大棚用肥的種類繁多,按照使用類型分為有機肥、無機肥等。按使用方法分為基肥、追肥。壽光棚菜基肥一般是雞、鴨、豬肥,豆粕、大豆並輔之部分化肥。用什麼樣的肥料、用多少,應注意哪些事項,筆者根據近年來的考察,提出以下幾點建議。
一、各類肥料的特點
(一)畜禽糞肥養分全,適當增施能高產。畜禽糞肥的養分含量全麵,有機質和大、中、微量元素幾乎都有,特別是有機質含量能達到90%yishang,duiyugailiangturang,yanggenfake,youzhigaochanzhiguanzhongyao。chuqinfenfeishuchixiaofeiliao,feixiaochijiuerhuanman,xuyaozaiweishengwufenjiezhuanhuayihoucainenggongzuowuxishou,zaidongchunjijie,yibanxuyao15- 20天才能發揮肥效。因為後勁足,所以能抑製早衰。因為畜禽肥料含有較多的氨基酸和芳香族類物質,適當增施對果實的顏色、光澤、酸甜度都有較大的影響,堅持使用畜禽肥料,果實甜香好吃就是很好的證明。
畜禽糞肥所含礦質養分不是太高,即磷、鉀、鈣、鎂mei等deng都dou是shi有you限xian的de,尤you其qi是shi氮dan素su在zai腐fu熟shu過guo程cheng中zhong大da量liang流liu失shi,含han量liang不bu足zu,遠yuan遠yuan不bu能neng滿man足zu作zuo物wu盛sheng果guo期qi的de需xu要yao,因yin此ci要yao把ba握wo好hao兩liang點dian,一yi是shi施shi肥fei數shu量liang要yao大da。按an壽shou光guang的de經jing驗yan做zuo法fa,一yi般ban每mei畝mu地di基ji施shi10方左右。二是初果期以後要及時追施化肥,補充化學元素的不足。稻殼雞鴨糞養分含量更低,每畝基施20方(fang)以(yi)上(shang)也(ye)是(shi)可(ke)以(yi)的(de),但(dan)連(lian)續(xu)多(duo)年(nian)大(da)量(liang)施(shi)用(yong),能(neng)造(zao)成(cheng)土(tu)壤(rang)深(shen)層(ceng)土(tu)傳(chuan)病(bing)害(hai)加(jia)重(zhong),作(zuo)物(wu)主(zhu)根(gen)係(xi)黑(hei)褐(he)色(se)壞(huai)死(si)。禽(qin)畜(chu)糞(fen)肥(fei)不(bu)能(neng)鮮(xian)用(yong),必(bi)須(xu)經(jing)過(guo)充(chong)分(fen)腐(fu)熟(shu)後(hou)施(shi)用(yong),通(tong)過(guo)腐(fu)熟(shu)能(neng)殺(sha)滅(mie)大(da)部(bu)分(fen)有(you)害(hai)菌(jun)和(he)害(hai)蟲(chong)卵(luan),並(bing)能(neng)使(shi)有(you)害(hai)氣(qi)體(ti)分(fen)解(jie)排(pai)放(fang),否(fou)則(ze)肥(fei)害(hai)燒(shao)根(gen),有(you)的(de)能(neng)造(zao)成(cheng)重(zhong)大(da)損(sun)失(shi)。腐(fu)熟(shu)之(zhi)後(hou)的(de)禽(qin)畜(chu)糞(fen)不(bu)但(dan)能(neng)做(zuo)微(wei)肥(fei),也(ye)是(shi)很(hen)好(hao)的(de)追(zhui)肥(fei),隨(sui)水(shui)衝(chong)施(shi)多(duo)次(ci),對(dui)於(yu)防(fang)早(zao)衰(shuai)增(zeng)產(chan)效(xiao)果(guo)顯(xian)著(zhu),其(qi)優(you)點(dian)是(shi)化(hua)肥(fei)不(bu)能(neng)比(bi)擬(ni)的(de)。禽(qin)畜(chu)糞(fen)肥(fei)做(zuo)基(ji)肥(fei)或(huo)追(zhui)肥(fei),最(zui)好(hao)與(yu)三(san)元(yuan)複(fu)合(he)肥(fei)配(pei)合(he)施(shi)用(yong)。
(二)生物菌肥作用大,改土養根要靠它。
suizhedapengcaidezhongchazhongzhi,tuchuanbinghaiheziduwuzhidejileiriquyanzhong,youqishiturangkelixifudekuangzhiyuansuyuelaiyueduo,chengxianburongjietaidehuahewu,yinqiturangyanzihua。yaogaibianturangehuadetaishi,danchunyikaohuaxuenongyaojinxingturangchuli,xianranshinanyizuodaode。tongguoshengwujunfeideshiyong,keyiyouxiaodijiejueturangwenti。