近(jin)日(ri),記(ji)者(zhe)在(zai)壽(shou)光(guang)市(shi)孫(sun)家(jia)集(ji)街(jie)道(dao)小(xiao)店(dian)鋪(pu)村(cun)采(cai)訪(fang)時(shi),有(you)不(bu)少(shao)農(nong)戶(hu)向(xiang)記(ji)者(zhe)反(fan)映(ying)說(shuo),近(jin)段(duan)時(shi)間(jian),棚(peng)裏(li)的(de)黃(huang)瓜(gua)長(chang)勢(shi)差(cha),且(qie)所(suo)結(jie)的(de)黃(huang)瓜(gua)不(bu)亮(liang),發(fa)烏(wu),長(chang)得(de)也(ye)慢(man),另(ling)外(wai),還(hai)有(you)的(de)出(chu)現(xian)了(le)爛(lan)根(gen)、死棵現象。
記者調查後發現,他們的黃瓜是靠接的,現在又在接穗上紮了不定根,並且病株的感病侵染部位都是不定根上。
記者分析認為,嫁接黃瓜結瓜期接穗再紮根的原因有三:一是該地農戶在黃瓜嫁接苗定植後吊蔓前,沒有再一次修根斷根或者斷根不徹底;二是嫁接苗定植時,埋坨太深,導致接穗著地,再紮根;三san是shi黃huang瓜gua進jin入ru結jie瓜gua期qi後hou,隨sui著zhe落luo蔓man次ci數shu增zeng多duo,莖jing蔓man接jie觸chu地di表biao後hou,高gao濕shi環huan境jing促cu使shi接jie穗sui黃huang瓜gua再zai紮zha根gen。該gai階jie段duan,一yi旦dan嫁jia接jie黃huang瓜gua接jie穗sui再zai紮zha根gen,不bu僅jin影ying響xiang黃huang瓜gua長chang勢shi,瓜gua條tiao品pin質zhi降jiang低di,而er且qie冬dong季ji地di溫wen低di,在zai地di膜mo之zhi下xia,低di溫wen高gao濕shi的de環huan境jing易yi導dao致zhi接jie穗sui黃huang瓜gua感gan染ran枯ku萎wei病bing等deng根gen部bu病bing害hai,失shi去qu嫁jia接jie的de意yi義yi。
zaici,jizhetixingcainongpengyouyaozhuyifangzhijiajiehuangguajieguaqijiesuizaizhagenranbing。yufangbanfa,kaojiemiaodingzhihoudiaomanqian,tizaojinxingyicichedidexiugenduangenchuli,yihouluomanshi,keyongmugunhuozhupijianghuangguajingmandanfangzaidimozhishang,bimianjingmanjiechudaodibiaozaizhagen。ruoxianzainonghufaxianzijiadejiesuihuangguazhalegen,jianyizaiyiciduangen。tixingnonghu,weileyufanghuangguazhizhuzaiduangenhoufashengweinian,kexuanzezaixiawu3點以後進行斷根處理,並接著向黃瓜根部噴施一下預防性藥劑,如百菌清加鏈黴素,謹防斷根形成傷口,再感染病害。
手機版




