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6月(yue)是(shi)松褐天牛(niu)(niu)羽化(hua)高峰(feng)期，為有效(xiao)防控(kong)松材線蟲(chong)病(bing)傳(chuan)播(bo)。6月(yue)21日(ri)—25日(ri)，湖南(nan)省多(duo)地天氣(qi)晴好(hao)，汨羅(luo)市、韶山市、江永縣(xian)(xian)、桃源縣(xian)(xian)、瀏陽(yang)(yang)市、臨澧縣(xian)(xian)和岳陽(yang)(yang)縣(xian)(xian)等7個市縣(xian)(xian)針對松材線蟲(chong)病(bing)疫區(qu)域開(kai)展無人機(ji)空中噴霧(wu)、施藥，防治(zhi)松褐天牛(niu)(niu)，防治(zhi)總面積接(jie)近7萬畝。

松(song)(song)(song)(song)褐天(tian)牛(niu)是危害(hai)(hai)松(song)(song)(song)(song)樹的(de)主要(yao)蛀干害(hai)(hai)蟲(chong)，是松(song)(song)(song)(song)樹“頭號殺手”——松(song)(song)(song)(song)材(cai)線(xian)蟲(chong)病的(de)傳播媒介昆蟲(chong)。每(mei)年5月(yue)中(zhong)旬(xun)至7月(yue)中(zhong)旬(xun)是松(song)(song)(song)(song)褐天(tian)牛(niu)羽化(hua)盛期，此期間通(tong)過飛防作業，能有(you)效切斷(duan)松(song)(song)(song)(song)材(cai)線(xian)蟲(chong)病傳播鏈，遏制松(song)(song)(song)(song)褐天(tian)牛(niu)的(de)蟲(chong)口密度(du)和擴散范圍(wei)，從而(er)達到防止松(song)(song)(song)(song)材(cai)線(xian)蟲(chong)病擴散和蔓延的(de)目的(de)，可起到明顯防治效果。

采用無(wu)人(ren)機(ji)防(fang)治(zhi)松褐(he)天牛(niu)，對遏制松材(cai)線蟲(chong)病蔓延起到了積(ji)極作(zuo)用，進一步(bu)鞏固(gu)了松材(cai)線蟲(chong)病防(fang)控(kong)成效，確(que)保(bao)湖南省松樹資源(yuan)安全。飛防(fang)作(zuo)業(ye)(ye)運用專業(ye)(ye)無(wu)人(ren)機(ji)進行噴(pen)灑防(fang)治(zhi)作(zuo)業(ye)(ye)，具有飛行高(gao)(gao)度(du)低、噴(pen)藥精度(du)高(gao)(gao)、藥物浪費少、作(zuo)業(ye)(ye)效率高(gao)(gao)等(deng)優(you)點，組織(zhi)實施更靈活，更適宜(yi)于復(fu)雜(za)地形，解決了山高(gao)(gao)坡陡、人(ren)行不便等(deng)問(wen)題。此次(ci)防(fang)治(zhi)藥劑具有高(gao)(gao)效、環保(bao)、低毒(du)、持效期長的特點。（來源(yuan)：湖南省林業(ye)(ye)局）