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虫害:榛实象鼻虫

虫害:榛实象鼻虫

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crybeto官方网站_靠(kao)谱:榛实象鼻虫

crybeto官方网(wang)站_靠谱:又名:榛实象甲、榛实象

crybeto官方网站_靠谱(pu):1、散布与风险部(bu)位 

crybeto官(guan)方(fang)网站_靠谱:榛实象鼻(bi)虫属(shu)鞘翅目象甲科,首(shou)要(yao)散布于(yu)辽(liao)宁(ning)、吉林(lin)、黑龙江、北京、内蒙古等地。 

榛实象鼻虫(chong)(chong)幼(you)虫(chong)(chong)专风(feng)险榛树的(de)果实,成虫(chong)(chong)补充养(yang)分时取食榛叶(ye)、果苞和(he)新苗,严峻影响(xiang)榛子的(de)产量。接近野生榛子的(de)山(shan)地榛园风(feng)险重。

在(zai)辽宁2年(nian)产(chan)生1代(dai)(dai),多数为(wei)(wei)3年(nian)1代(dai)(dai)。该虫(chong)(chong)(chong)(chong)(chong)以成(cheng)虫(chong)(chong)(chong)(chong)(chong)取食(shi)(shi)新(xin)苗、嫩(nen)叶(ye)(ye)、嫩(nen)枝(zhi),使新(xin)苗完(wan)整(zheng)不全(quan),嫩(nen)叶(ye)(ye)呈(cheng)(cheng)针孔状、嫩(nen)枝(zhi)折断,影响(xiang)新(xin)梢发(fa)展。成(cheng)虫(chong)(chong)(chong)(chong)(chong)还能够颀长头(tou)管刺入(ru)幼(you)(you)果(guo)(guo)(guo),蛀(zhu)食(shi)(shi)幼(you)(you)果(guo)(guo)(guo)内(nei)的(de)幼(you)(you)胚,果(guo)(guo)(guo)内(nei)构成(cheng)棕褐色(se)干缩状物,幼(you)(you)胚遏制发(fa)育(yu),果(guo)(guo)(guo)实早期零落,幼(you)(you)虫(chong)(chong)(chong)(chong)(chong)蛀(zhu)入(ru)果(guo)(guo)(guo)实则将蛀(zhu)食(shi)(shi)榛仁局(ju)部或(huo)全(quan)数吃(chi)掉,并将粪便排在(zai)果(guo)(guo)(guo)内(nei)。 幼(you)(you)虫(chong)(chong)(chong)(chong)(chong)及成(cheng)虫(chong)(chong)(chong)(chong)(chong)在(zai)土(tu)中(zhong)越冬(dong)。翌(yi)年(nian)5月(yue)(yue)上(shang)旬(xun)(xun)(xun)(xun)出(chu)土(tu),起头(tou)在(zai)枯(ku)枝(zhi)落叶(ye)(ye)层(ceng)下(xia)(xia)勾当(dang),5月(yue)(yue)中(zhong)旬(xun)(xun)(xun)(xun)成(cheng)虫(chong)(chong)(chong)(chong)(chong)上(shang)树,起头(tou)取食(shi)(shi)嫩(nen)叶(ye)(ye),5月(yue)(yue)下(xia)(xia)旬(xun)(xun)(xun)(xun)成(cheng)虫(chong)(chong)(chong)(chong)(chong)进入(ru)盛(sheng)(sheng)(sheng)期。,6月(yue)(yue)中(zhong)下(xia)(xia)旬(xun)(xun)(xun)(xun)为(wei)(wei)榛子幼(you)(you)果(guo)(guo)(guo)发(fa)育(yu)期,此时成(cheng)虫(chong)(chong)(chong)(chong)(chong)起头(tou)交尾,产(chan)卵于(yu)幼(you)(you)果(guo)(guo)(guo)内(nei)。7月(yue)(yue)上(shang)中(zhong)旬(xun)(xun)(xun)(xun)为(wei)(wei)产(chan)卵盛(sheng)(sheng)(sheng)期,卵期为(wei)(wei)10~14天。于(yu)7月(yue)(yue)上(shang)旬(xun)(xun)(xun)(xun)在(zai)果(guo)(guo)(guo)内(nei)孵化(hua)成(cheng)幼(you)(you)虫(chong)(chong)(chong)(chong)(chong),7月(yue)(yue)中(zhong)下(xia)(xia)旬(xun)(xun)(xun)(xun)为(wei)(wei)孵化(hua)盛(sheng)(sheng)(sheng)期,幼(you)(you)虫(chong)(chong)(chong)(chong)(chong)在(zai)果(guo)(guo)(guo)内(nei)取食(shi)(shi)近(jin)1个月(yue)(yue),则发(fa)育(yu)成(cheng)老(lao)熟幼(you)(you)虫(chong)(chong)(chong)(chong)(chong)。8月(yue)(yue)上(shang)旬(xun)(xun)(xun)(xun),当(dang)榛果(guo)(guo)(guo)日益成(cheng)熟时,老(lao)熟幼(you)(you)虫(chong)(chong)(chong)(chong)(chong)随果(guo)(guo)(guo)坠落至地,脱(tuo)果(guo)(guo)(guo)后钻入(ru)土(tu)中(zhong)20~30cm深处筹(chou)办越冬(dong)。8月(yue)(yue)中(zhong)下(xia)(xia)旬(xun)(xun)(xun)(xun)为(wei)(wei)入(ru)土(tu)盛(sheng)(sheng)(sheng)期。第三年(nian)7月(yue)(yue)上(shang)旬(xun)(xun)(xun)(xun)起头(tou)化(hua)蛹,7月(yue)(yue)下(xia)(xia)旬(xun)(xun)(xun)(xun)进入(ru)化(hua)蛹盛(sheng)(sheng)(sheng)期,蛹期为(wei)(wei)半(ban)月(yue)(yue)摆布,7月(yue)(yue)中(zhong)旬(xun)(xun)(xun)(xun)起头(tou)呈(cheng)(cheng)现新(xin)成(cheng)虫(chong)(chong)(chong)(chong)(chong),8月(yue)(yue)上(shang)中(zhong)旬(xun)(xun)(xun)(xun)为(wei)(wei)成(cheng)虫(chong)(chong)(chong)(chong)(chong)成(cheng)仙(xian)盛(sheng)(sheng)(sheng)期。新(xin)成(cheng)仙(xian)的(de),成(cheng)虫(chong)(chong)(chong)(chong)(chong)昔时不出(chu)土(tu),即转(zhuan)入(ru)越冬(dong)状况(kuang)。 

