早施苗肥 芝麻因為種子較小,加上往往底施氮肥施用過多,容易使幼苗旺長,形成高腳苗。因此,芝麻要結合早間苗、早(zao)定(ding)苗(miao),看(kan)苗(miao)早(zao)施(shi)一(yi)次(ci)以(yi)速(su)效(xiao)性(xing)肥(fei)料(liao)為(wei)主(zhu)的(de)苗(miao)肥(fei),施(shi)好(hao)苗(miao)肥(fei)是(shi)芝(zhi)麻(ma)早(zao)發(fa)健(jian)長(chang)的(de)重(zhong)要(yao)措(cuo)施(shi)。苗(miao)期(qi)肥(fei)以(yi)稀(xi)釋(shi)腐(fu)熟(shu)的(de)人(ren)糞(fen)尿(niao)或(huo)尿(niao)素(su)為(wei)好(hao),一(yi)般(ban)在(zai)定(ding)苗(miao)後(hou)每(mei)畝(mu)追(zhui)施(shi)尿(niao)素(su)2~3公斤,旱情較重時要先抗旱再追施或用稀薄人糞尿稀釋後澆灌。對苗勢較差的,還要采取“開特餐”的方法,追施提苗肥。芝麻追施苗肥,還要根據芝麻根係較淺的特點,盡量淺施或重點施於根部。
巧施蕾肥 芝zhi麻ma現xian蕾lei期qi正zheng進jin入ru花hua芽ya分fen化hua時shi期qi,這zhe時shi植zhi株zhu營ying養yang生sheng長chang和he生sheng殖zhi生sheng長chang同tong時shi並bing旺wang。因yin此ci,施shi好hao蕾lei肥fei對dui芝zhi麻ma高gao產chan舉ju足zu輕qing重zhong。現xian蕾lei肥fei一yi般ban以yi氮dan肥fei為wei主zhu,磷lin、鉀肥為輔。施肥時,對條播的可在距芝麻植株10厘米左右開溝條施或點施,施入10厘米深的土層中,以利根的吸收,施後覆土;duisabodekejiangfushudebingfeihuokelizhuangniaosuchanruxisuituzhongchongfenbanyunsashi,shifeihousuijijinxingzhonggengsongtuyanfei。tianqiganhanshi,shihouyingpenshuiyichongfenfahuifeixiao。yekecaiyongjiaolinfangfa,jimeimuyongniaosu4~6公斤兌水200公斤澆潑於芝麻蔸部。此外,對缺硼地區和缺硼土壤還應酌情增施硼肥。
重施花肥 芝麻進入開花期生長最迅速,此期吸收的營養物質占整個生育期間的70%~80%。weilenengmanzuzhizhushengchangfayudexuyao,shizhimashengchangwangsheng,jileigengduodeguanghechanwu,zengjiahuashuodeshuliang,houqiwenchangbuzaoshuai,shizilichongshibaoman,bixuzhongshihuafei。tongshi,huajiaqicegenyikaishidaliangxingcheng,genxidexishounenglizengqiang,zhizhudeshengchangsudujiakuai,duiyangfendexuqiuliangyexianzhuzengjia。yinci,yaozhongshiyicihuajiafei,yibanmeimuyongniaosu5~8公斤兌水200公斤澆潑於芝麻蔸部,也可施用漚製的餅肥、人糞肥等。另外,在始花到盛花期,可進行根外追肥,方法是選晴天下午,用0.3%的磷酸二氫鉀溶液噴於葉片正反麵,每次間隔5~6天,連噴2~3次。
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