溫度管理:
中(zhong)旬(xun)出(chu)現(xian)的(de)持(chi)續(xu)高(gao)溫(wen)的(de)天(tian)氣(qi)和(he)連(lian)續(xu)陰(yin)雨(yu)天(tian)氣(qi),對(dui)秋(qiu)茬(cha)栽(zai)培(pei)的(de)蔬(shu)菜(cai)幼(you)苗(miao)形(xing)成(cheng)較(jiao)大(da)的(de)威(wei)脅(xie)。持(chi)續(xu)的(de)高(gao)溫(wen)天(tian)氣(qi),不(bu)但(dan)影(ying)響(xiang)幼(you)苗(miao)的(de)正(zheng)常(chang)生(sheng)長(chang),造(zao)成(cheng)生(sheng)長(chang)點(dian)萎(wei)焉(yan)、生長停滯等不正常的生長狀態,並且高溫條件容易影響幼苗的花芽分化,導致前期落花、落果和畸形果比例較高,使前期產量大大降低。
各大類蔬菜的管理:
茄果類蔬菜:茄果類蔬菜在高溫高濕條件下,容易出現徒長和發生苗期病害(猝倒病、立枯病和莖基腐病)。管(guan)理(li)過(guo)程(cheng)中(zhong),要(yao)做(zuo)到(dao)控(kong)溫(wen)控(kong)水(shui),注(zhu)意(yi)上(shang)好(hao)遮(zhe)陽(yang)網(wang)和(he)防(fang)蟲(chong)網(wang)。定(ding)植(zhi)後(hou),注(zhu)意(yi)控(kong)製(zhi)澆(jiao)水(shui)量(liang),澆(jiao)水(shui)做(zuo)到(dao)小(xiao)水(shui)勤(qin)澆(jiao),見(jian)幹(gan)見(jian)濕(shi),防(fang)止(zhi)濕(shi)度(du)過(guo)大(da),感(gan)染(ran)苗(miao)期(qi)病(bing)害(hai)。在(zai)出(chu)現(xian)苗(miao)期(qi)病(bing)害(hai)後(hou),可(ke)以(yi)用(yong)惡(e)黴(mei)靈(ling)500倍液或根腐康600倍液+生根壯苗劑或豐收一號灌根治療;也可以通過衝施防病型健之寶,每畝用量40~60公斤。
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