shouxian,pengneixiaoduyaochedi。shucaibayuanhou,cainongweiganchakou,shixiachashucaizaorishangshi,dadouzaibayuanhoucangcudingzhi,erhushiledapengdexiaodugongzuo,weixiachashucaibinghaibaofamaixialeyinhuan。shucaihuanchashi,yidingbapengneidekuzhicanyeqingliganjing,bingrenzhenzuohaopengneixiaodugongzuo。kezaishucaibayuanhou,meimuyongliuhuangfen1000克加鋸末混合,拌勻後分點放在棚室,將所用農具也一並放入棚室,暗火點燃後密閉棚室熏蒸12小時;也可用45%百菌清煙劑每畝用藥400~600克熏蒸,熏蒸時需密閉棚室2天消毒滅菌,定植前1~2天打開通風口通風。棚內的土壤也要進行消毒,可用30%的苯噻氰1000倍液或95%的惡黴靈水劑450倍液噴濕地麵,然後再定植蔬菜,效果較好。有地下害蟲的大棚地,可在蔬菜定植前穴施適量的殺蟲劑,以防地下害蟲為害。
其(qi)次(ci),土(tu)壤(rang)要(yao)深(shen)翻(fan)。不(bu)少(shao)菜(cai)農(nong)由(you)於(yu)倉(cang)促(cu)換(huan)茬(cha),沒(mei)有(you)對(dui)棚(peng)地(di)全(quan)麵(mian)翻(fan)耕(geng),而(er)隻(zhi)是(shi)對(dui)蔬(shu)菜(cai)種(zhong)植(zhi)畦(qi)進(jin)行(xing)了(le)耕(geng)翻(fan),這(zhe)是(shi)不(bu)提(ti)倡(chang)的(de)。最(zui)好(hao)人(ren)工(gong)深(shen)翻(fan)一(yi)遍(bian),或(huo)使(shi)用(yong)旋(xuan)耕(geng)機(ji)對(dui)棚(peng)地(di)全(quan)麵(mian)翻(fan)耕(geng)。
再zai次ci,基ji肥fei要yao充chong分fen腐fu熟shu。冬dong季ji氣qi溫wen低di,雞ji糞fen堆dui積ji在zai棚peng外wai往wang往wang發fa酵jiao不bu徹che底di。而er深shen冬dong期qi棚peng室shi為wei保bao溫wen又you相xiang對dui密mi閉bi,若ruo施shi用yong了le這zhe些xie沒mei腐fu熟shu好hao的de雞ji糞fen,很hen容rong易yi造zao成cheng氨an氣qi等deng有you害hai氣qi體ti在zai棚peng內nei積ji聚ju,從cong而er熏xun壞huai蔬shu菜cai。因yin此ci,蔬shu菜cai換huan茬cha後hou在zai施shi基ji肥fei時shi,一yi定ding要yao注zhu意yi查zha看kan雞ji糞fen是shi否fou已yi充chong分fen腐fu熟shu,外wai觀guan為wei黃huang褐he色se有you臭chou味wei的de為wei未wei腐fu熟shu的de雞ji糞fen,一yi定ding要yao避bi免mian施shi用yong。為wei提ti高gao腐fu熟shu效xiao果guo,可ke用yong1000克肥力高和2立方米雞糞拌勻,腐熟效果較好。某些含氮量過高的複合肥,也不宜在此期間內基施。
第di四si,蔬shu菜cai定ding植zhi前qian要yao提ti溫wen暖nuan地di。深shen冬dong期qi地di溫wen較jiao低di,不bu利li於yu蔬shu菜cai幼you苗miao定ding植zhi後hou紮zha根gen,低di溫wen下xia濕shi度du過guo大da還hai會hui發fa生sheng漚ou根gen。因yin此ci,蔬shu菜cai定ding植zhi前qian兩liang天tian一yi定ding要yao密mi閉bi大da棚peng放fang風feng口kou,提ti溫wen暖nuan地di,使shi蔬shu菜cai定ding植zhi後hou盡jin快kuai紮zha新xin根gen,早zao發fa苗miao。
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