極采取措施防治,優(yōu)先采用綜合防治措施,必要時(shí)在設(shè)施蔬菜栽培早期科學(xué)安全使用農(nóng)藥,嚴(yán)格按農(nóng)藥標(biāo)簽說(shuō)明用藥,確保農(nóng)業(yè)生產(chǎn)安全、農(nóng)產(chǎn)品質(zhì)量安全、生態(tài)環(huán)境安全和人畜健康安全,切實(shí)做到科學(xué)安全使用農(nóng)藥。
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