4月(yue)21日-27日,寧(ning)夏中寧(ning)縣枸(gou)杞(qi)局技術(shu)干部通過(guo)對(dui)全縣枸(gou)杞(qi)病蟲(chong)害進行(xing)調(diao)查發(fa)(fa)現,紅癭(ying)蚊(wen)中度(du)(du)發(fa)(fa)生,木虱產卵(luan)量(liang)較高、各基(ji)地(di)都有不同程度(du)(du)的(de)發(fa)(fa)生,蚜蟲(chong)已(yi)普遍育化危害,經過(guo)技術(shu)人員的(de)指導,各基(ji)地(di)利用(yong)一(yi)周時間,采(cai)取人工摘除紅癭(ying)蚊(wen)蟲(chong)蕾及物理(li)、化學防(fang)治(zhi)措施,紅癭(ying)蚊(wen)發(fa)(fa)生明(ming)顯(xian)減輕,但也有個(ge)別枸(gou)杞(qi)基(ji)地(di)紅癭(ying)蚊(wen)防(fang)治(zhi)效果不明(ming)顯(xian)。
5月2日,寧夏中(zhong)(zhong)寧枸(gou)杞(qi)(qi)發展服務(wu)局(ju)聯合枸(gou)杞(qi)(qi)氣象服務(wu)中(zhong)(zhong)心(xin)對(dui)全(quan)縣各(ge)產(chan)(chan)區(qu)(qu)枸(gou)杞(qi)(qi)基(ji)(ji)地(di)(di)紅(hong)癭(ying)蚊發生情況進行了再(zai)調查發現(xian):防治(zhi)效(xiao)果(guo)不(bu)明顯的(de)有鳴沙產(chan)(chan)區(qu)(qu)的(de)不(bu)老子(zi)枸(gou)杞(qi)(qi)基(ji)(ji)地(di)(di)、清水(shui)河產(chan)(chan)區(qu)(qu)的(de)沃福百(bai)瑞(rui)枸(gou)杞(qi)(qi)基(ji)(ji)地(di)(di),其中(zhong)(zhong)不(bu)老子(zi)枸(gou)杞(qi)(qi)基(ji)(ji)地(di)(di)紅(hong)癭(ying)蚊發生率(lv)(lv)在20%~30%、花蕾(lei)(lei)危害(hai)率(lv)(lv)在30%左右,沃福百(bai)瑞(rui)枸(gou)杞(qi)(qi)基(ji)(ji)地(di)(di)紅(hong)癭(ying)蚊發生率(lv)(lv)在8%~18%、花蕾(lei)(lei)危害(hai)率(lv)(lv)在10%~20%,舟(zhou)塔產(chan)(chan)區(qu)(qu)(舟(zhou)塔合作社)、紅(hong)梧(wu)山產(chan)(chan)區(qu)(qu)(大地(di)(di)基(ji)(ji)地(di)(di))紅(hong)癭(ying)蚊發生率(lv)(lv)在4%~6%、花蕾(lei)(lei)危害(hai)率(lv)(lv)在7%~10%;防治(zhi)效(xiao)果(guo)比較好的(de)有清水(shui)河產(chan)(chan)區(qu)(qu)(上渠(qu)基(ji)(ji)地(di)(di))、天(tian)景山產(chan)(chan)區(qu)(qu)(紅(hong)寶(bao)基(ji)(ji)地(di)(di)、百(bai)瑞(rui)源基(ji)(ji)地(di)(di))已組織人員認(ren)真摘除蟲蕾(lei)(lei),沒有發現(xian)枸(gou)杞(qi)(qi)紅(hong)癭(ying)蚊。
針對(dui)調(diao)查出現的(de)問題,建議(yi)各企業(ye)、種植(zhi)大戶、茨農一定要(yao)嚴(yan)格(ge)按照(zhao)枸杞病蟲(chong)害“五(wu)步法(fa)”綠色(se)防(fang)(fang)控技術來進行防(fang)(fang)控,要(yao)樹立“預防(fang)(fang)為主、綜合防(fang)(fang)治(zhi)(zhi)(zhi)”的(de)防(fang)(fang)治(zhi)(zhi)(zhi)理念,拋棄過(guo)(guo)去有蟲(chong)或(huo)大發生(sheng)了再防(fang)(fang)治(zhi)(zhi)(zhi)的(de)思想(xiang),尤其“五(wu)步法(fa)”第(di)二步(4月(yue)上旬-5月(yue)下(xia)旬,展(zhan)葉至采果期(qi)(qi)(qi)(qi)前20天),采果前期(qi)(qi)(qi)(qi)藥(yao)劑防(fang)(fang)控壓基數(shu)依然是“五(wu)步法(fa)”安全防(fang)(fang)控的(de)關(guan)鍵階段,這段時間要(yao)通(tong)過(guo)(guo)加強(qiang)監測(ce)預報,抓(zhua)住防(fang)(fang)治(zhi)(zhi)(zhi)關(guan)鍵期(qi)(qi)(qi)(qi),把病蟲(chong)害控制(zhi)在(zai)防(fang)(fang)治(zhi)(zhi)(zhi)指標以(yi)內,保證采果期(qi)(qi)(qi)(qi)不(bu)使(shi)用化學(xue)農藥(yao)。5月(yue)上旬新枝(zhi)生(sheng)長期(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)點防(fang)(fang)治(zhi)(zhi)(zhi)癭(ying)螨的(de)二次擴散,現蕾期(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)點防(fang)(fang)治(zhi)(zhi)(zhi)紅癭(ying)蚊(wen),花期(qi)(qi)(qi)(qi)前至花期(qi)(qi)(qi)(qi)重(zhong)(zhong)(zhong)點防(fang)(fang)治(zhi)(zhi)(zhi)薊馬(ma)。紅癭(ying)蚊(wen)還是以(yi)摘除蟲(chong)蕾為主,按照(zhao)第(di)四期(qi)(qi)(qi)(qi)植(zhi)保情報的(de)防(fang)(fang)治(zhi)(zhi)(zhi)措施抓(zhua)住關(guan)鍵,嚴(yan)格(ge)按照(zhao)藥(yao)劑間隔(ge)期(qi)(qi)(qi)(qi),交替使(shi)用藥(yao)劑防(fang)(fang)治(zhi)(zhi)(zhi),以(yi)免產(chan)生(sheng)抗藥(yao)性(xing)。