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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