changlexianbaochengjiedaoyushouguangshijitaizhenshigongpengzhongzhidejizhongquyu,jinnianzhongzhiminixiaonanguadecainongyousuozengjia。jinrijizhezaigaiquyucaifangshifaxianzhexiezhongzhiminixiaonanguadegongpengzhongpubianfashengleyizhongbinghai,rangcainongmendaweitouteng。
據了解,迷你小南瓜一般留5-6個ge幼you瓜gua,目mu的de是shi為wei了le防fang止zhi瓜gua長chang的de太tai大da,從cong而er降jiang低di其qi商shang品pin性xing,而er記ji者zhe發fa現xian在zai留liu下xia的de這zhe幾ji個ge瓜gua中zhong必bi有you一yi個ge會hui出chu現xian滿man身shen長chang黑hei毛mao的de情qing況kuang,一yi般ban是shi最zui上shang麵mian剛gang坐zuo住zhu的de那na個ge。病bing斑ban首shou先xian是shi從cong萎wei蔫nian的de花hua朵duo處chu開kai始shi出chu現xian,而er後hou從cong瓜gua蒂di浸jin入ru並bing逐zhu漸jian蔓man延yan到dao幼you果guo上shang,被bei害hai的de果guo實shi從cong頂ding部bu向xiang下xia腐fu爛lan,在zai病bing斑ban上shang長chang出chu濃nong密mi的de黑hei色se大da頭tou針zhen狀zhuang病bing菌jun孢bao子zi,使shi果guo實shi迅xun速su腐fu爛lan。
erhenduocainongfanying,tamenzaizhanhuayaozhongyijingjiaruleshileshilaiyufangbinghai,weishenmehaishihuifashengzhezhongqingkuangne?weicijizhezixunlebenbaozhuanjia,juzhuanjiajieshao,zhezhongbinghaichengweinanguaguofubing,youjiaohuafubing,qibingyuanjunshiguajimei,shijiehejunyamendeyileizhenjun,shileshiduizhenjunzhongdezinangjun、半知菌、擔子菌亞門的病原菌有較好的防效,因此點花藥中加的適樂時對南瓜果腐病的防效有限,不能夠阻止其發病。
防治方法:開花至幼果期噴灑78%波·錳鋅(科博)600倍液或86.2%氧化亞銅(銅大師)1000倍液、47%春·王銅(加瑞農)700倍液預防。發病初期噴灑72%錳鋅·霜脲(克露)600倍液或69%錳鋅·烯酰(安克錳鋅)700倍液、60%氟嗎·錳鋅(滅克)700-800倍液。當前隨著溫度的降低要特別注意控製棚室濕度,避免出現低溫高濕的情況,陰天如需用藥,提倡用百菌清煙劑,每畝250g。
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