xiajigaowentianqijiaoduo,dapengqieguoleishucaichanghuichuxianrizhuoxianxiang。qizhongyijiaoleishucaizuiyifasheng,jiaoguobeiqiangguangzhuoshanghou,changhuizaiguoshixiangyangmianchuxianfulan,gangkaishishiguoshibingbuchengxianheihese,ranhoubingbuzhujianbianhese,zuihouguoshibingbuhuibianchengbaise,houlvekuoda,baisehuoqianhese,picengbianbo,zuzhihuaisi,cihouyishouzhenjunqinran,fashengailideheimeibing,shidudashiyechangyinzhixijunqinranerchuxianzhenggeguoshifulan,shiqushangpinjiazhi。因此,在夏季一定要提前做好防護措施,嚴防茄果類蔬菜日灼病的發生。主要應做到以下幾點:
一、jiaqiangfangfenglidu。xiajibaitianwendujiaogaoshi,yaobadapengshangbuheqianlianchudefangfengkouquandakai,jiaqiangfangfeng,yicibapengneidewendujiangxialai。fangfengkoulakaihou,yaozhuyibatiaojiefengkoudelashengshuanlao,yimianrenlikaihoufengbafangfengkouguabi,congerchanshenggaowenweihai。
二、shezhizheyangwang。gaowentianqiyingjishizaipengdingshangshezhizheyangwang,yijiangdipengneiguangzhaoqiangdu。danyaozhuyizheyangwangbunengquantianfugai,yimianpengneiguangzhaobuzu。yibanzheyangwangyingzaishangwu10點以後和下午3點以前設置為宜。在雨後轉晴的天氣,日灼病最易發生,因此雨後突然晴天後,要及時遮好遮陽網,以防日灼病的發生。
三、helishuye。xiajiqieguoleishucaiyingqingshuye,shiguoshijinkenengdiyinzangzaiyezidixia,bimianyangguangzhishe。zhizhudewaiweiyepianbunengshuchu,danneitangyepianyaoshuchu,yizengjiazhizhuneidetouqixing。xutebiezhuyideshi:在整技、抹杈、shuyehou,guoshichanghuiyinturanbaoluzaiyangguangxiaerfashengrizhuobing。yinci,qieguoleishucaizaigaowentianqijinxingshangshucaozuoshi,yidingyaobimianzaizhongwuqiangguanggaowenxiajinxing,zuihaoxuanzaixiawu3點以後較合適。另外,越夏蔬菜定植時株行距應密一些,使莖葉互相掩蔽,避免果實受陽光直接照射。
四、及時澆水。在棚內溫度過高、土壤土分蒸發量大的情況下,一定要注意及時澆水,保證蔬菜充足的水分供應,以免發生日灼。
五、jishibuchongzhongweiliangyuansu。zaiguoshikaishipengdashi,ruguogaimeipengxinmengtiemudengzhongweiliangyingyangyuansubuzuyehuidaozhiguopinaiguangxingxiajiang,yincirongyichuxianrizhuobing。yinci,xiajiqieguoleishucaiyingjishibuchonghanzhongweiliangyuansudeyemianfei,yekeyemianpensaruilvhuoruipeigaihuoruipeiledenghuolvfenwei2號葉麵肥等,可促進果實對日灼病的抵抗能力,減少日灼病的發生。
六、發現病果後,要及時摘除,防止因棚內濕度過高而導致其他病菌在傷口處侵染。對於感染病菌的果實,應及時用1000倍液的百菌清葉麵噴灑防治。
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