在施肥時,如果單獨施用化肥或有機肥或生物菌肥,都不能使蔬菜長時間保持良好的生長狀態,這是因為每種肥料都有各自的短處:化肥養分集中,施入後見效快,但是長期大量施用會造成土壤板結、鹽漬化等問題;有機肥養分全,可促進土壤團粒結構的形成,培肥土壤,但養分含量少,釋放慢,到了蔬菜生長後期不能供應足夠的養分;生物菌肥可活化土壤中被固定的營養元素,刺激根係的生長和吸收,但它不含任何營養元素,也不能長時間供應蔬菜生長所需的營養。
了解了每種肥料的短處,可以得出這樣的結論:化肥、有機肥、生物菌肥配合施用效果要好於單獨施用。但要想達到較佳的施肥效果,配合施用時就應注意以下幾方麵:
shouxian,zhuyishiyongshijian。youjifeijianxiaoman,yingtizaoshiyong,yibanzaishucaiboqianhuodingzhiqianyicixingjishi,shiyongzhiqianzuihaojinxingchongfenfushu,houqizhuishixiaoguoburuzuojifeimingxian。huafeijianxiaokuai,zuojifeishitiqian7天(tian)左(zuo)右(you)施(shi)入(ru),作(zuo)追(zhui)肥(fei)時(shi)應(ying)在(zai)蔬(shu)菜(cai)營(ying)養(yang)臨(lin)界(jie)期(qi)或(huo)吸(xi)收(shou)營(ying)養(yang)高(gao)峰(feng)期(qi)前(qian)施(shi)入(ru),以(yi)滿(man)足(zu)其(qi)所(suo)需(xu)。生(sheng)物(wu)菌(jun)肥(fei)在(zai)土(tu)壤(rang)中(zhong)經(jing)大(da)量(liang)繁(fan)殖(zhi)後(hou)才(cai)能(neng)發(fa)揮(hui)以(yi)菌(jun)抑(yi)菌(jun)的(de)作(zuo)用(yong),故(gu)要(yao)在(zai)蔬(shu)菜(cai)定(ding)植(zhi)前(qian)提(ti)早(zao)施(shi)入(ru),使(shi)其(qi)有(you)繁(fan)殖(zhi)壯(zhuang)大(da)的(de)時(shi)間(jian)。生(sheng)物(wu)菌(jun)肥(fei)可(ke)隨(sui)有(you)機(ji)肥(fei)一(yi)起(qi)施(shi)入(ru)土(tu)壤(rang),也(ye)可(ke)在(zai)定(ding)植(zhi)前(qian)或(huo)定(ding)植(zhi)時(shi)穴(xue)施(shi)。
其次,注意施用方法。有機肥主要作用是改良土壤,同時提供養分,yibanzuoweijifeishiruturang,suoyiyaojieheshengengshiru,shiturangyuyoujifeiwanquanhunyun,yidadaogailiangturangdemude。yinweiyoujifeizhongdeyangfenyidanweizhu,suoyishijifeishi,yuyoujifeidapeidedanfeikeshaoshi,danfeide30%作基肥,70%作zuo追zhui肥fei。鉀jia肥fei可ke作zuo基ji肥fei一yi次ci性xing施shi入ru。磷lin肥fei因yin移yi動dong性xing差cha,後hou期qi追zhui施shi效xiao果guo不bu好hao,也ye應ying作zuo基ji肥fei施shi入ru土tu壤rang。追zhui施shi的de化hua肥fei最zui好hao用yong全quan溶rong性xing速su效xiao肥fei,這zhe樣yang肥fei料liao分fen解jie後hou可ke被bei蔬shu菜cai迅xun速su吸xi收shou,對dui土tu壤rang影ying響xiang較jiao小xiao。生sheng物wu菌jun肥fei因yin其qi用yong量liang少shao可ke集ji中zhong施shi在zai定ding植zhi穴xue內nei或huo隨sui有you機ji肥fei基ji施shi。後hou期qi可ke多duo次ci追zhui施shi同tong一yi種zhong生sheng物wu菌jun肥fei,以yi壯zhuang大da菌jun群qun,增zeng強qiang其qi解jie磷lin解jie鉀jia能neng力li,提ti高gao防fang病bing效xiao果guo。
zuihou,zhuyishiyongshuliang。butongdeshucaibutongshengyuqi,suoxufeiliangbutong,bunengduoshiyebunengshaoshi。shucaiduiyingyangyuansudexishoushiyouyidingbilide,rufanqiesuoxuyaodedan、磷、鉀比為1∶0.23∶1.52,茄子為1∶0.23∶1.7,辣椒為1∶0.25∶1.31,黃瓜為1∶0.3∶1.5。yinci,shifeiyinggenjushucaidebutongxufeibilijinxing。danshiyinturangzhongyihanyouyixieyingyangyuansu,suoyizuihaojinxingyicicetu,ancetupeifangshifeijianyijinxing。
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