一、中zhong耕geng培pei土tu。土tu壤rang封feng凍dong前qian中zhong耕geng培pei土tu,可ke疏shu鬆song土tu壤rang,增zeng厚hou根gen係xi土tu層ceng,對dui阻zu擋dang寒han風feng侵qin襲xi,提ti高gao吸xi熱re保bao溫wen抗kang寒han能neng力li有you一yi定ding作zuo用yong。尤you其qi是shi高gao腳jiao苗miao,培pei土tu壅yong蔸dou後hou,根gen莖jing變bian短duan,有you利li於yu保bao暖nuan。
二、重zhong施shi冬dong肥fei。在zai嚴yan寒han到dao來lai前qian,追zhui施shi臘la肥fei,增zeng施shi磷lin鉀jia肥fei,既ji可ke顯xian著zhe增zeng強qiang油you菜cai抗kang寒han能neng力li,又you可ke供gong應ying越yue冬dong期qi和he抽chou薹tai開kai花hua期qi的de營ying養yang,保bao證zheng後hou期qi平ping衡heng生sheng長chang。
三、覆蓋防寒。用稻草、穀殼或其他作物秸稈鋪蓋在油菜行間保暖,可減輕寒風直接侵襲。也可在寒潮來臨前,在油菜葉麵上撒一層穀殼灰、草木灰、火土灰等,防止葉片受凍。
四、灌guan水shui防fang凍dong。冰bing凍dong或huo嚴yan寒han來lai臨lin前qian,及ji時shi給gei油you菜cai田tian灌guan水shui,能neng避bi免mian地di溫wen大da幅fu度du下xia降jiang,緩huan解jie凍dong害hai程cheng度du,尤you其qi是shi對dui防fang止zhi幹gan凍dong的de效xiao果guo較jiao好hao。同tong時shi,灌guan水shui後hou根gen係xi與yu土tu壤rang緊jin密mi結jie合he,有you利li於yu油you菜cai對dui水shui分fen和he養yang料liao的de吸xi收shou。冰bing凍dong過guo後hou,應ying及ji時shi清qing溝gou排pai水shui,以yi免mian因yin漬zi水shui傷shang根gen。
五、zhaichuzaotai。youcairuguochuxianzaotaizaohuaxianxiang,jiangxiaohaodaliangyangfen,shizhizhukanghannenglijianruo,yingjishizhaitai,jianqingdonghaichengdu。zhaitaiyixuanqingtianzhongwujinxing。zhaitaihou,jishizhuishishiliangdesuxiaodanfei,yicujinyoucaishengchang,fangzhidonghaifasheng。
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