
當前(qian),正值(zhi)空(kong)心(xin)(xin)菜育種田從營養(yang)生(sheng)(sheng)(sheng)長(chang)轉入生(sheng)(sheng)(sheng)殖(zhi)生(sheng)(sheng)(sheng)長(chang)階段,抗病(bing)(bing)力下降,極有利于空(kong)心(xin)(xin)菜病(bing)(bing)害(hai)發生(sheng)(sheng)(sheng)。據近日東廈鎮主產區(qu)調查,空(kong)心(xin)(xin)菜發生(sheng)(sheng)(sheng)病(bing)(bing)害(hai)有葉(xie)斑(ban)病(bing)(bing)和白銹(xiu)病(bing)(bing),葉(xie)斑(ban)病(bing)(bing)主要為(wei)害(hai)葉(xie)片,造成枯(ku)斑(ban),嚴重時導致落(luo)葉(xie),對空(kong)心(xin)(xin)菜生(sheng)(sheng)(sheng)長(chang)影響(xiang)極大,目前(qian)一般病(bing)(bing)葉(xie)率在3-11%,超過防治指標應開(kai)展防治。白銹(xiu)病(bing)(bing)可為(wei)害(hai)空(kong)心(xin)(xin)菜葉(xie)片和枝桿(gan),造成銹(xiu)斑(ban),目前(qian)雖(sui)只零星發生(sheng)(sheng)(sheng),但該病(bing)(bing)發生(sheng)(sheng)(sheng)傳染較快,也應注意防治。
防治(zhi)葉斑病的藥(yao)劑可選(xuan)(xuan)用30%愛苗(miao)2000倍(bei)(bei)液或(huo)20%三環唑1000倍(bei)(bei)液噴霧。防治(zhi)白銹病可選(xuan)(xuan)用20%腈菌(jun)唑500倍(bei)(bei)液或(huo)30%粉(fen)銹寧500倍(bei)(bei)液噴霧。