一般情況下,胃毒劑和觸殺劑受溫度的影響小些,內吸劑和熏蒸劑受溫度的影響大些。如敵殺死等農藥,低溫會明顯影響其殺蟲效果;ershiliuhejidengnongyao,zaijiaodiwenduxiashiyongrengnengfahuijiaohaodeshachongshajunxiaoguo。ciwai,lengtianshiyongchucaoji,qixianshixiaoguodeshijianbigaowenjijieshiyongyaochangdeduo。yinci,yongyaohouyaonaixindengdai,zhiyaoyaoyependaolewei,yibanbuxuzhongxinpenyao。
二、選擇晴天高溫時段用藥
zaiwandongzaochunqiwenjiaogaodeshiduan,haichongdequshiliangyuhuxiqiangdudayuyinlengtianqi,pendaochongtishangdeyaoyebeidaidaotineidexiangduiduoxie,youliyufahuidushazuoyong。
三、用藥量要適當
在zai夏xia季ji按an常chang規gui用yong量liang施shi藥yao,害hai蟲chong往wang往wang食shi藥yao而er死si亡wang。在zai晚wan冬dong早zao春chun天tian氣qi,由you於yu氣qi候hou因yin素su,農nong藥yao發fa揮hui藥yao效xiao較jiao慢man,因yin此ci,藥yao效xiao低di時shi可ke適shi當dang提ti高gao濃nong度du,具ju體ti根gen據ju氣qi溫wen高gao低di而er定ding,但dan一yi般ban不bu超chao過guo常chang規gui用yong藥yao量liang的de50%。
四、優先使用土農藥
土農藥如波爾多液、石硫合劑等,防治害蟲既經濟又有效,但要注意避免藥害。
五、注意農藥的安全間隔期
dongjihezaochunshiyongnongyao,nongyaodejiangjiesudubianman,nongyaozaizuowutineidecancunqiyexiangduiyanchang,fangzhizuowubingchonghaishi,yingtebiezhuyiyanchangnongyaodeanquanjiangeqi,yiquebaorentijiankang。
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