shouxian,junfeizhongdeyabaoganjunhuojiaomujundeng,ruguodadaozugoudeshuliang,jiuhuixingchengyidingdeyouyijunqun,youyijunqunzaizuowudegenjiyishinengxianzhiyouhaiweishengwudefanzhiqinran,yizhihuo“吃掉”youhaijun,suoyijuyoufangzhituchuanbinghaidezuoyong。ershiyabaoganjundengnengfenjiezuowudeziduwuzhi,yenengfenjieturangzhongyibeigudingdekuangzhiyuansu,shiduonianbunengbeizuowuxishoudeyingyangbeizhongfujihualiyong,yinerturangzhongdehanyanliangyejiuzhujianjianshao,dadaojianqingyanzihuademude。
生物菌肥中的有效菌數量,即活菌數是判斷菌肥優劣的重要指標,一般以含活菌數每克達到2億個以上的為好。活菌數與菌肥的母液或基質密切相關,如果基質含有較多的氮磷鉀,活菌數就不可能太高,因為PHzhidebianhuahejizhideyingyangbuzukenengshiyouyijunbunengcunhuo。lingwai,turangshuifenhediwenyeshixianzhishengwujunzuoyongdezhongyaoyinsu。goumaishengwujunfeishi,yishiyaokanpinpai,rujikangjun968,三炬微生物菌劑,大源、三忠微肥等。二是看有益菌的含量,一般來說,活菌數越多越好。三是看出廠日期,半年期以內的比存放時間長的含量高。
生物菌肥的施用有基施、穴施、溝(gou)施(shi)和(he)衝(chong)施(shi),施(shi)用(yong)時(shi)要(yao)注(zhu)意(yi)土(tu)壤(rang)濕(shi)度(du),當(dang)土(tu)壤(rang)濕(shi)度(du)較(jiao)大(da)時(shi),生(sheng)物(wu)菌(jun)才(cai)能(neng)繁(fan)殖(zhi)和(he)擴(kuo)展(zhan)。其(qi)次(ci)是(shi)土(tu)壤(rang)溫(wen)度(du)要(yao)適(shi)宜(yi),地(di)溫(wen)太(tai)高(gao)太(tai)低(di)都(dou)能(neng)影(ying)響(xiang)有(you)益(yi)菌(jun)的(de)存(cun)活(huo)和(he)作(zuo)用(yong),一(yi)般(ban)超(chao)過(guo)35℃或低於12℃是shi不bu適shi宜yi的de,所suo以yi用yong了le生sheng物wu菌jun肥fei後hou不bu能neng進jin行xing高gao溫wen悶men棚peng。再zai是shi生sheng物wu菌jun肥fei可ke以yi和he有you機ji肥fei混hun施shi,有you機ji肥fei同tong時shi作zuo為wei有you益yi菌jun的de基ji質zhi,為wei其qi提ti供gong更geng多duo的de營ying養yang而er增zeng強qiang其qi活huo性xing,但dan與yu化hua肥fei混hun施shi時shi一yi定ding要yao慎shen用yong,尤you其qi是shi穴xue施shi、溝施和衝施時,化肥用量一定要少。另外,使用生物菌肥後,一般不能用殺菌劑進行灌根和衝施,特別是抗生素和銅製劑類。
(三)、化hua肥fei養yang分fen含han量liang高gao,適shi時shi追zhui施shi見jian效xiao快kuai。從cong現xian代dai的de化hua肥fei工gong業ye興xing起qi之zhi後hou,化hua肥fei具ju有you養yang分fen含han量liang高gao,速su效xiao性xing好hao的de特te點dian,對dui作zuo物wu的de增zeng產chan作zuo用yong具ju有you劃hua時shi代dai的de意yi義yi,在zai整zheng個ge大da棚peng用yong肥fei總zong量liang中zhong,按an有you效xiao成cheng分fen計ji算suan,可ke以yi達da到dao總zong供gong肥fei量liang的de80%以上,一般以追施和根外追肥為主。
從作物的需肥規律講,16種必需元素是必不可少的。構成植物體的主要元素是碳、氫、氧,占植物體總重量的40%以上,它的來源是空氣和水,而其它13zhongyuansujihudoukeyiyonghuafeilaijinxingbuchong。bingqiewulunshenmeyouzhideyoujifei,tongguoweishengwudezuoyong,yeyaozhuanhuaweigongzuowuxishoudekuangzhiyuansucaixing,congbenzhishangjiang,yiqiedefeiliao,benshenhanyoudehuozhuanhuaxingchengde,zuizhongbixuchengweiyishang16種(zhong)元(yuan)素(su)才(cai)能(neng)被(bei)作(zuo)物(wu)吸(xi)收(shou)利(li)用(yong)。之(zhi)所(suo)以(yi)化(hua)肥(fei)具(ju)有(you)直(zhi)接(jie)的(de)速(su)效(xiao)性(xing)原(yuan)理(li)就(jiu)在(zai)於(yu)此(ci)。因(yin)此(ci),大(da)棚(peng)以(yi)化(hua)肥(fei)促(cu)進(jin)蔬(shu)菜(cai)生(sheng)長(chang),形(xing)成(cheng)比(bi)較(jiao)高(gao)的(de)產(chan)量(liang)也(ye)就(jiu)勢(shi)在(zai)必(bi)然(ran)了(le)。
