主幹塗白:早zao春chun進jin行xing主zhu幹gan塗tu白bai,可ke使shi樹shu體ti溫wen度du升sheng降jiang緩huan慢man,減jian輕qing日ri燒shao和he凍dong害hai,延yan遲chi果guo樹shu萌meng芽ya和he開kai花hua,從cong而er有you效xiao避bi免mian早zao春chun霜shuang害hai,同tong時shi還hai可ke兼jian治zhi樹shu幹gan病bing蟲chong害hai。
熏煙防霜凍:根gen據ju曆li年nian來lai果guo樹shu受shou霜shuang凍dong的de經jing驗yan,在zai果guo樹shu萌meng動dong後hou要yao注zhu意yi天tian氣qi預yu報bao情qing況kuang,特te別bie是shi夜ye間jian,當dang氣qi溫wen降jiang至zhi果guo樹shu受shou凍dong臨lin界jie溫wen度du時shi開kai始shi薰xun煙yan,直zhi至zhi氣qi溫wen回hui升sheng到dao受shou凍dong臨lin界jie溫wen度du以yi上shang時shi熄xi火huo。一yi般ban用yong煙yan霧wu較jiao大da、略潮濕一點的柴草為原料,如麥秸、殘枝落葉、鋸末等,或用防霜煙霧劑進行熏煙。為提高防霜凍的效果,可按上風向多放柴草、下風向少放柴草的原則,一般每畝果園堆4堆~5堆,每堆用料25公斤左右。
霜前灌水:低溫來臨前3天~5天(tian)及(ji)時(shi)灌(guan)水(shui),防(fang)效(xiao)最(zui)好(hao)。霜(shuang)前(qian)灌(guan)水(shui),晚(wan)上(shang)水(shui)溫(wen)比(bi)土(tu)溫(wen)高(gao),水(shui)可(ke)使(shi)土(tu)壤(rang)增(zeng)加(jia)大(da)量(liang)的(de)熱(re)量(liang),同(tong)時(shi)灌(guan)水(shui)後(hou)可(ke)使(shi)土(tu)壤(rang)導(dao)熱(re)率(lv)增(zeng)大(da),有(you)利(li)於(yu)土(tu)壤(rang)深(shen)層(ceng)的(de)熱(re)量(liang)向(xiang)上(shang)傳(chuan)遞(di),灌(guan)水(shui)後(hou)先(xian)不(bu)要(yao)劃(hua)鋤(chu)。
噴藥劑防霜:凍dong在zai果guo樹shu萌meng動dong後hou至zhi開kai花hua前qian,噴pen施shi能neng夠gou提ti高gao果guo樹shu抗kang逆ni性xing的de藥yao劑ji,同tong時shi配pei合he葉ye麵mian噴pen肥fei,可ke有you效xiao地di預yu防fang霜shuang害hai的de發fa生sheng。從cong試shi驗yan調tiao查zha情qing況kuang來lai看kan,花hua前qian噴pen保bao利li豐feng、保得、植病靈83增抗劑、PBD等,均能取得較好的效果。
手機版




