最近,一些種植越夏西紅柿的菜農反映,近期西紅柿細菌性病害發生嚴重,如細菌性髓壞死、瘡chuang痂jia病bing和he潰kui瘍yang病bing等deng。在zai使shi用yong同tong一yi種zhong用yong藥yao方fang法fa進jin行xing防fang治zhi時shi,有you的de菜cai農nong反fan映ying效xiao果guo很hen好hao,而er有you些xie菜cai農nong則ze反fan映ying效xiao果guo卻que不bu理li想xiang。既ji然ran同tong是shi細xi菌jun性xing病bing害hai,為wei什shen麼me同tong樣yang用yong藥yao防fang治zhi效xiao果guo差cha別bie卻que這zhe麼me大da呢ne?
據(ju)筆(bi)者(zhe)了(le)解(jie),細(xi)菌(jun)可(ke)在(zai)西(xi)紅(hong)柿(shi)植(zhi)株(zhu)的(de)表(biao)皮(pi)或(huo)者(zhe)內(nei)部(bu)為(wei)害(hai),而(er)防(fang)治(zhi)細(xi)菌(jun)性(xing)病(bing)害(hai)的(de)藥(yao)劑(ji)又(you)分(fen)為(wei)觸(chu)殺(sha)性(xing)藥(yao)劑(ji)和(he)內(nei)吸(xi)性(xing)藥(yao)劑(ji)兩(liang)類(lei)。觸(chu)殺(sha)型(xing)藥(yao)劑(ji)主(zhu)要(yao)是(shi)指(zhi)銅(tong)製(zhi)劑(ji),內(nei)吸(xi)性(xing)藥(yao)劑(ji)則(ze)包(bao)括(kuo)抗(kang)生(sheng)素(su)類(lei)、葉枯唑等。所以,在防治時,針對西紅柿植株不同部位發生的細菌性病害,防治方法也有所不同。像西紅柿的瘡痂病、潰(kui)瘍(yang)病(bing)等(deng)病(bing)害(hai),細(xi)菌(jun)主(zhu)要(yao)在(zai)西(xi)紅(hong)柿(shi)的(de)表(biao)皮(pi)為(wei)害(hai),菜(cai)農(nong)可(ke)以(yi)使(shi)用(yong)銅(tong)製(zhi)劑(ji)等(deng)具(ju)有(you)觸(chu)殺(sha)性(xing)的(de)藥(yao)劑(ji)進(jin)行(xing)防(fang)治(zhi),效(xiao)果(guo)較(jiao)好(hao)。而(er)細(xi)菌(jun)性(xing)髓(sui)壞(huai)死(si)主(zhu)要(yao)是(shi)在(zai)西(xi)紅(hong)柿(shi)植(zhi)株(zhu)的(de)莖(jing)稈(gan)內(nei)部(bu)為(wei)害(hai),這(zhe)時(shi)如(ru)果(guo)再(zai)使(shi)用(yong)觸(chu)殺(sha)性(xing)的(de)銅(tong)製(zhi)劑(ji)等(deng)進(jin)行(xing)防(fang)治(zhi),效(xiao)果(guo)就(jiu)不(bu)理(li)想(xiang),菜(cai)農(nong)應(ying)使(shi)用(yong)具(ju)有(you)內(nei)吸(xi)性(xing)的(de)藥(yao)劑(ji),如(ru)農(nong)用(yong)鏈(lian)黴(mei)素(su)、葉枯唑、新植黴素等,效果較好。
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