大棚辣椒膨果期,隻長秧子不結果,許多大棚辣椒高度長到了1.2米以上,上邊開出的白花也開始脫落,當地的農民說:“什麼法也用了,什麼藥也打了,就是不結果。”這是怎麼回事?
筆bi者zhe應ying農nong民min的de要yao求qiu,來lai到dao大da棚peng查zha看kan,幫bang助zhu農nong民min現xian場chang分fen析xi原yuan因yin,結jie果guo發fa現xian,當dang地di農nong民min在zai用yong肥fei觀guan念nian上shang還hai比bi較jiao落luo後hou,缺que乏fa科ke學xue用yong肥fei知zhi識shi。特te別bie是shi偏pian施shi氮dan肥fei,和he高gao氮dan高gao鉀jia肥fei料liao,有you些xie菜cai農nong偏pian信xin一yi些xie經jing銷xiao商shang的de虛xu假jia宣xuan傳chuan,選xuan用yong一yi些xie速su效xiao衝chong施shi肥fei,由you於yu這zhe些xie衝chong施shi肥fei含han氮dan高gao,個ge別bie還hai含han有you大da量liang的de激ji素su,所suo以yi造zao成cheng辣la椒jiao前qian期qi秧yang子zi徒tu長chang,後hou期qi脫tuo肥fei嚴yan重zhong。在zai調tiao查zha中zhong還hai發fa現xian,當dang地di農nong民min多duo數shu長chang期qi施shi用yong化hua學xue肥fei料liao,特te別bie是shi硝xiao態tai氮dan肥fei料liao,造zao成cheng土tu壤rang板ban結jie、鹽yan化hua,嚴yan重zhong影ying響xiang大da棚peng辣la椒jiao的de正zheng常chang生sheng長chang和he辣la椒jiao品pin質zhi,建jian議yi農nong民min用yong多duo生sheng物wu菌jun劑ji或huo複fu合he微wei生sheng物wu肥fei料liao和he純chun硫liu酸suan鉀jia作zuo衝chong施shi肥fei。同tong時shi對dui徒tu長chang辣la椒jiao可ke葉ye麵mian噴pen施shi誘you導dao劑ji200倍液控製旺長,並配合富利硼給辣椒補硼,有利於提高辣椒花芽分化,提高辣椒坐果率。
對已經徒長的辣椒,應降低室內溫度,中午應控製在25-28℃,不少農民為加快膨果,把溫度升到32℃以(yi)上(shang),結(jie)果(guo)為(wei)了(le)膨(peng)果(guo)反(fan)而(er)造(zao)成(cheng)落(luo)果(guo),這(zhe)是(shi)管(guan)理(li)上(shang)的(de)失(shi)誤(wu)。由(you)此(ci)看(kan)來(lai),不(bu)是(shi)投(tou)入(ru)越(yue)多(duo)才(cai)能(neng)增(zeng)產(chan)增(zeng)收(shou),而(er)應(ying)對(dui)症(zheng)下(xia)藥(yao),通(tong)過(guo)科(ke)學(xue)施(shi)肥(fei),配(pei)方(fang)施(shi)肥(fei),才(cai)能(neng)提(ti)高(gao)產(chan)量(liang)。尤(you)其(qi)要(yao)重(zhong)視(shi)對(dui)微(wei)生(sheng)物(wu)菌(jun)肥(fei)的(de)應(ying)用(yong)。
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