muqian,gongpengneiyixieshengchangqiduandeqiuchashucaiyijingcaishoujieshu,duoshucainongzaicihouhuijiazhongyichabocai。dantudichangnianlianchazhongzhi,debudaoxiuyang,weihaishiduofangmiande。
shouxian,tudibuxiecha,dilihuishoudaohendasunhai。changnianlianchazhongzhi,turangyangfensunshida,erhenduocainongzaishifeishangcunzaizhuduobuhelizhichu,ruhushizhongweiliangyuansushiyong,pianzhongshiyongmouyizhongdaliangyuansudeng,rongyizaochengturangyangfenyanzhongshitiao,yingxiangshucaideshengchangfayu。
其(qi)次(ci),土(tu)地(di)連(lian)茬(cha)種(zhong)植(zhi)會(hui)使(shi)土(tu)壤(rang)中(zhong)病(bing)原(yuan)物(wu)不(bu)斷(duan)積(ji)累(lei),放(fang)線(xian)菌(jun)等(deng)有(you)益(yi)微(wei)生(sheng)物(wu)逐(zhu)漸(jian)減(jian)少(shao),病(bing)蟲(chong)害(hai)增(zeng)多(duo)。拱(gong)棚(peng)秋(qiu)茬(cha)蔬(shu)菜(cai)采(cai)收(shou)結(jie)束(shu)加(jia)種(zhong)一(yi)茬(cha)菠(bo)菜(cai),棚(peng)上(shang)不(bu)撤(che)膜(mo),棚(peng)內(nei)溫(wen)度(du)一(yi)直(zhi)較(jiao)高(gao),根(gen)結(jie)線(xian)蟲(chong)等(deng)病(bing)原(yuan)物(wu)沒(mei)有(you)經(jing)過(guo)冬(dong)季(ji)低(di)溫(wen),存(cun)活(huo)量(liang)大(da),加(jia)重(zhong)了(le)拱(gong)棚(peng)病(bing)蟲(chong)害(hai)的(de)發(fa)生(sheng)。
那麼,拱棚秋茬蔬菜結束後如何管理好呢?一是秋茬蔬菜采收結束後盡早施肥、深shen翻fan土tu地di。肥fei料liao施shi入ru土tu壤rang後hou,需xu要yao經jing過guo一yi段duan時shi間jian才cai能neng轉zhuan化hua為wei可ke以yi直zhi接jie被bei作zuo物wu吸xi收shou的de養yang分fen,同tong時shi也ye消xiao除chu了le肥fei料liao的de副fu作zuo用yong,避bi免mian下xia茬cha蔬shu菜cai出chu現xian燒shao根gen、氣(qi)害(hai)等(deng)現(xian)象(xiang)。深(shen)翻(fan)地(di),土(tu)壤(rang)通(tong)透(tou)性(xing)改(gai)善(shan),肥(fei)料(liao)分(fen)布(bu)更(geng)加(jia)均(jun)勻(yun),有(you)利(li)於(yu)根(gen)係(xi)擴(kuo)展(zhan),為(wei)下(xia)茬(cha)蔬(shu)菜(cai)生(sheng)長(chang)打(da)下(xia)良(liang)好(hao)基(ji)礎(chu)。二(er)是(shi)早(zao)撤(che)膜(mo)。拱(gong)棚(peng)撤(che)膜(mo)晚(wan),使(shi)得(de)棚(peng)內(nei)溫(wen)度(du)較(jiao)高(gao),各(ge)類(lei)病(bing)原(yuan)物(wu)越(yue)冬(dong)的(de)數(shu)量(liang)更(geng)多(duo),增(zeng)加(jia)了(le)下(xia)茬(cha)蔬(shu)菜(cai)染(ran)病(bing)的(de)可(ke)能(neng)。及(ji)早(zao)撤(che)去(qu)棚(peng)膜(mo),低(di)溫(wen)等(deng)惡(e)劣(lie)環(huan)境(jing)可(ke)使(shi)各(ge)類(lei)病(bing)原(yuan)物(wu)失(shi)去(qu)活(huo)力(li)。病(bing)原(yuan)物(wu)少(shao)了(le),病(bing)害(hai)也(ye)就(jiu)不(bu)容(rong)易(yi)發(fa)生(sheng)了(le)。
近幾年冬季菠菜價格低迷,收益很低。在越冬茬菠菜效益很低的情況下,種植菠菜還不如歇茬養地,這樣春茬蔬菜長勢好、病害少、產量高,完全可以補上越冬茬菠菜的收益。
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