近(jin)日(ri)筆(bi)者(zhe)在(zai)山(shan)東(dong)省(sheng)壽(shou)光(guang)市(shi)紀(ji)台(tai)鎮(zhen)孟(meng)家(jia)村(cun)菜(cai)農(nong)小(xiao)孟(meng)的(de)大(da)棚(peng)裏(li)看(kan)到(dao),他(ta)家(jia)大(da)棚(peng)內(nei)的(de)濕(shi)度(du)非(fei)常(chang)高(gao),臨(lin)近(jin)中(zhong)午(wu)了(le)茄(qie)子(zi)葉(ye)片(pian)上(shang)仍(reng)有(you)露(lu)珠(zhu)。據(ju)了(le)解(jie),小(xiao)孟(meng)在(zai)澆(jiao)水(shui)後(hou)發(fa)現(xian)棚(peng)內(nei)濕(shi)度(du)過(guo)大(da)時(shi)隻(zhi)知(zhi)道(dao)一(yi)味(wei)放(fang)風(feng),結(jie)果(guo)棚(peng)內(nei)濕(shi)度(du)並(bing)沒(mei)有(you)下(xia)降(jiang)多(duo)少(shao),反(fan)而(er)因(yin)為(wei)通(tong)風(feng)過(guo)度(du)造(zao)成(cheng)棚(peng)溫(wen)下(xia)降(jiang),尤(you)其(qi)是(shi)地(di)溫(wen)遲(chi)遲(chi)升(sheng)不(bu)上(shang)來(lai)導(dao)致(zhi)茄(qie)子(zi)不(bu)長(chang)。筆(bi)者(zhe)分(fen)析(xi)了(le)其(qi)中(zhong)的(de)原(yuan)因(yin)。
首先,不懂得增溫排濕。澆水後增溫排濕是最有效的排濕方法。棚溫較低時水分蒸發慢,很難將棚內的濕度降下來。正確的做法是:澆水後立即閉棚升溫至30℃以上,然後打開通風口通風20~30分鍾,之後再關閉放風口提溫,如此反複通風排濕效果較好。
qici,bucaiqumoxiaanguan。xiaomengshizaidimoshangjiaoshui,rangshuishunzhedingzhixuechudepodongshenrudixia。caiquzhezhongfangshijiaoshui,dimoshangcunshuishijianjiaochang,rongyichuxianjishui,shuifenbujianduandixiangpengneizhengfa,zaizhezhongqingkuangxia,fangfengpaishicuoshizaidaoweiyewujiyushi。yihouyingjiangdimogongqijiaoshui,caiqumoxiaanguan,zheyangpengneishiduziranjiuxiao,yerongyipaishi。
再(zai)次(ci),采(cai)用(yong)噴(pen)霧(wu)法(fa)防(fang)病(bing)。由(you)於(yu)棚(peng)內(nei)濕(shi)度(du)大(da),小(xiao)孟(meng)怕(pa)誘(you)發(fa)病(bing)害(hai),在(zai)澆(jiao)水(shui)後(hou)噴(pen)了(le)一(yi)遍(bian)藥(yao),這(zhe)無(wu)疑(yi)加(jia)重(zhong)了(le)棚(peng)內(nei)的(de)濕(shi)度(du)。在(zai)此(ci)期(qi)間(jian)應(ying)采(cai)用(yong)粉(fen)劑(ji)或(huo)煙(yan)劑(ji)防(fang)病(bing),盡(jin)量(liang)避(bi)免(mian)增(zeng)加(jia)棚(peng)內(nei)濕(shi)度(du)。
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