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5月中(zhong)(zhong)旬開始，落葉松毛蟲(chong)在全國大部(bu)(bu)分發(fa)生區進入取食盛期(qi)。林(lin)間調查顯示，當(dang)前(qian)落葉松毛蟲(chong)在東(dong)(dong)(dong)北(bei)地(di)區蟲(chong)口密度同比偏高，遼(liao)寧東(dong)(dong)(dong)部(bu)(bu)和(he)北(bei)部(bu)(bu)、吉林(lin)中(zhong)(zhong)東(dong)(dong)(dong)部(bu)(bu)和(he)南部(bu)(bu)、黑龍江中(zhong)(zhong)東(dong)(dong)(dong)部(bu)(bu)和(he)西部(bu)(bu)、內蒙古東(dong)(dong)(dong)部(bu)(bu)等地(di)存在高發(fa)風險(xian)，已(yi)進入防治關鍵期(qi)。

全(quan)國落(luo)葉松(song)(song)毛(mao)蟲(chong)越冬代出蟄時間較常年普遍提前1周(zhou)左右(you)。今年，落(luo)葉松(song)(song)毛(mao)蟲(chong)正處(chu)于周(zhou)期(qi)性高發(fa)年份，整(zheng)體(ti)危(wei)害較常年偏重，東北局部(bu)地區或(huo)暴發(fa)成災。落(luo)葉松(song)(song)毛(mao)蟲(chong)在幼蟲(chong)時期(qi)主要啃食落(luo)葉松(song)(song)、紅松(song)(song)松(song)(song)葉，在一定(ding)區域內落(luo)葉松(song)(song)毛(mao)蟲(chong)過多(duo)將導致大片落(luo)葉松(song)(song)、紅松(song)(song)的針葉被吃光(guang)。

國家林草(cao)局森林和草(cao)原有害生物(wu)災害監測(ce)預(yu)報預(yu)警中(zhong)心專家建議，各地(di)要抓住5月中(zhong)旬(xun)防治關鍵時期(qi)，加強(qiang)(qiang)蟲源地(di)監測(ce)。可能成災區域(yu)要強(qiang)(qiang)化應急(ji)(ji)防控(kong)準備，加強(qiang)(qiang)應急(ji)(ji)隊伍建設(she)，及時采取除治措施。積極推廣應用物(wu)聯網、無人機、誘捕器(qi)等監測(ce)技術(shu)，采用白僵(jiang)菌、赤眼蜂、誘蟲燈等無公(gong)害防治技術(shu)。

（來源：中國林業信息網(wang)）