生(sheng)產(chan)中(zhong),不(bu)少(shao)菜(cai)農(nong)向(xiang)記(ji)者(zhe)反(fan)映(ying),即(ji)使(shi)他(ta)們(men)在(zai)施(shi)用(yong)前(qian)對(dui)雞(ji)糞(fen)進(jin)行(xing)了(le)腐(fu)熟(shu),使(shi)用(yong)後(hou)還(hai)是(shi)會(hui)發(fa)生(sheng)氣(qi)害(hai)熏(xun)苗(miao)的(de)情(qing)況(kuang),這(zhe)讓(rang)他(ta)們(men)大(da)傷(shang)腦(nao)筋(jin)。那(na)麼(me),冬(dong)季(ji)蔬(shu)菜(cai)換(huan)茬(cha)時(shi),怎(zen)樣(yang)施(shi)用(yong)雞(ji)糞(fen)更(geng)安(an)全(quan)?記(ji)者(zhe)認(ren)為(wei),須(xu)做(zuo)到(dao)以(yi)下(xia)幾(ji)點(dian):
首shou先xian,要yao對dui雞ji糞fen徹che底di腐fu熟shu。在zai冬dong季ji,外wai界jie溫wen度du低di,雞ji糞fen堆dui在zai棚peng外wai腐fu熟shu效xiao果guo很hen差cha。於yu是shi一yi些xie菜cai農nong從cong夏xia季ji就jiu買mai來lai雞ji糞fen,認ren為wei提ti前qian在zai棚peng外wai堆dui上shang幾ji個ge月yue,應ying該gai早zao就jiu腐fu熟shu好hao了le,結jie果guo使shi用yong後hou還hai是shi出chu現xian問wen題ti。因yin此ci,雞ji糞fen在zai冬dong季ji施shi用yong時shi,菜cai農nong一yi定ding要yao仔zai細xi觀guan察cha,腐fu熟shu徹che底di的de雞ji糞fen應ying該gai顏yan色se較jiao深shen,呈cheng黑hei褐he色se,臭chou味wei較jiao淡dan。為wei防fang萬wan一yi,在zai入ru棚peng前qian最zui好hao將jiang雞ji糞fen摻chan入ru肥fei力li高gao等deng腐fu熟shu劑ji再zai腐fu熟shu一yi遍bian。一yi般ban每mei2方雞糞摻一瓶肥力高(1千克),10天左右即可完成腐熟,不會再危害蔬菜。
其次,雞糞施入棚地後要澆一遍水。雞糞施入棚地後,不要急於定植蔬菜,應先澆一遍水,然後封棚提溫,這樣做目的有二:一是可以促進雞糞進一步腐熟;ershixianjiaoshuidengdiwentishenghouzaidingzhishucai,youliyuhuanmiao。jiaoshuihou,ruopengneimeiyouanwei,shangqingheshishi,jiukeyidingzhishucaile。zheyangzuoxiangbidingzhihouzaijiaoshui,fashengqihaijilvyaoxiaohenduo。
再(zai)次(ci),注(zhu)意(yi)加(jia)強(qiang)通(tong)風(feng)。蔬(shu)菜(cai)定(ding)植(zhi)初(chu)期(qi),要(yao)注(zhu)意(yi)通(tong)風(feng),包(bao)括(kuo)夜(ye)間(jian),也(ye)要(yao)盡(jin)量(liang)將(jiang)放(fang)風(feng)口(kou)留(liu)下(xia)一(yi)道(dao)小(xiao)縫(feng),以(yi)免(mian)氨(an)氣(qi)等(deng)有(you)害(hai)氣(qi)體(ti)在(zai)棚(peng)內(nei)積(ji)累(lei),對(dui)蔬(shu)菜(cai)形(xing)成(cheng)為(wei)害(hai)。尤(you)其(qi)在(zai)衝(chong)施(shi)生(sheng)物(wu)菌(jun)肥(fei)後(hou),更(geng)要(yao)留(liu)心(xin)棚(peng)內(nei)氨(an)氣(qi)的(de)濃(nong)度(du),因(yin)生(sheng)物(wu)菌(jun)會(hui)加(jia)速(su)雞(ji)糞(fen)的(de)腐(fu)熟(shu)速(su)度(du),可(ke)能(neng)使(shi)棚(peng)內(nei)氨(an)氣(qi)在(zai)短(duan)時(shi)間(jian)內(nei)濃(nong)度(du)增(zeng)大(da),進(jin)而(er)使(shi)蔬(shu)菜(cai)遭(zao)受(shou)氣(qi)害(hai)。
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