玉米如何防治病蟲害的發生
beifangzuoweiwoguoyumizhongzhidezhongyaodiqu,zaiwoguoliangshijiegouzhongyouqifeichangzhongyaodezuoyong。yumishichangjiandehanzuojingjizuowu,qibinghaiyimiaokubingweizhu,yejiushiwomenchangjiandegenfubing,yanzhongshiyouyayehuifashengfulansiwang。miaokubingfashengtongchangshiyouyuzhongzidaijun。
玉米地害蟲主要以蠐螬、金針蟲、地老虎、螻蛄等為主,地表害蟲有旋心蟲、葉甲、美洲斑潛蠅等。
春季低溫多雨年份、沙質土壤、有機質含量低、土壤板結較重和重氮肥、少磷鉀肥地塊相對較重;播種過深、出苗期延長,也相對嚴重。根腐病及花白苗、紅葉病及絲黑穗病也時有發生。
如ru果guo玉yu米mi種zhong子zi未wei采cai取qu種zhong衣yi劑ji包bao衣yi,那na麼me該gai地di塊kuai容rong易yi遭zao受shou地di下xia害hai蟲chong的de禍huo害hai而er造zao成cheng缺que苗miao的de發fa生sheng。種zhong衣yi劑ji中zhong含han有you兩liang種zhong或huo兩liang種zhong以yi上shang的de殺sha菌jun殺sha蟲chong劑ji如ru呋fu福fu戊wu(克福戊)種zhong衣yi劑ji。包bao衣yi種zhong子zi播bo入ru土tu壤rang後hou,在zai其qi種zhong子zi周zhou圍wei的de土tu壤rang環huan境jing裏li會hui形xing成cheng藥yao環huan境jing,地di下xia害hai蟲chong一yi旦dan進jin入ru到dao這zhe種zhong藥yao環huan境jing中zhong,就jiu會hui觸chu殺sha死si亡wang。種zhong衣yi劑ji包bao衣yi的de目mu的de也ye是shi為wei了le防fang止zhi玉yu米mi苗miao期qi病bing蟲chong害hai的de發fa生sheng,減jian少shao經jing濟ji損sun失shi。
yumimiaokubinghesiheisuibingdoushizaiyaqiqinran,erfumeishuanghewuzuochundengyaojinengyizhiqiqinran,jianqingbinghaidefashenghuodadaobufashengdemude。zaihaichongjiaozhongdedikuai,yinggaigenjuqiwenjiturangshangqing,helicaiqunongyaoguangenchuli,yekeyisuifenfeisashidutu,tongguozengshilin、鉀肥減輕苗病的發生。中國糧油儀器網 http://www.98fo.cn/



