據ju多duo年nian多duo點dian調tiao查zha,種zhong肥fei施shi用yong不bu當dang的de情qing況kuang時shi有you發fa生sheng,造zao成cheng棉mian種zhong潰kui爛lan的de損sun失shi是shi很hen大da的de,特te別bie是shi對dui價jia格ge比bi較jiao高gao的de雜za交jiao棉mian花hua優you良liang品pin種zhong。種zhong肥fei施shi用yong不bu當dang不bu但dan造zao成cheng爛lan種zhong損sun失shi,而er且qie使shi棉mian田tian計ji劃hua麵mian積ji的de落luo實shi不bu到dao位wei或huo貽yi誤wu農nong時shi。如ru湖hu北bei省sheng孝xiao感gan市shi孝xiao南nan區qu東dong山shan頭tou原yuan種zhong場chang曾zeng有you300多duo畝mu棉mian田tian的de棉mian種zhong采cai用yong尿niao素su拌ban種zhong,播bo種zhong後hou,全quan都dou沒mei有you出chu苗miao,經jing田tian間jian檢jian查zha,棉mian種zhong全quan部bu腐fu爛lan了le,隻zhi得de重zhong新xin播bo種zhong。又you如ru湖hu北bei省sheng漢han川chuan市shi仙xian女nv山shan街jie道dao辦ban事shi處chu有you個ge植zhi棉mian小xiao組zu,該gai小xiao組zu部bu分fen農nong戶hu采cai用yong過guo磷lin酸suan鈣gai拌ban種zhong,拌ban種zhong後hou當dang天tian沒mei有you播bo種zhong,而er是shi次ci日ri播bo種zhong,結jie果guo棉mian種zhong在zai田tian間jian全quan未wei出chu苗miao。據ju湖hu北bei省sheng孝xiao感gan市shi農nong科ke所suo在zai雲yun夢meng縣xian城cheng關guan鎮zhen群qun力li村cun試shi驗yan,采cai用yong過guo磷lin酸suan鈣gai拌ban種zhong,當dang天tian拌ban種zhong當dang天tian播bo種zhong的de,不bu但dan出chu苗miao整zheng齊qi而er且qie棉mian苗miao茁zhuo壯zhuang;采用碳酸氫銨拌的,出苗率不足20%;采用尿素拌種的,未出1株苗。可見,選用的拌種肥料品種不妥或者拌種方法不當,常會給棉花生產造成不小的損失。
另(ling)外(wai),栽(zai)培(pei)措(cuo)施(shi)上(shang)的(de)失(shi)誤(wu)也(ye)可(ke)能(neng)導(dao)致(zhi)爛(lan)種(zhong)損(sun)苗(miao)。如(ru)棉(mian)田(tian)地(di)下(xia)水(shui)位(wei)過(guo)高(gao)或(huo)者(zhe)田(tian)間(jian)溝(gou)路(lu)堵(du)塞(sai),或(huo)棉(mian)種(zhong)播(bo)種(zhong)過(guo)深(shen),或(huo)棉(mian)田(tian)過(guo)於(yu)板(ban)結(jie),都(dou)可(ke)能(neng)造(zao)成(cheng)爛(lan)種(zhong)損(sun)苗(miao)。
春耕春播即將開始,棉花播種育苗在4yueshangzhongxunyejiangqidong,weilezuodaojingxibozhong,cushiquanmiaozhuangmiao,bimianhuojianshaomianhualiangzhongsunshi,bixuzongjiejingyanjiaoxun。yingdangkandao,youyulanzhongsunmiaozaihendachengdushangshirenweiyinsuzaochengde,yinci,zaijishushangyinggaizhuyiruxiajidian:
一、xuanyongduilubanzhongfeiliao。shichangshangdehuafeipinzhonghenduo,danjingguoduonianduocibijiaoshiyan,yiguolinsuangaibanzhongbijiaoanquan,qiejiyongniaosubanzhong。ruyongduoyuanfuhefeizaidatianzuozhongfei,bixutizaokaigoutiaoshi,ranhouzaibomianzhong。
二、講究種肥施用方法。當選好拌種肥料後,一要注意肥料與種子用量的比例,如過磷酸鈣與棉花種子的比例以1∶100為宜;二要當天拌種當天播種完畢。
三、抓好農業常規措施配套。一是棉花大田整地要做到行平土細,上虛下實;二是不宜選用地下水位過低的大田種植棉花;三是要做到廂溝、腰溝、圍溝和排水大溝始終暢通。
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