據各地近期調(diao)查，荔枝(zhi)病(bing)(bing)(bing)蟲(chong)(chong)總體中(zhong)等(deng)發生，發生病(bing)(bing)(bing)蟲(chong)(chong)有：荔枝(zhi)蒂蛀蟲(chong)(chong)和(he)荔枝(zhi)霜(shuang)疫霉病(bing)(bing)(bing)，荔枝(zhi)癭螨(man)、金龜子、尺(chi)蠖、炭疽病(bing)(bing)(bing)等(deng)也有不同程度發生。
荔(li)枝蒂蛀(zhu)(zhu)蟲(chong)：在(zai)早、中熟品(pin)(pin)種上中等(deng)、局部(bu)偏(pian)重發生(sheng)，發生(sheng)期早于常年。高(gao)州站調(diao)查(cha)(cha)，蒂蛀(zhu)(zhu)蟲(chong)發生(sheng)期比去(qu)年早12 天，早熟品(pin)(pin)種三月紅(hong)落地果(guo)蛀(zhu)(zhu)果(guo)率(lv)平(ping)均(jun)(jun)13.9%，高(gao)的(de)61%，百果(guo)蟲(chong)量平(ping)均(jun)(jun)13.2頭(tou)，高(gao)的(de)59.9頭(tou)；廉(lian)江站調(diao)查(cha)(cha)，早熟品(pin)(pin)種落地果(guo)蛀(zhu)(zhu)果(guo)率(lv)平(ping)均(jun)(jun)13.4%，高(gao)的(de)58.6%，百果(guo)蟲(chong)量平(ping)均(jun)(jun)9.2頭(tou)，高(gao)的(de)49.2頭(tou)；增城站調(diao)查(cha)(cha)，三月紅(hong)落地果(guo)蛀(zhu)(zhu)果(guo)率(lv)65.5%，百果(guo)蟲(chong)量17頭(tou)。
荔枝癭螨：中(zhong)等發(fa)生。新興(xing)站調查，花穗(sui)受害率(lv)平(ping)均3.6%，最(zui)高的達20%；寶安(an)站調查遲熟品種桂味，葉受害率(lv)12%。
荔(li)枝(zhi)霜疫霉(mei)病(bing)(bing)(bing)(bing)：中(zhong)(zhong)等發(fa)生。3月中(zhong)(zhong)旬(xun)以來，冷暖氣流交替(ti)頻繁，全省出現大(da)范圍(wei)降雨，荔(li)枝(zhi)霜疫霉(mei)病(bing)(bing)(bing)(bing)開(kai)始發(fa)病(bing)(bing)(bing)(bing)，個別地區果(guo)園(yuan)發(fa)病(bing)(bing)(bing)(bing)較重。高州站(zhan)調查，早熟品(pin)(pin)種(zhong)，三月紅病(bing)(bing)(bing)(bing)果(guo)率(lv)平(ping)均(jun)1.13%，中(zhong)(zhong)熟品(pin)(pin)種(zhong)黑(hei)葉病(bing)(bing)(bing)(bing)果(guo)率(lv)平(ping)均(jun)0.77%；信宜站(zhan)調查，病(bing)(bing)(bing)(bing)果(guo)率(lv)平(ping)均(jun)3.11%，高的8.26%。
當前，我(wo)省(sheng)荔枝(zhi)(zhi)(zhi)早(zao)、中(zhong)熟品種(zhong)(zhong)處(chu)于(yu)膨大期至轉色期，遲(chi)熟荔枝(zhi)(zhi)(zhi)品種(zhong)(zhong)處(chu)于(yu)幼果(guo)期，早(zao)、中(zhong)、遲(chi)熟品種(zhong)(zhong)混(hun)栽現象較普遍，失管果(guo)園較多，利(li)于(yu)荔枝(zhi)(zhi)(zhi)蒂(di)蛀蟲(chong)輾轉為害。據省(sheng)氣(qi)候中(zhong)心預測(ce)：4月，粵東(dong)及南(nan)部(bu)沿海等地(di)區(qu)平均雨量較常年偏(pian)(pian)(pian)少1～2成，其(qi)余(yu)地(di)區(qu)偏(pian)(pian)(pian)多1～2成，西南(nan)地(di)區(qu)平均氣(qi)溫較常年偏(pian)(pian)(pian)低0.1～0.3℃，其(qi)余(yu)大部(bu)分地(di)區(qu)偏(pian)(pian)(pian)高0.1～0.5℃。高溫高濕天氣(qi)利(li)于(yu)荔枝(zhi)(zhi)(zhi)蒂(di)蛀蟲(chong)、霜(shuang)疫霉病(bing)等病(bing)蟲(chong)暴發(fa)(fa)(fa)(fa)流行。預測(ce)荔枝(zhi)(zhi)(zhi)病(bing)蟲(chong)害將偏(pian)(pian)(pian)重(zhong)發(fa)(fa)(fa)(fa)生，其(qi)中(zhong)，第三(san)代(dai)荔枝(zhi)(zhi)(zhi)蒂(di)蛀蟲(chong)在早(zao)、中(zhong)熟品種(zhong)(zhong)上(shang)偏(pian)(pian)(pian)重(zhong)發(fa)(fa)(fa)(fa)生，成蟲(chong)高峰期由南(nan)至北依次出現在4月中(zhong)旬至5月初；荔枝(zhi)(zhi)(zhi)癭螨(man)、荔枝(zhi)(zhi)(zhi)霜(shuang)疫霉病(bing)中(zhong)等、局部(bu)偏(pian)(pian)(pian)重(zhong)發(fa)(fa)(fa)(fa)生。
各級(ji)植保部(bu)門要加強田間調查監測(ce)，準(zhun)確(que)掌握荔(li)(li)(li)枝病(bing)(bing)蟲(chong)(chong)發生動態，及時發布病(bing)(bing)蟲(chong)(chong)預報，分類指導果農做(zuo)好防(fang)(fang)(fang)治(zhi)工作(zuo)，確(que)保荔(li)(li)(li)枝生產安全。一要抓準(zhun)防(fang)(fang)(fang)治(zhi)適(shi)期(qi)(qi)。防(fang)(fang)(fang)治(zhi)荔(li)(li)(li)枝蒂(di)蛀蟲(chong)(chong)要抓準(zhun)成蟲(chong)(chong)高(gao)峰期(qi)(qi)施(shi)藥(yao)(yao)，防(fang)(fang)(fang)治(zhi)荔(li)(li)(li)枝霜疫(yi)霉病(bing)(bing)要在發病(bing)(bing)初(chu)期(qi)(qi)施(shi)藥(yao)(yao)。二要選用(yong)對口藥(yao)(yao)劑。可選用(yong)除蟲(chong)(chong)脲、滅幼(you)脲或(huo)(huo)氟蟲(chong)(chong)脲等(deng)防(fang)(fang)(fang)治(zhi)荔(li)(li)(li)枝蒂(di)蛀蟲(chong)(chong)，選用(yong)噠螨(man)靈等(deng)防(fang)(fang)(fang)治(zhi)荔(li)(li)(li)枝癭螨(man)，選用(yong)代森(sen)錳鋅、烯酰嗎啉或(huo)(huo)嘧菌酯等(deng)防(fang)(fang)(fang)治(zhi)荔(li)(li)(li)枝霜疫(yi)霉病(bing)(bing)。