從cong發fa展zhan的de趨qu勢shi看kan,大da棚peng使shi用yong單dan一yi元yuan素su化hua肥fei的de方fang式shi越yue來lai越yue落luo後hou,菜cai農nong從cong生sheng產chan實shi踐jian中zhong也ye逐zhu漸jian認ren識shi到dao,作zuo物wu吸xi收shou肥fei料liao是shi有you比bi例li的de,是shi多duo種zhong營ying養yang元yuan素su同tong時shi吸xi收shou的de,必bi須xu按an照zhao作zuo物wu的de需xu肥fei規gui律lv進jin行xing配pei方fang施shi肥fei才cai科ke學xue合he理li,所suo以yi多duo元yuan素su複fu合he肥fei,控kong釋shi肥fei、緩釋肥也就應運而生。
葉菜類屬喜氨的作物,單一追施氮肥即能形成較高的產量,而茄果類類、豆類蔬菜,它們生長發育的全過程氮磷鉀所需要的比例大體為2:1:4,也(ye)就(jiu)是(shi)要(yao)以(yi)鉀(jia)素(su)為(wei)主(zhu),有(you)經(jing)驗(yan)的(de)菜(cai)農(nong)往(wang)往(wang)多(duo)選(xuan)用(yong)高(gao)鉀(jia)的(de)複(fu)合(he)肥(fei)施(shi)用(yong)。實(shi)踐(jian)證(zheng)明(ming),硝(xiao)態(tai)氮(dan)更(geng)有(you)利(li)於(yu)作(zuo)物(wu)的(de)吸(xi)收(shou),氮(dan)態(tai)容(rong)易(yi)被(bei)土(tu)壤(rang)固(gu)定(ding),效(xiao)果(guo)差(cha),浪(lang)費(fei)大(da)。磷(lin)肥(fei)因(yin)移(yi)動(dong)性(xing)差(cha),容(rong)易(yi)被(bei)土(tu)壤(rang)固(gu)定(ding),要(yao)以(yi)基(ji)施(shi)為(wei)主(zhu),可(ke)以(yi)在(zai)深(shen)翻(fan)時(shi)一(yi)次(ci)性(xing)施(shi)足(zu),在(zai)追(zhui)肥(fei)時(shi)以(yi)低(di)含(han)量(liang)的(de)複(fu)合(he)肥(fei)為(wei)好(hao)。鈣(gai)鎂(mei)元(yuan)素(su)作(zuo)物(wu)需(xu)求(qiu)量(liang)也(ye)很(hen)大(da),但(dan)它(ta)們(men)的(de)來(lai)源(yuan)主(zhu)要(yao)是(shi)土(tu)壤(rang)和(he)水(shui),中(zhong)國(guo)北(bei)方(fang)廣(guang)義(yi)上(shang)講(jiang),這(zhe)兩(liang)種(zhong)元(yuan)素(su)是(shi)充(chong)足(zu)的(de),不(bu)需(xu)要(yao)施(shi)用(yong)。為(wei)什(shen)麼(me)會(hui)缺(que)鈣(gai)、quemeine?wangwangbushiyinweiturangqueerxingchengquesuzhengzhuang,ershiyinweizuowuduigaimeidexishouheyunshushouzuchuxianshenglishitiaozaochengde。liruturangganhanhuogenfubingjiuhenrongyiyinqiqifubinghuoxiabuyepianfahuang,yinci,danchungoumaishiyonggai、鎂肥是不必要的,適當進行葉片噴施即可。
weiliangyuansudedingyishuoming,zuowushengchanglilebuxing,duolerongyishouhai,jichanshengfuzuoyong。quetienengdaozhinenyefahuang,tebieshishihuixingturangzhonghenrongyifashenghuangyebing。quepengnengyinqizuowuhuaerbushi。quexinchanshenghuangyehe“小葉病”。土壤化驗說明,我國北方容易缺少這三種微量元素肥料,至於錳、銅,一般通過噴藥過程就已經飽和,甚至超標,不提倡基施或追施。微量元素作基肥時,一般每畝施用1-2公斤即可,如果葉麵噴施,可兌成0.1-0.3%的溶液,整個生長期噴用2-3次為宜。
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