小麥種植中應該如何防止吸漿蟲
zaixiaomaideshengchanzhongzhizhong,jingchanghuizaoshouchonghaidekunrao,erxiaomaixijiangchongzaiyouchonghechengchonghoudouduixiaomaiweihaijida,suoyifangzhixijiangchongyeshirangnongminpengyouhenkunaodeyigewenti。
小xiao麥mai吸xi漿jiang蟲chong一yi般ban每mei年nian發fa生sheng一yi代dai,以yi老lao熟shu幼you蟲chong結jie圓yuan繭jian在zai土tu中zhong越yue冬dong。小xiao麥mai吸xi漿jiang蟲chong在zai幼you蟲chong時shi期qi,會hui附fu著zhe於yu灌guan漿jiang期qi的de麥mai粒li嫩nen皮pi上shang,吸xi食shi麥mai粒li中zhong的de漿jiang汁zhi,從cong而er造zao成cheng嚴yan重zhong減jian產chan。次ci春chun當dang小xiao麥mai返fan青qing、起身時,幼蟲即自繭內爬出並在到表土層準備化蛹,至小麥孕穗時則開始結繭化蛹。若濕度偏低、溫度較高,幼蟲多不結繭而直接在土中化成裸蛹。蛹期一般有8~10天,至抽穗時即羽化為成蟲。
小麥吸漿蟲的防治應該結合小麥地的實際情況,一般在蛹盛期,可以采取撒毒土防治,如每畝可用3%甲基異柳磷顆粒劑或3%辛硫磷顆粒劑等2~3公斤,拌細土20~25公gong斤jin,於yu露lu水shui幹gan後hou均jun勻yun撒sa施shi,及ji時shi用yong掃sao帚zhou或huo其qi他ta工gong具ju將jiang架jia在zai麥mai株zhu上shang的de毒du土tu抖dou落luo到dao土tu壤rang表biao麵mian,施shi藥yao後hou灌guan水shui或huo搶qiang在zai雨yu前qian施shi藥yao效xiao果guo更geng好hao。蛹yong期qi防fang治zhi可ke以yi有you效xiao地di壓ya低di蟲chong口kou密mi度du,要yao進jin行xing統tong防fang統tong治zhi和he結jie合he麥mai穗sui藥yao劑ji保bao護hu,以yi防fang止zhi飛fei來lai成cheng蟲chong。
在zai在zai小xiao麥mai抽chou穗sui期qi,是shi防fang治zhi小xiao麥mai吸xi漿jiang蟲chong的de關guan鍵jian時shi期qi,可ke以yi采cai取qu噴pen藥yao防fang治zhi的de措cuo施shi。由you於yu這zhe個ge時shi期qi短duan,但dan是shi確que實shi小xiao麥mai產chan量liang的de關guan鍵jian時shi期qi,所suo以yi必bi須xu抓zhua住zhu時shi機ji進jin行xing噴pen藥yao,阻zu止zhi或huo殺sha死si飛fei來lai成cheng蟲chong,或huo殺sha死si其qi產chan在zai穗sui上shang的de卵luan。若ruo進jin入ru揚yang花hua期qi才cai噴pen藥yao,因yin抽chou穗sui時shi穗sui上shang的de卵luan已yi經jing孵fu化hua成cheng幼you蟲chong鑽zuan入ru小xiao穗sui中zhong,很hen難nan被bei殺sha死si。具ju體ti用yong藥yao方fang法fa是shi在zai小xiao麥mai抽chou穗sui70%時進行噴藥,每畝可選用48%毒死蜱乳油、10%吡蟲啉可濕性粉劑、4.5%高效氯氰菊酯乳油等1500~2000倍液噴霧。噴霧於上午9時前或下午5時後進行,在蟲口密度大的田塊,經2~3天抽齊穗時再噴藥1次。中國糧油儀器網 http://www.98fo.cn/



