1.baowenmowangtongfeng。qinghaotianqixia,guangzhaotiaojianjiaohao,waijieqiwensuijiaodi,danjiekaicaoshanhou,pengneiwendushangshengjiaokuai,yingzaijiekaicaoshanhouyigexiaoshijishitongfeng,zheyangjikepaishifangbing,yekechongfenbuchongpengneideeryanghuatan,cujinguanghezuoyongdejinxing。jishiyudaolianyintian,jiekaicaoshanhou,pengneibujiangwendeqiantixia,yeyaojinxingtongfenghuanqi。
2.控kong水shui但dan不bu能neng缺que水shui。氣qi溫wen降jiang低di後hou,不bu少shao菜cai農nong怕pa澆jiao水shui後hou棚peng內nei濕shi度du增zeng加jia致zhi使shi病bing害hai加jia重zhong,而er不bu敢gan澆jiao水shui。可ke是shi處chu於yu結jie果guo期qi的de蔬shu菜cai對dui肥fei水shui的de需xu求qiu量liang較jiao大da,因yin此ci,菜cai農nong應ying選xuan擇ze晴qing好hao天tian氣qi采cai用yong膜mo下xia暗an灌guan或huo小xiao水shui勤qin澆jiao的de方fang式shi及ji時shi給gei蔬shu菜cai補bu足zu水shui分fen。為wei了le降jiang低di棚peng內nei濕shi度du,菜cai農nong可ke在zai澆jiao水shui當dang天tian或huo第di二er天tian在zai保bao證zheng秧yang苗miao不bu打da蔫nian的de前qian提ti下xia,提ti高gao棚peng溫wen至zhi35℃放風排濕。
3.及時補肥。低溫階段,作物生長慢,需求營養少,針對衝施化肥易導致傷根、黃(huang)葉(ye)的(de)問(wen)題(ti),當(dang)前(qian)衝(chong)肥(fei)應(ying)以(yi)生(sheng)物(wu)菌(jun)肥(fei)為(wei)主(zhu),這(zhe)樣(yang)不(bu)僅(jin)可(ke)以(yi)滿(man)足(zu)蔬(shu)菜(cai)對(dui)營(ying)養(yang)的(de)需(xu)求(qiu),還(hai)可(ke)以(yi)提(ti)高(gao)地(di)溫(wen),促(cu)進(jin)生(sheng)根(gen)。在(zai)低(di)溫(wen)時(shi)期(qi),根(gen)係(xi)活(huo)力(li)弱(ruo),為(wei)補(bu)充(chong)植(zhi)株(zhu)營(ying)養(yang),可(ke)進(jin)行(xing)葉(ye)麵(mian)噴(pen)肥(fei)。
4.合理使用植物生長調節劑。噴用生長調節劑如芸苔素內酯、愛多收等,可以調節作物的生長狀況,增強植株的抗病、抗逆能力。
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