crybeto官方网站_靠谱:2、防(fang)治体例 

榛实象鼻虫产生面广,糊口(kou)史长而庞杂(za),世代(dai)堆(dui)叠瓜代(dai)产生。是以(yi),纯真(zhen)用化学(xue)药剂防治(zhi)(zhi)不能获得抱负的结(jie)果,必须采用综合防治(zhi)(zhi)。 

(1)在成虫(chong)产(chan)卵前的(de)补充养(yang)分期及产(chan)卵早(zao)期,即5月(yue)中(zhong)旬到7月(yue)上旬用(yong)37%杀虫(chong)宝乳(ru)油800~1000倍或40%杀虫(chong)蜱乳(ru)油1000倍或20%(桃小灵)乳(ru)油1000倍,对榛园停止周(zhou)全喷洒,共喷施2~3次,距(ju)离(li)时(shi)候15天。或用(yong)50%腈松(song)乳(ru)剂(ji)(ji)和(he)50%氯丹乳(ru)剂(ji)(ji),以1:4的(de)比例夹杂用(yong)400倍液喷洒,鸩杀成虫(chong)。于幼虫(chong)脱果前及虫(chong)果零落期即7月(yue)下(xia)旬至8月(yue)中(zhong)旬,在空中(zhong)上撒4%D-N(敌百(bai)虫(chong)、马拉硫磷合(he)剂(ji)(ji),又叫敌马合(he)剂(ji)(ji)、敌抗合(he)剂(ji)(ji))粉剂(ji)(ji)鸩杀脱果幼虫(chong),每亩(mu)用(yong)药量为1.5~2kg.

(2)在周全集合采收(shou)果实时,集合覆灭(mie)脱果幼(you)虫。详细体例:在幼(you)虫未脱果前采摘(zhai)果实,而后集合堆放在清(qing)洁的水泥(ni)空中(zhong)或(huo)木板上(shang),幼(you)虫脱果后集合覆灭(mie)。对虫果严峻,产量低(di)已无采收(shou)食用代价的,能够提早于8月上(shang)旬至(zhi)8月下(xia)旬采果后,集合覆灭(mie)。 

crybeto官方网站_靠谱(pu):(3)野生捡除落地虫(chong)果集(ji)合覆灭老(lao)熟幼虫(chong)。 

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