手機版
藥害苗
藥害苗產生的原因很多：一是誤用了不對症的農藥或誤用了除草劑；二是施用農藥的濃度過大或者連續重複施藥；三是高溫條件下施藥；四是施用了劣質農藥；五是施藥方法不正確或將不能混用的農藥簡單混合使用。
防治措施：yishijishipenshuichongxi。ruoshiyepianhezhizhuyinpensayaoyeeryinqiyaohai，ruguofaxianjishi，kezaizaoqiyaoyeshangweiwanquanshentoushi，xunsuyongdaliangqingshuipensayepian，fanfupenshui3～4次ci，盡jin量liang把ba植zhi株zhu表biao麵mian的de藥yao液ye衝chong刷shua掉diao，並bing配pei合he中zhong耕geng鬆song土tu，促cu進jin根gen係xi發fa育yu，迅xun速su恢hui複fu植zhi株zhu正zheng常chang生sheng長chang。二er是shi中zhong和he處chu理li，噴pen施shi植zhi物wu生sheng長chang調tiao節jie劑ji。根gen據ju引yin發fa藥yao害hai的de農nong藥yao性xing質zhi，采cai用yong與yu其qi性xing質zhi相xiang反fan的de藥yao物wu中zhong和he，如ru噴pen硫liu酸suan銅tong藥yao害hai可ke用yong0.5%生石灰水中和，多效唑藥害可噴灑赤黴素緩解。用芸苔素內酯、愛多收、細胞分裂素等植物生長調節劑，配合甲殼素、海藻酸、氨基酸、核苷酸、全quan營ying養yang葉ye麵mian肥fei等deng處chu理li葉ye片pian，可ke提ti高gao葉ye片pian抗kang性xing，減jian輕qing藥yao害hai。三san是shi追zhui施shi速su效xiao肥fei料liao。按an照zhao蔬shu菜cai生sheng長chang規gui律lv，蔬shu菜cai遭zao受shou藥yao害hai後hou，往wang往wang生sheng長chang受shou到dao抑yi製zhi，此ci時shi要yao及ji時shi澆jiao水shui，並bing追zhui施shi全quan水shui溶rong性xing肥fei料liao。
萎蔫苗
多由連續陰雨天氣突然轉晴後，全部揭開遮陽網所致。
防止措施：一是遇連續陰天突然轉晴後，要使幼苗逐漸見光，切勿立即全部揭開覆蓋物，應分批揭除，逐漸增加光照；在zai棚peng的de高gao處chu通tong風feng，利li用yong放fang風feng口kou的de大da小xiao和he放fang風feng時shi間jian的de長chang短duan來lai調tiao節jie苗miao床chuang溫wen度du，切qie忌ji通tong底di風feng。二er是shi揭jie開kai遮zhe陽yang網wang後hou不bu久jiu，如ru有you幼you苗miao萎wei蔫nian，要yao立li即ji蓋gai苫shan，待dai幼you苗miao恢hui複fu正zheng常chang後hou再zai揭jie苫shan，切qie忌ji對dui萎wei蔫nian苗miao澆jiao水shui。三san是shi噴pen水shui、控溫。噴水，提高空氣濕度，此為開源。空氣濕度較高時，葉片蒸騰作用明顯降低，這也是棚室內蔬菜葉片大、qikongdadezhuyaoyuanyin。penshuihaikeshiyepianzhijiexishoushuifen，huanjieweinianzhengzhuang。kongwen，jiangdiyepianzhengtengzuoyongqiangdu，ciweijieliu。wenduduikongqixiangduishidudeyingxiangjida，zhizhuchuxianweinianshi，shidangjiangdiwendu，ketigaokongqixiangduishidu，jiangdizhengtengzuoyongqiangdu，huanjieweinian。
漚根苗
由於床土濕度大、溫度高而引起的根係損傷，其表現是葉片發黃萎蔫，秧苗停止生長。
防止措施：一是及時降低濕度。選擇透氣性強的土壤做苗床，在大棚或溫室等保護地育苗時，一般苗床不明顯幹旱(表土手握不散團)shiyingjinliangshaojiaoshuihuobujiaoshui，mingxianganhanshijiaoshuiliangyebuyiguoda。chuangneishiduguoda，kefugaigancaomuhui，yekeshidangjinxingtongfengpaishi。ershishizunongjiafei。shucaiyumiao，yaozengshinongjiafei，jikepeifeidili，peiyuzhuangmiao，tigaoshucaiyoumiaokangbingnengli，youketigaodiwen，jianqingbinghaifasheng。jutizuofashi：在zai蔬shu菜cai育yu苗miao前qian，將jiang充chong分fen腐fu熟shu的de農nong家jia肥fei搗dao碎sui與yu床chuang土tu混hun拌ban。三san是shi適shi時shi通tong風feng。在zai子zi葉ye展zhan開kai後hou，揭jie開kai覆fu蓋gai物wu通tong風feng，並bing向xiang苗miao床chuang內nei均jun勻yun撒sa施shi一yi層ceng細xi幹gan土tu，隨sui後hou蓋gai嚴yan覆fu蓋gai物wu，這zhe樣yang可ke降jiang低di床chuang土tu濕shi度du。四si是shi一yi旦dan發fa生sheng漚ou根gen，要yao及ji時shi通tong風feng排pai濕shi，也ye可ke撒sa施shi細xi幹gan土tu和he草cao木mu灰hui吸xi濕shi。五wu是shi中zhong耕geng鬆song土tu。一yi般ban情qing況kuang下xia，多duo數shu蔬shu菜cai根gen係xi在zai土tu壤rang氧yang氣qi濃nong度du為wei8%以(yi)上(shang)時(shi)生(sheng)長(chang)良(liang)好(hao)。土(tu)壤(rang)由(you)於(yu)透(tou)氣(qi)性(xing)差(cha)，又(you)有(you)根(gen)係(xi)和(he)微(wei)生(sheng)物(wu)的(de)活(huo)動(dong)，氧(yang)氣(qi)濃(nong)度(du)要(yao)比(bi)大(da)氣(qi)低(di)得(de)多(duo)，特(te)別(bie)是(shi)在(zai)土(tu)壤(rang)板(ban)結(jie)和(he)積(ji)水(shui)時(shi)，根(gen)係(xi)無(wu)氧(yang)呼(hu)吸(xi)導(dao)致(zhi)有(you)毒(du)物(wu)質(zhi)增(zeng)加(jia)，不(bu)利(li)於(yu)根(gen)係(xi)生(sheng)長(chang)。及(ji)時(shi)中(zhong)耕(geng)劃(hua)鋤(chu)，提(ti)高(gao)土(tu)壤(rang)透(tou)氣(qi)性(xing)，是(shi)促(cu)進(jin)根(gen)係(xi)生(sheng)長(chang)、培育健壯植株的保障。
