最(zui)近(jin)一(yi)段(duan)時(shi)間(jian)正(zheng)值(zhi)高(gao)溫(wen)多(duo)雨(yu)季(ji)節(jie),常(chang)常(chang)有(you)熱(re)暴(bao)雨(yu)襲(xi)擊(ji)農(nong)作(zuo)物(wu),對(dui)蔬(shu)菜(cai)的(de)危(wei)害(hai)最(zui)大(da)。在(zai)熱(re)暴(bao)雨(yu)後(hou),蔬(shu)菜(cai)莖(jing)葉(ye)被(bei)地(di)麵(mian)的(de)泥(ni)沙(sha)粘(zhan)附(fu)著(zhe),葉(ye)片(pian)上(shang)的(de)氣(qi)孔(kong)被(bei)堵(du)住(zhu),嚴(yan)重(zhong)地(di)影(ying)響(xiang)蔬(shu)菜(cai)的(de)呼(hu)吸(xi)、蒸zheng騰teng和he光guang合he作zuo用yong。加jia之zhi受shou熱re暴bao雨yu襲xi擊ji的de蔬shu菜cai植zhi株zhu被bei吹chui歪wai了le,莖jing葉ye容rong易yi折zhe斷duan,土tu壤rang板ban結jie,土tu壤rang中zhong空kong氣qi明ming顯xian減jian少shao,使shi根gen部bu被bei迫po進jin行xing無wu氧yang呼hu吸xi,導dao致zhi細xi胞bao中zhong毒du死si亡wang。此ci外wai,在zai熱re暴bao雨yu襲xi擊ji後hou,蔬shu菜cai抵di抗kang力li減jian弱ruo,將jiang會hui引yin起qi病bing害hai的de發fa生sheng和he傳chuan播bo,造zao成cheng不bu可ke估gu量liang的de損sun失shi。因yin此ci,應ying隨sui時shi收shou集ji氣qi象xiang資zi料liao,及ji早zao采cai取qu預yu防fang措cuo施shi,可ke將jiang災zai害hai損sun失shi降jiang至zhi最zui低di。那na麼me,如ru何he救jiu治zhi被bei熱re暴bao雨yu襲xi擊ji過guo的de蔬shu菜cai呢ne?據ju農nong技ji人ren員yuan研yan究jiu,應ying做zuo好hao以yi下xia防fang護hu措cuo施shi。
采取補救措施:可及時潑水或灌冷泉水、冷leng井jing水shui。當dang熱re暴bao雨yu過guo後hou,最zui好hao立li即ji組zu織zhi人ren工gong潑po水shui,在zai有you冷leng泉quan水shui或huo井jing水shui的de地di方fang,最zui好hao進jin行xing澆jiao灌guan,把ba粘zhan附fu莖jing葉ye的de泥ni沙sha洗xi掉diao,以yi降jiang低di土tu壤rang溫wen度du,增zeng加jia土tu壤rang氧yang氣qi,使shi蔬shu菜cai保bao持chi正zheng常chang呼hu吸xi狀zhuang態tai。及ji時shi排pai除chu積ji水shui,疏shu通tong或huo加jia深shen縱zong橫heng排pai水shui溝gou,使shi排pai水shui暢chang通tong。及ji時shi複fu耕geng,損sun失shi嚴yan重zhong的de菜cai田tian,考kao慮lv重zhong新xin播bo種zhong蔬shu菜cai,且qie選xuan擇ze在zai潮chao濕shi土tu壤rang條tiao件jian下xia發fa芽ya良liang好hao、生長日數短的小白菜、油菜等早熟菜種。
實施清園:收shou拾shi菜cai園yuan落luo葉ye,避bi免mian病bing害hai蔓man延yan。及ji時shi組zu織zhi人ren工gong洗xi沙sha,扶fu正zheng植zhi株zhu。隻zhi有you把ba粘zhan附fu莖jing葉ye的de泥ni沙sha洗xi掉diao,加jia上shang立li即ji扶fu正zheng,減jian少shao互hu相xiang擠ji壓ya現xian象xiang,才cai有you可ke能neng使shi蔬shu菜cai正zheng常chang生sheng長chang起qi來lai。