4月(yue)21日(ri)-27日(ri),寧夏中寧縣枸杞(qi)局技(ji)術干部通過對全縣枸杞(qi)病蟲害進行調查發現,紅癭蚊中度發生,木虱產(chan)卵(luan)量(liang)較高、各基地(di)(di)都有不同程度的發生,蚜蟲已普(pu)遍育化(hua)危害,經(jing)過技(ji)術人員的指(zhi)導(dao),各基地(di)(di)利用一周時(shi)間,采(cai)取(qu)人工摘(zhai)除紅癭蚊蟲蕾(lei)及(ji)物理(li)、化(hua)學防治措施(shi),紅癭蚊發生明(ming)顯減輕,但也有個(ge)別(bie)枸杞(qi)基地(di)(di)紅癭蚊防治效(xiao)果不明(ming)顯。
5月(yue)2日,寧夏(xia)中(zhong)寧枸(gou)(gou)(gou)杞(qi)(qi)發(fa)(fa)展服務(wu)局聯合(he)枸(gou)(gou)(gou)杞(qi)(qi)氣象服務(wu)中(zhong)心對全縣各產(chan)(chan)區枸(gou)(gou)(gou)杞(qi)(qi)基(ji)地(di)(di)(di)紅(hong)癭(ying)(ying)(ying)蚊(wen)發(fa)(fa)生情況進(jin)行了再調查發(fa)(fa)現(xian):防治效果(guo)(guo)不明(ming)顯的(de)(de)有鳴沙產(chan)(chan)區的(de)(de)不老子枸(gou)(gou)(gou)杞(qi)(qi)基(ji)地(di)(di)(di)、清(qing)水(shui)河產(chan)(chan)區的(de)(de)沃福百瑞枸(gou)(gou)(gou)杞(qi)(qi)基(ji)地(di)(di)(di),其中(zhong)不老子枸(gou)(gou)(gou)杞(qi)(qi)基(ji)地(di)(di)(di)紅(hong)癭(ying)(ying)(ying)蚊(wen)發(fa)(fa)生率(lv)(lv)在(zai)20%~30%、花(hua)蕾(lei)危(wei)害率(lv)(lv)在(zai)30%左右,沃福百瑞枸(gou)(gou)(gou)杞(qi)(qi)基(ji)地(di)(di)(di)紅(hong)癭(ying)(ying)(ying)蚊(wen)發(fa)(fa)生率(lv)(lv)在(zai)8%~18%、花(hua)蕾(lei)危(wei)害率(lv)(lv)在(zai)10%~20%,舟(zhou)塔(ta)產(chan)(chan)區(舟(zhou)塔(ta)合(he)作(zuo)社)、紅(hong)梧山產(chan)(chan)區(大地(di)(di)(di)基(ji)地(di)(di)(di))紅(hong)癭(ying)(ying)(ying)蚊(wen)發(fa)(fa)生率(lv)(lv)在(zai)4%~6%、花(hua)蕾(lei)危(wei)害率(lv)(lv)在(zai)7%~10%;防治效果(guo)(guo)比較好的(de)(de)有清(qing)水(shui)河產(chan)(chan)區(上渠基(ji)地(di)(di)(di))、天(tian)景山產(chan)(chan)區(紅(hong)寶基(ji)地(di)(di)(di)、百瑞源(yuan)基(ji)地(di)(di)(di))已組織人員認真摘除蟲蕾(lei),沒有發(fa)(fa)現(xian)枸(gou)(gou)(gou)杞(qi)(qi)紅(hong)癭(ying)(ying)(ying)蚊(wen)。
針對調查出現(xian)的(de)(de)(de)問題(ti),建(jian)議各(ge)企業、種植大(da)戶(hu)、茨農一(yi)定要嚴(yan)(yan)格按照(zhao)枸(gou)杞病蟲害(hai)“五步法(fa)(fa)”綠色防(fang)(fang)(fang)(fang)(fang)控(kong)(kong)(kong)技術(shu)來進行防(fang)(fang)(fang)(fang)(fang)控(kong)(kong)(kong),要樹立“預防(fang)(fang)(fang)(fang)(fang)為主、綜合防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)”的(de)(de)(de)防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)理(li)念,拋棄過去有蟲或大(da)發生(sheng)了(le)再防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)的(de)(de)(de)思想,尤其“五步法(fa)(fa)”第二步(4月上旬(xun)-5月下旬(xun),展葉至(zhi)采(cai)果(guo)期(qi)(qi)(qi)前(qian)20天(tian)),采(cai)果(guo)前(qian)期(qi)(qi)(qi)藥劑(ji)防(fang)(fang)(fang)(fang)(fang)控(kong)(kong)(kong)壓基數依然(ran)是(shi)“五步法(fa)(fa)”安全防(fang)(fang)(fang)(fang)(fang)控(kong)(kong)(kong)的(de)(de)(de)關鍵(jian)階段(duan),這段(duan)時間(jian)要通過加(jia)強監測預報(bao),抓住防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)關鍵(jian)期(qi)(qi)(qi),把病蟲害(hai)控(kong)(kong)(kong)制在防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)指標(biao)以(yi)內,保證采(cai)果(guo)期(qi)(qi)(qi)不使用化學農藥。5月上旬(xun)新(xin)枝(zhi)生(sheng)長期(qi)(qi)(qi)重點(dian)(dian)防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)癭螨的(de)(de)(de)二次擴(kuo)散,現(xian)蕾期(qi)(qi)(qi)重點(dian)(dian)防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)紅(hong)癭蚊,花期(qi)(qi)(qi)前(qian)至(zhi)花期(qi)(qi)(qi)重點(dian)(dian)防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)薊(ji)馬。紅(hong)癭蚊還是(shi)以(yi)摘除蟲蕾為主,按照(zhao)第四(si)期(qi)(qi)(qi)植保情報(bao)的(de)(de)(de)防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi)措施抓住關鍵(jian),嚴(yan)(yan)格按照(zhao)藥劑(ji)間(jian)隔期(qi)(qi)(qi),交替使用藥劑(ji)防(fang)(fang)(fang)(fang)(fang)治(zhi)(zhi),以(yi)免產生(sheng)抗藥性。