當(dang)前(qian)秋(qiu)茬(cha)黃(huang)瓜(gua)已(yi)經(jing)到(dao)了(le)盛(sheng)果(guo)期(qi),記(ji)者(zhe)在(zai)下(xia)鄉(xiang)采(cai)訪(fang)時(shi)發(fa)現(xian),隨(sui)著(zhe)氣(qi)溫(wen)的(de)降(jiang)低(di),不(bu)少(shao)菜(cai)農(nong)的(de)黃(huang)瓜(gua)出(chu)現(xian)了(le)早(zao)衰(shuai)的(de)情(qing)況(kuang),具(ju)體(ti)表(biao)現(xian)來(lai)看(kan),黃(huang)瓜(gua)葉(ye)片(pian)變(bian)得(de)凹(ao)凸(tu)不(bu)平(ping),上(shang)麵(mian)出(chu)現(xian)黃(huang)色(se)斑(ban)塊(kuai),在(zai)斑(ban)塊(kuai)底(di)部(bu)呈(cheng)現(xian)水(shui)漬(zi)狀(zhuang),並(bing)且(qie)黃(huang)瓜(gua)葉(ye)片(pian)從(cong)底(di)部(bu)迅(xun)速(su)向(xiang)上(shang)發(fa)展(zhan)變(bian)黃(huang)。果實生長減慢,並且瓜條上色不足,常呈現黃綠色果,出現黃葉的棵子上果實易彎果或化瓜,棵子長勢明顯下降。
記ji者zhe發fa現xian,發fa生sheng早zao衰shuai的de棵ke子zi多duo是shi從cong靠kao近jin水shui渠qu進jin水shui口kou的de一yi頭tou開kai始shi的de,如ru水shui渠qu設she置zhi在zai北bei牆qiang根gen下xia,那na麼me靠kao近jin水shui渠qu一yi側ce的de黃huang瓜gua易yi出chu現xian這zhe種zhong情qing況kuang,若ruo水shui渠qu在zai前qian臉lian處chu則ze南nan頭tou的de黃huang瓜gua易yi出chu現xian早zao衰shuai。早zao衰shuai發fa生sheng說shuo明ming黃huang瓜gua的de根gen係xi吸xi收shou能neng力li下xia降jiang,不bu能neng滿man足zu莖jing葉ye果guo對dui營ying養yang元yuan素su的de需xu求qiu,因yin而er葉ye片pian提ti前qian老lao化hua,膨peng果guo慢man,長chang勢shi弱ruo等deng。而er造zao成cheng根gen係xi吸xi收shou能neng力li下xia降jiang的de原yuan因yin,記ji者zhe認ren為wei是shi澆jiao水shui不bu當dang引yin起qi的de。
首shou先xian是shi澆jiao水shui過guo大da過guo急ji引yin起qi的de漚ou根gen或huo根gen係xi受shou傷shang。在zai澆jiao水shui時shi若ruo水shui流liu過guo急ji或huo者zhe水shui溝gou設she計ji得de比bi畦qi麵mian高gao很hen多duo的de話hua,就jiu會hui在zai入ru水shui口kou處chu衝chong出chu一yi個ge大da坑keng,因yin此ci每mei次ci澆jiao水shui時shi都dou會hui給gei這zhe頭tou的de黃huang瓜gua根gen係xi造zao成cheng一yi定ding的de物wu理li傷shang害hai,而er出chu現xian的de大da坑keng容rong易yi積ji水shui,從cong而er造zao成cheng蔬shu菜cai漚ou根gen。
qicishilianyintianhoulikejiaoshuiyishigenxishoushang。lianyintianxia,huangguadeshengchangshijianruo,genxiyeyiyang,ruozaizhuanqinghoulikejiaoshui,cishigenxixishounenglihaiweihuifu,kangxingyecha,rongyishoushang。qingdehuangguachangshijianruo,yanzhongdekedaozhizhizhuchuxianweinian。
預(yu)防(fang)早(zao)衰(shuai)重(zhong)點(dian)就(jiu)是(shi)養(yang)護(hu)好(hao)根(gen)係(xi)。第(di)一(yi),對(dui)於(yu)澆(jiao)水(shui)過(guo)大(da)過(guo)急(ji)引(yin)起(qi)根(gen)係(xi)受(shou)傷(shang)的(de)情(qing)況(kuang),可(ke)在(zai)水(shui)口(kou)處(chu)鋪(pu)舊(jiu)膜(mo)或(huo)者(zhe)是(shi)瓦(wa)片(pian),減(jian)緩(huan)水(shui)流(liu)對(dui)土(tu)壤(rang)的(de)衝(chong)擊(ji)力(li)。此(ci)時(shi)根(gen)係(xi)較(jiao)弱(ruo),應(ying)選(xuan)擇(ze)使(shi)用(yong)養(yang)根(gen)促(cu)根(gen)的(de)海(hai)藻(zao)酸(suan)、甲殼素、腐植酸類肥料,同時可配合全水溶性肥料補充營養,如芳潤等,每畝地3-5公斤即可。
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