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如何正确使用除草剂

文章编辑:【本站】发布日期:2017/04/26 13:26:36

影响除草剂药效的因素

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温度

QIWENGAOYOULIYUCHUCAOJIBEIZACAOXISHOU,ZUOYONGXIAOGUOHAO。(DANBUSHIQIWENYUEGAOYUEHAO)QIWENGUOGAO,**DEWUZHUANGYEHENKUAIBEIZHENGFA,TEBIEDUIYIXIEYIHUIFADECHUCAOJIJIJIANGUANGFENJIEDECHUCAOJI,HUIJIANGDICHUCAOXIAOGUO,RU2.4-D、FULELING、HEDAZHUANG、ERJIASILVDENG,HAIHUIYINHUIFAPIAOYIDAOZHOUWEIMINGANZUOWUSHANGCHANSHENGYAOHAI。QIWENGUODISHISHIYONGPUCAOJING,ZHIWUDUIQIBUNENGJISHIJIANGJIE,RONGYIFASHENGYAOHAI。ZHENGQUEDESHIYAOYINGWEI:GAOWENJIJIE,QINGERWUFENGDESHANGWU10DIANQIANJIXIAWU6DIANYIHOU;DIWENJIJIEYIZAISHANGWU10DIANZHIXIAWU3DIANZHIJIAN。

空气湿度

一般来说,空气湿度大有利于除草剂被杂草吸收,作用效果好。最好的时机是,叶面无露水、无雨水,而且空气湿度在60%以上。干热季节如过于干旱,则不要施药。

土壤水分

TURANGSHUIFENCHONGZU,ZUOWUHEZACAOSHENGZHANGWANGSHENG,YOULIYUZUOWUDUIYAOJIDEFENJIEHEZACAODUIYAOJIDEXISHOUBINGZAITINEICHUANDAOYUNSHU,CONGERDADAOZUIJIACHUCAOXIAOGUO,YOUQISHITURANGCHULIJIBIXUYOUTURANGSHIRUNTIAOJIANCAINENGFAHUILIANGHAODEYAOXIAO。RUTURANGGANHAN,ZUOWUHEZACAOSHENGZHANGHUANMAN,ZUOWUNAIXINGCHA,BINGYOULIYUZACAOJINGYEXINGCHENGJIAOHOUDEJIAOZHICENG,YINGXIANGDUICHUCAOJIDEXISHOUCHUANDAO,CONGERSHICHUCAOJIYAOXIAOXIAJIANG。TONGSHIZACAOWEILESHIYINGGANHANHUANJING,DABUFENMAOKONGGUANBI,YINGXIANGYAOJIDEXISHOU,GENXIGENGJIAFADA,ZENGJIAFANGCHUNANDU。YINCI,GANHANDETIANQI,TUIJIANGAOXIANLIANG,TONGSHISHIYAOSHIYAOJIADAPENSHUILIANG。

降水

SHIYAOHOUBUJIUJIJIANGYU,YAOYERONGYIBEICHONGSHUA,YINGXIANGYAOXIAO。

土壤pH值

DANGpHZHIZAI5.5~7.5SHIDABUFENCHUCAOJINENGJIAOHAODIFAHUIZUOYONG,GUOSUANGUOJIANDETURANGDUIMOUXIECHUCAOJIHUIQIDAOFENJIEZUOYONG,CONGERYINGXIANGYAOXIAO。RUTURANGFENGBICHUCAOJIWEISUANXING,ZAIYANJIANDIZHONGFENGBICHUCAOXIAOGUOCHASHENZHIWUXIAOGUO。YOURULVHUANGLONGZAISUANXINGTURANGZHONGJIANGJIESUDUKUAI,YINGXIANGYAOXIAO,ZAIJIANXINGTURANGZHONGJIANGJIESUDUMAN,DUIHOUCHAMINGANZUOWUYIZAOCHENGYAOHAI。

土壤质地和有机质含量

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水质指施药时所兑水的硬度和酸碱度。硬度指100毫升水中所含Ca2+、Mg2+离子的多少。由于某些除草剂的有效成份容易同这两种离子络合生成盐而被固定,所以硬度大的水质可能会使除草剂药效下降。具有酸碱性的农药掺入了碱性较高或酸性较高的水,会影响药剂的稳定性,从而降低除草效果。

风速

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草龄

甘肃快3走势图 ZACAOZAI2~3YEQIWEIZUIJIAFANGZHIQI。ZACAOCAOLINGGUODA,KANGXINGZENGDA,YONGYAOLIANGBIXUSHILIANGJIADA。

光照

BAICAOKU、CHUCAOMI、BANDINONGDENGDOUSHIGUANGHUOHUAXINGCHUCAOJI,ZAIGUANGDEZUOYONGXIACAIQISHACAOZUOYONG。XIMAJIN、DICAOLONG、PUCAOJINGDENGGUANGHEZUOYONGYIZHIJI,YEXUZAIYOUGUANGDEQINGKUANGXIACAINENGYIZHIZACAOGUANGHEZUOYONG,FAHUICHUCAOXIAOGUO。FULELINGDENGSHIYUTUBIAOYIHUIFA,JIANGUANGYIFENJIE,SHIYONGSHIXUJISHIYUBIAOCENGTUHUNBAN。

采用正确的施药方式 

WAIJIEYINSUYINGXIANGZHECHUCAOJIDEYAOXIAO,DANSHISHIYONGFANGFADEBUDUILUTONGYANGYEHUISHIXIAOGUODADAZHEKOU。

正确选择除草剂

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同时,选择除草剂应掌握以下原则:

甘肃快3走势图 YI、GOUYAOYAODUILU,YINGGENJUDANGCHAZUOWUJITIANJIANZACAOFASHENGDEZHONGLEI,JIEHESHIYONGFANGFALAIGOUYAO。

ER、DAOZHENGGUINONGYAOXIAOSHOUBUMENGOUMAICHUCAOJI,ZAIDUICAOHAIQINGKUANGHESHIYONGQINGKUANGCUNZAIYIWENDEQIANTIXIA,YINGDAODANGDINONGJIBUMENJINXINGHUACHUJISHUZIXUN。

规范施药技术

SHIYAOSHIQIDEXUANZE、SHIYAONONGDU、SHIYAOQIJUDENGDOUSHIZHIDEZHUYIDEDIFANG。

施药适期:不同的除草剂对杂草生育期要求不同,有的是播后苗前杂草种子萌发时药效最好;有的是出苗到2叶1心期处理药效最好;有的对3~5叶期杂草仍有良好的防除效果。对茎叶处理剂而言,幼苗期(3叶期限前)防除效果较好,随着草龄增大,效果将有不同程度降低。生产实践中应根据不同除草剂的特性选择杂草敏感的生育期施药。

施药量:按照实际用药面积准确计算用药和称量药剂。在喷、撒时,无论土壤处理还是茎叶处理,均要喷、撒均匀,不可重喷或漏喷。 

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