shixia,zhengzhiludixiguashangshijijie,danjizhezaicaifangshi,henduoguanongfanying,jinlaixiguaguamanshouyizhonghuangsexiaochongweihai,zhishichangshishoudaohendayingxiang,youxiezhizhunenshaobianyingjuanqu、發黃枯萎,有的植株甚至出現幼果脫落,不知道該如何防治。
這(zhe)種(zhong)蟲(chong)子(zi)應(ying)該(gai)是(shi)薊(ji)馬(ma)。若(ruo)不(bu)及(ji)早(zao)防(fang)治(zhi),將(jiang)嚴(yan)重(zhong)影(ying)響(xiang)植(zhi)株(zhu)的(de)生(sheng)長(chang)及(ji)果(guo)實(shi)的(de)品(pin)質(zhi),同(tong)時(shi)可(ke)能(neng)誘(you)發(fa)病(bing)毒(du)病(bing)及(ji)其(qi)他(ta)病(bing)害(hai)的(de)發(fa)生(sheng),從(cong)而(er)造(zao)成(cheng)病(bing)蟲(chong)害(hai)大(da)麵(mian)積(ji)發(fa)生(sheng)。
薊馬喜歡溫暖、幹旱的天氣,其適溫為23℃~30℃,因yin此ci,要yao及ji時shi清qing除chu田tian間jian雜za草cao,增zeng加jia灌guan溉gai,從cong而er調tiao節jie田tian間jian小xiao氣qi候hou,使shi其qi不bu利li於yu薊ji馬ma生sheng存cun。其qi次ci,要yao加jia強qiang肥fei水shui管guan理li,促cu進jin植zhi株zhu健jian壯zhuang生sheng長chang,隻zhi有you植zhi株zhu長chang勢shi良liang好hao,才cai能neng有you效xiao抵di抗kang薊ji馬ma的de危wei害hai。同tong時shi要yao注zhu意yi,如ru果guo有you土tu壤rang板ban結jie現xian象xiang,須xu及ji時shi中zhong耕geng,以yi促cu進jin根gen係xi生sheng長chang發fa育yu,防fang止zhi植zhi株zhu萎wei蔫nian枯ku死si。除chu此ci之zhi外wai,在zai盛sheng發fa期qi內nei,還hai可ke在zai田tian間jian設she置zhi黃huang板ban來lai誘you殺sha成cheng蟲chong,這zhe種zhong方fang法fa簡jian便bian又you環huan保bao,效xiao果guo也ye不bu錯cuo。
藥劑防治上目前多采用高效、低毒、持效期長的藥劑,可用10%吡蟲啉可濕性粉劑1500倍液,或3%啶蟲脒乳油1500倍,當然,敵百蟲效果也不錯。但不同性質的藥劑最好能交替使用,以免薊馬產生抗藥性。
同(tong)時(shi),農(nong)田(tian)的(de)病(bing)蟲(chong)害(hai)治(zhi)理(li)還(hai)應(ying)以(yi)預(yu)防(fang)為(wei)主(zhu)。因(yin)此(ci),對(dui)於(yu)下(xia)茬(cha)西(xi)瓜(gua)一(yi)定(ding)要(yao)做(zuo)好(hao)前(qian)期(qi)預(yu)防(fang)措(cuo)施(shi)。首(shou)先(xian),在(zai)選(xuan)地(di)時(shi)要(yao)選(xuan)擇(ze)遠(yuan)離(li)雜(za)草(cao)叢(cong)生(sheng)地(di),無(wu)瓜(gua)類(lei)作(zuo)物(wu)連(lian)作(zuo),土(tu)壤(rang)肥(fei)沃(wo),灌(guan)溉(gai)便(bian)利(li),通(tong)風(feng)良(liang)好(hao)的(de)田(tian)地(di)。其(qi)次(ci),要(yao)徹(che)底(di)清(qing)除(chu)田(tian)間(jian)雜(za)草(cao)和(he)枯(ku)枝(zhi)殘(can)葉(ye),集(ji)中(zhong)燒(shao)毀(hui)或(huo)深(shen)埋(mai)。同(tong)時(shi),播(bo)前(qian)要(yao)進(jin)行(xing)深(shen)耕(geng),並(bing)用(yong)生(sheng)石(shi)灰(hui)對(dui)土(tu)壤(rang)進(jin)行(xing)消(xiao)毒(du),從(cong)而(er)起(qi)到(dao)殺(sha)卵(luan)滅(mie)菌(jun)的(de)作(zuo)用(yong)。
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