jinruxiajihou,jinqijiangshuimingxianzengduo,congxiazhoudetianqiyubaoqingkuangkan,rengyoujiangyutianqi。zaiduoyujijiepengshiguanlishangyingzhuyinaxiewentine?jizherenweiyingzhuyiyixiasandian:
首shou先xian,關guan注zhu天tian氣qi預yu報bao,雨yu前qian及ji時shi關guan閉bi通tong風feng口kou,嚴yan防fang雨yu水shui進jin棚peng。雨yu水shui進jin棚peng後hou,不bu僅jin容rong易yi導dao致zhi病bing害hai的de發fa生sheng,而er且qie會hui導dao致zhi土tu壤rang鹽yan漬zi化hua,另ling外wai,雨yu水shui進jin棚peng,還hai會hui導dao致zhi漚ou根gen,影ying響xiang根gen係xi對dui水shui分fen和he養yang分fen的de吸xi收shou能neng力li。若ruo雨yu水shui進jin棚peng,應ying及ji時shi排pai出chu雨yu水shui,保bao持chi土tu壤rang濕shi潤run,在zai未wei鋪pu地di膜mo的de情qing況kuang下xia,可ke適shi當dang劃hua鋤chu增zeng加jia土tu壤rang的de通tong透tou性xing,給gei根gen係xi創chuang造zao適shi宜yi的de環huan境jing條tiao件jian。
其(qi)次(ci),降(jiang)低(di)棚(peng)內(nei)濕(shi)度(du),預(yu)防(fang)病(bing)害(hai)發(fa)生(sheng)。夏(xia)季(ji)氣(qi)溫(wen)較(jiao)高(gao),在(zai)多(duo)雨(yu)季(ji)節(jie),棚(peng)內(nei)的(de)濕(shi)度(du)較(jiao)大(da),高(gao)溫(wen)高(gao)濕(shi)的(de)環(huan)境(jing)條(tiao)件(jian)下(xia)很(hen)容(rong)易(yi)誘(you)發(fa)病(bing)害(hai)的(de)發(fa)生(sheng),如(ru)黃(huang)瓜(gua)的(de)褐(he)斑(ban)病(bing)、西紅柿的早疫病等,為防止病害的發生,雨季一定要注意降低棚內濕度,主要從以下三方麵入手:diyi,jiaqiangtongfeng,yutinghoujishilakaifangfengkoutongfeng,jinxingduanshijiandetongfengpaishi。dier,yanjinyuqianyijiyutianjiaoshui,yimianzengjiapengneideshidu。disan,yuqijixupenyaofangbingshi,yingjinliangbimianpenwu,kecaiyongpenfenyijiyanxundebanfa。
再(zai)次(ci),久(jiu)陰(yin)乍(zha)晴(qing)的(de)情(qing)況(kuang)下(xia)要(yao)早(zao)防(fang)蔬(shu)菜(cai)萎(wei)蔫(nian)。在(zai)夏(xia)季(ji)連(lian)續(xu)陰(yin)雨(yu)天(tian)過(guo)後(hou),蔬(shu)菜(cai)組(zu)織(zhi)較(jiao)幼(you)嫩(nen),突(tu)然(ran)遇(yu)到(dao)晴(qing)好(hao)天(tian)氣(qi),光(guang)照(zhao)過(guo)強(qiang),不(bu)僅(jin)會(hui)灼(zhuo)傷(shang)葉(ye)片(pian),而(er)且(qie)在(zai)高(gao)溫(wen)強(qiang)光(guang)下(xia)很(hen)容(rong)易(yi)造(zao)成(cheng)葉(ye)片(pian)萎(wei)蔫(nian)。為(wei)防(fang)止(zhi)植(zhi)株(zhu)萎(wei)蔫(nian),應(ying)做(zuo)好(hao)以(yi)下(xia)兩(liang)點(dian):第di一yi,緩huan慢man放fang風feng。久jiu陰yin乍zha晴qing後hou,若ruo突tu然ran放fang風feng過guo大da,棚peng內nei濕shi度du降jiang低di,葉ye片pian蒸zheng騰teng量liang增zeng大da,根gen係xi不bu能neng及ji時shi供gong應ying水shui分fen,很hen容rong易yi造zao成cheng植zhi株zhu萎wei蔫nian。可ke緩huan慢man放fang風feng,逐zhu漸jian加jia大da通tong風feng量liang。第di二er,及ji時shi設she置zhi遮zhe陽yang網wang。為wei防fang止zhi植zhi株zhu受shou到dao強qiang光guang照zhao射she,可ke在zai中zhong午wu強qiang光guang下xia,及ji時shi設she置zhi遮zhe陽yang網wang,防fang止zhi高gao溫wen危wei害hai。若ruo植zhi株zhu出chu現xian輕qing微wei的de萎wei蔫nian以yi及ji葉ye片pian幹gan邊bian的de情qing況kuang,可ke及ji時shi噴pen灑sa清qing水shui,能neng有you效xiao緩huan解jie症zheng狀zhuang;嚴重時,可在水中加入2000倍的阿司匹林,降低植物的蒸騰作用,有利於植株恢複正常生長。
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