youyudongjipengneidiwengaoshi，fashengbinghaihounanyufangzhi
，yushihenduocainongjiujiadayaojideshiyongnongdu，laizengqiangfangbingxiaoguo。cainongrenwei，yongyaonongduyuedazhibingxiaoguoyuehao，youqishizaibinghaigaofaqi，gengshichengbeijiadayongyaonongdu。

實shi踐jian證zheng明ming，加jia大da藥yao劑ji濃nong度du是shi可ke以yi提ti高gao防fang病bing效xiao果guo，但dan其qi產chan生sheng的de副fu作zuo用yong卻que不bu容rong忽hu視shi。如ru可ke以yi使shi病bing原yuan菌jun的de抗kang性xing產chan生sheng更geng快kuai
，加jia重zhong了le以yi後hou防fang治zhi病bing害hai的de難nan度du
；也(ye)容(rong)易(yi)發(fa)生(sheng)藥(yao)害(hai)，影(ying)響(xiang)了(le)作(zuo)物(wu)的(de)正(zheng)常(chang)生(sheng)長(chang)。所(suo)以(yi)
，菜(cai)農(nong)僅(jin)通(tong)過(guo)增(zeng)加(jia)藥(yao)劑(ji)的(de)使(shi)用(yong)量(liang)來(lai)進(jin)行(xing)病(bing)蟲(chong)害(hai)防(fang)治(zhi)是(shi)不(bu)可(ke)取(qu)的(de)。要(yao)防(fang)治(zhi)病(bing)蟲(chong)害(hai)，應(ying)該(gai)多(duo)種(zhong)方(fang)法(fa)並(bing)用(yong)、綜合防治才行。

首先是增強植株自身抗性。隨著蔬菜植株坐果越來越多，植株體內有機、無機營養缺乏
，抗病能力降低，遇到陰雨天時棚內氣溫、diwenjiangdi，genxishengchangshouzu
，zhizhushengchangbianruo，kangbingxingjiangdi，rongyishoubinghaiqinran。suoyiyaozhuyipeiyuzhuangke
，bunengliuguoguoduo，daozhizhizhuchuxianyingyanggongyingbuzuertuofeizaoshuai。

其(qi)次(ci)是(shi)創(chuang)造(zao)良(liang)好(hao)的(de)棚(peng)室(shi)環(huan)境(jing)。任(ren)何(he)病(bing)害(hai)都(dou)有(you)其(qi)適(shi)宜(yi)的(de)發(fa)病(bing)環(huan)境(jing)，隻(zhi)有(you)環(huan)境(jing)適(shi)宜(yi)，病(bing)害(hai)才(cai)可(ke)能(neng)暴(bao)發(fa)，如(ru)灰(hui)黴(mei)病(bing)在(zai)低(di)溫(wen)高(gao)濕(shi)的(de)季(ji)節(jie)發(fa)病(bing)重(zhong)，故(gu)冬(dong)季(ji)連(lian)陰(yin)天(tian)後(hou)常(chang)表(biao)現(xian)為(wei)暴(bao)發(fa)。因(yin)此(ci)
，防(fang)治(zhi)病(bing)害(hai)先(xian)要(yao)調(tiao)控(kong)好(hao)棚(peng)室(shi)環(huan)境(jing)，菜(cai)農(nong)可(ke)采(cai)取(qu)各(ge)項(xiang)措(cuo)施(shi)，避(bi)免(mian)棚(peng)內(nei)空(kong)氣(qi)濕(shi)度(du)長(chang)時(shi)間(jian)高(gao)於(yu)80%，減少病害侵染機會。同時，及時清除棚內的老葉、病葉，減少病原物，防止病害的侵染。

zaicishijiaotiyongyao。yizhongnongyaoshiyongdecishuyueduo，youqishilianxuyongyaoshi
，bingjunchanshengkangyaoxingdejilvyueda。henduonongyaozhonglei，suirankaishishiyongshixiaoguohenhao，danlianxuyonglemeiyoujici，xiaoguojiudadazhekou，birujiashuanglingdeng。suoyi

，cainongyingzuodaojiaotiyongyao，fangzhibingjunhenkuaichanshengkangyaoxing。rufangzhihuangguashuangmeibingshi，keyijiangshuangmeiweiyansuanyanyujiashuanglingmengxin
、烯酰嗎啉等交替使用。