茄子黃萎病俗稱半邊瘋、黑(hei)心(xin)病(bing),是(shi)茄(qie)子(zi)保(bao)護(hu)地(di)生(sheng)產(chan)栽(zai)培(pei)中(zhong)的(de)高(gao)發(fa)病(bing)害(hai),如(ru)果(guo)病(bing)害(hai)發(fa)生(sheng),治(zhi)療(liao)不(bu)及(ji)時(shi),常(chang)造(zao)成(cheng)大(da)麵(mian)積(ji)死(si)苗(miao),給(gei)生(sheng)產(chan)造(zao)成(cheng)很(hen)大(da)損(sun)失(shi)。現(xian)就(jiu)該(gai)病(bing)的(de)識(shi)別(bie)和(he)防(fang)治(zhi)介(jie)紹(shao)如(ru)下(xia)。
l、weihaitezheng。gaibingduozaimenqiezuozhuhoukaishifabing。yepianshouhaizuichucongzhizhuxiabuyepianganbing,yepianyemaihejinyebingyeyuanfahuang,yeyuanxiangshangweijuan,bingbanchangchuxianzaiyepianbanbian,yinqiyepianniuqu,zaochengyepianguanghezuoyongwufazhengchangjinxing。yanzhongshizhengzhuyepianfahuangweinian,zhidaokusituoluo。bingzhubiaoxianchuaixiao、枝葉不舒展的症狀,病果多小而彎曲。
2.發生原因。該病由半知菌亞門輪枝孢菌(真菌)侵(qin)染(ran)所(suo)致(zhi)。病(bing)菌(jun)多(duo)附(fu)生(sheng)在(zai)病(bing)葉(ye)病(bing)株(zhu)殘(can)體(ti)上(shang)在(zai)土(tu)壤(rang)中(zhong)越(yue)冬(dong),隨(sui)大(da)田(tian)施(shi)肥(fei)灌(guan)水(shui)等(deng)傳(chuan)播(bo),每(mei)年(nian)危(wei)害(hai)一(yi)次(ci)。病(bing)菌(jun)侵(qin)染(ran)多(duo)從(cong)定(ding)植(zhi)時(shi)根(gen)部(bu)造(zao)成(cheng)的(de)傷(shang)口(kou)入(ru)侵(qin)。低(di)溫(wen)(日平均氣溫15℃以下)高濕環境,重茬地塊,底肥不足田塊均易感病。
3、防治措施。(1)lunzuodaocha,zhongshijifei,tigaozaipeiturangfeili。qiezizaizhiyingyufeiqiekeleishucaishixingsinianyishanglunzuo,bingzengshiyouzhifushuyoujifeihefuhefei。zhuyipinghengshifei。(2)藥劑浸(拌)種。在進行種子催芽處理過程中,可用50%多菌靈可濕性粉劑500倍液浸種2小時,也可於播種時用藥劑處理苗床。(3)勤檢查,發現病株,及時拔除並集中棚外焚燒或深埋。(4)藥劑處理,定植緩苗後用50%甲托可濕性粉劑400倍液灌根,每株用藥0.3公斤,每10天灌藥液一次,連續用藥2-3次。
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