今年立秋以來,玉溪市通海降雨頻繁,陰雨漬澇、高溫多雨等不良天氣對蔬菜生產造成較大影響。主要表現為:一yi是shi由you於yu地di勢shi低di窪wa,土tu質zhi粘zhan重zhong,排pai水shui不bu暢chang。二er是shi在zai降jiang雨yu期qi長chang或huo雨yu量liang過guo大da的de時shi間jian,地di表biao水shui和he地di下xia水shui過guo剩sheng,一yi時shi排pai不bu出chu去qu。或huo地di下xia水shui位wei高gao,排pai水shui不bu良liang的de窪wa地di,蔬shu菜cai遭zao受shou澇lao害hai。再zai就jiu是shi河he水shui泛fan濫lan和he溝gou路lu水shui流liu所suo致zhi的de澇lao害hai。總zong之zhi,水shui量liang過guo大da,又you沒mei有you很hen好hao地di排pai水shui,就jiu會hui形xing成cheng澇lao害hai。采cai取qu以yi下xia防fang澇lao害hai補bu救jiu措cuo施shi,確que保bao蔬shu菜cai生sheng產chan迅xun速su恢hui複fu。
一、清qing溝gou理li墒shang,及ji時shi排pai除chu菜cai田tian間jian積ji水shui。受shou淹yan菜cai地di應ying盡jin快kuai排pai除chu田tian間jian積ji水shui,騰teng空kong地di麵mian,減jian少shao淹yan漬zi時shi間jian,減jian輕qing受shou害hai程cheng度du。對dui受shou淹yan嚴yan重zhong,根gen係xi已yi死si亡wang的de大da白bai菜cai、芹菜、韭蔥等蔬菜要及時清潔田園。
二、區別對待,精細管理。一些雖受淹較重,但根係未死的甘藍、四si季ji豆dou等deng蔬shu菜cai,可ke適shi當dang通tong過guo剪jian除chu地di上shang部bu分fen過guo密mi的de枝zhi葉ye,或huo用yong遮zhe陽yang網wang短duan期qi適shi當dang遮zhe陰yin,防fang止zhi雨yu後hou突tu晴qing暴bao曬shai,減jian少shao蒸zheng發fa,預yu防fang生sheng理li失shi調tiao引yin起qi植zhi株zhu萎wei蔫nian。對dui瓜gua類lei蔬shu菜cai,可ke去qu除chu根gen基ji部bu黃huang葉ye和he老lao葉ye,適shi當dang中zhong耕geng、培土、壓蔓,促進根係發育,恢複生長。對豆類、葉ye菜cai類lei可ke用yong清qing水shui及ji時shi衝chong洗xi附fu集ji在zai葉ye片pian上shang的de沙sha泥ni,以yi利li於yu進jin行xing光guang合he作zuo用yong,促cu進jin植zhi株zhu生sheng長chang。同tong時shi進jin行xing田tian間jian中zhong耕geng及ji培pei土tu,預yu防fang因yin受shou淹yan造zao成cheng土tu壤rang板ban結jie,導dao致zhi根gen部bu缺que氧yang而er引yin起qi生sheng理li漚ou根gen死si亡wang。
三、zhuishifeishui,fangzhibingchong。shucaishouyanhou,genxihuolidadaxiajiang,zhizhukangxingjianruo,jiyifashengduozhongbingchonghai,yingjishizuohaoyufanggongzuo。muqianyingzuohaoduiruanfubing、生理漚根、霜黴病、疫(yi)病(bing)等(deng)的(de)防(fang)治(zhi)工(gong)作(zuo)。同(tong)時(shi),菜(cai)田(tian)受(shou)雨(yu)水(shui)衝(chong)刷(shua)及(ji)淹(yan)沒(mei),養(yang)分(fen)流(liu)失(shi)嚴(yan)重(zhong),及(ji)時(shi)增(zeng)施(shi)速(su)效(xiao)肥(fei)對(dui)植(zhi)株(zhu)恢(hui)複(fu)生(sheng)長(chang)和(he)增(zeng)加(jia)產(chan)量(liang)十(shi)分(fen)有(you)利(li)。在(zai)植(zhi)株(zhu)恢(hui)複(fu)生(sheng)長(chang)前(qian),以(yi)葉(ye)麵(mian)噴(pen)肥(fei)(如0.5%~1%尿素溶液、2%~3%過磷酸鈣浸出液、0.2%~0.3%磷酸二氫鉀溶液以及噴施寶、氨基酸等)為主;植zhi株zhu恢hui複fu生sheng長chang後hou,再zai進jin行xing根gen部bu施shi肥fei,以yi減jian輕qing澇lao災zai損sun失shi。以yi及ji結jie合he病bing蟲chong害hai防fang治zhi,進jin行xing根gen外wai噴pen施shi磷lin酸suan二er氫qing鉀jia等deng葉ye麵mian肥fei或huo其qi它ta生sheng長chang調tiao節jie劑ji,促cu進jin植zhi株zhu地di下xia新xin根gen的de發fa育yu和he地di上shang部bu新xin葉ye的de生sheng長chang。
四、jishigaizhongqitazuowu。yinlaozaijueshoudetiankuai,yaozhuazhujijie,jishiqiangzhongsushengshucai,zuidaxiandudimibuzaihaisunshi。duigaizhongyoukunnandedifang,kezaishuipaichuhou,zhuajingengpa、蓄水保墒,為秋冬蔬菜種植打好基礎。
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