1.枯梢:zaochungangkaishishengchangshi,huifashengkushao。daoxiamo,xinshaoshangdeyezichengzongse,eryebingchenghongse,zhenggeyepianchengtuqihuoniuquzhuang。zaiyedejianduanjibianyuanchuchuxianhuaisiquyu。dianxingzhengzhuangshizhitiaodingduanderenpibujixingchengcengzhongchengxianxixiaodehuaisiquyu,zhezhongleixingdehuaisi,changjianyuyeyexiamiandezuzhi,zaikuodajiushixinshaocongdingduanwangxiafashengkusi。
2.掃帚枝:春(chun)季(ji),看(kan)起(qi)來(lai)正(zheng)常(chang)的(de)芽(ya)停(ting)止(zhi)生(sheng)長(chang)或(huo)生(sheng)長(chang)得(de)很(hen)慢(man),不(bu)久(jiu)即(ji)死(si)亡(wang)。受(shou)害(hai)枝(zhi)從(cong)頂(ding)端(duan)到(dao)幾(ji)年(nian)的(de)木(mu)質(zhi)部(bu)都(dou)會(hui)逐(zhu)漸(jian)死(si)亡(wang),緊(jin)靠(kao)著(zhe)死(si)亡(wang)部(bu)分(fen),下(xia)麵(mian)側(ce)芽(ya)長(chang)出(chu)許(xu)多(duo)不(bu)正(zheng)常(chang)的(de)細(xi)枝(zhi),這(zhe)些(xie)小(xiao)枝(zhi)又(you)迅(xun)速(su)死(si)亡(wang),刺(ci)激(ji)著(zhe)其(qi)他(ta)萌(meng)發(fa)枝(zhi)的(de)發(fa)育(yu),以(yi)致(zhi)形(xing)成(cheng)掃(sao)帚(zhou)狀(zhuang)。這(zhe)種(zhong)類(lei)型(xing)的(de)缺(que)硼(peng),可(ke)在(zai)幾(ji)年(nian)之(zhi)內(nei)使(shi)整(zheng)株(zhu)死(si)亡(wang)。
3.簇葉:在早春或夏末發生枯梢以後,從不正常的短節上長出非常細小、較厚和易脆的葉片,它們多半發育不全,葉緣平滑無鋸齒。
4.落果:果(guo)實(shi)發(fa)育(yu)初(chu)期(qi)還(hai)可(ke)形(xing)成(cheng)木(mu)栓(shuan)層(ceng),漸(jian)漸(jian)地(di)在(zai)幼(you)果(guo)皮(pi)上(shang)出(chu)現(xian)水(shui)浸(jin)狀(zhuang)壞(huai)死(si)區(qu)域(yu),壞(huai)死(si)區(qu)域(yu)逐(zhu)漸(jian)變(bian)硬(ying),呈(cheng)褐(he)色(se),以(yi)後(hou),由(you)於(yu)果(guo)實(shi)的(de)生(sheng)長(chang)使(shi)果(guo)皮(pi)發(fa)生(sheng)裂(lie)縫(feng)及(ji)皺(zhou)縮(suo),並(bing)形(xing)成(cheng)薄(bo)層(ceng)粉(fen)霜(shuang),果(guo)實(shi)早(zao)期(qi)脫(tuo)落(luo),或(huo)者(zhe)仍(reng)掛(gua)在(zai)枝(zhi)上(shang)。
5.苦果:缺硼的果實,可在落花後兩周到采前任一時間內,在果肉內形成“內木栓層”。最初在果肉內顯出水浸狀區域,以後,很快變成褐色潰瘍,幹後形成木栓。如病症早期發生,受害果畸形、早落;若晚期發生,則果實不畸形,但果肉內有較大褐色潰瘍。成熟果的褐色潰瘍部分有苦味。
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