1.緩慢升溫 蔬(shu)菜(cai)受(shou)凍(dong)後(hou),不(bu)能(neng)立(li)即(ji)閉(bi)棚(peng)升(sheng)溫(wen),隻(zhi)能(neng)使(shi)棚(peng)內(nei)溫(wen)度(du)緩(huan)慢(man)上(shang)升(sheng),讓(rang)受(shou)凍(dong)組(zu)織(zhi)逐(zhu)步(bu)吸(xi)收(shou)因(yin)受(shou)凍(dong)而(er)失(shi)去(qu)的(de)水(shui)分(fen)。太(tai)陽(yang)出(chu)來(lai)後(hou)應(ying)適(shi)度(du)敞(chang)開(kai)通(tong)風(feng)口(kou),過(guo)段(duan)時(shi)間(jian)再(zai)逐(zhu)漸(jian)縮(suo)小(xiao)、關閉,讓棚溫緩慢上升。
2.適當遮蔭 guacaizhizhushoudonghou,ruozhijierangyangguangzhaoshe,jiyifashengzuzhishishui,gansuoweinian,qingkuangyanzhongshi,zhizhuhuisiwang。yinci,yaozaidapengshangmianfugaiyicenglouguangdecaoshan,yekezaipengneidashezheyinwu,yicilaijianqingyangguangzhaoshedeqiangdu。bangwanhoubawaimiandefugaiwugaiyan,diertianzhizaizhongwuqianhoudeqiangguangjieduanshidangjiafugaiwuzheyin,yihoubiankezhuanruzhengchangguanli。
3.合理追肥 duishoudongzhizhuhelizhuishisuxiaofei,jinenggaishanzuowudeyingyangzhuangkuang,younengzengjiaxibaozuzhiyedenongdu,zengqiangzhizhunaihankangdongnengli,cujinhuifushengchang。yemianpenshibiturangzhuishishengfeiqiefeixiaokuai,yingyijubutongzuowudexufeitedian,helipenshi。gualeiheqieguoleishucaiyishengzhongduidan、磷、鉀的需求比較平衡,以選用三元素複合肥為宜。葉菜類蔬菜一生中對氮肥的需用量最多,應噴施1~2%的尿素水溶液。根莖類蔬菜對鉀、磷等元素的需要量較多,可噴施0.3%磷酸二氫鉀水溶液。葉麵肥要噴灑均勻周到,使葉片正反麵都沾滿肥液。噴後7~10天,再噴施一次。
4.人工噴水 用噴霧器噴水,可增加棚內空氣濕度,促使受凍組織吸水恢複活力。
5.剪除枯枝 受凍嚴重的枝葉,要及時剪除並清出棚外,以免黴變誘發病害。
6.防病治蟲 植(zhi)株(zhu)受(shou)凍(dong)後(hou),易(yi)遭(zao)受(shou)病(bing)蟲(chong)害(hai)侵(qin)襲(xi),要(yao)及(ji)時(shi)噴(pen)灑(sa)一(yi)些(xie)保(bao)護(hu)劑(ji)和(he)殺(sha)蟲(chong)殺(sha)菌(jun)劑(ji),還(hai)要(yao)結(jie)合(he)追(zhui)肥(fei),加(jia)強(qiang)管(guan)理(li),盡(jin)快(kuai)恢(hui)複(fu)生(sheng)長(chang)。雪(xue)後(hou)解(jie)凍(dong),植(zhi)株(zhu)恢(hui)複(fu)生(sheng)長(chang)後(hou),葉(ye)麵(mian)噴(pen)施(shi)一(yi)次(ci)甲(jia)基(ji)托(tuo)布(bu)津(jin)、多菌靈、百菌清等廣譜性藥劑(棚內濕度過大的可針對性地點撒原粉,即用布包好原藥,用竹竿綁住後,對準發病的地方輕敲撒藥),防治灰黴病、菌核病、立枯病等病害的發生。
手機版




