濕害的防護與排除主要是排除漬水、改良土壤。具體措施為:①理順水係,溝渠配套,排除地麵水,降低地下水。開溝排水,明、暗溝結合,其中主溝深挖至1m;對少量低窪茶園挑客土,填、抬高茶園地平麵;切斷滲透水來源,在滲水上方開挖深1~1.2米的深溝。②增施有機肥,多種青綠肥,提高肥力,改善土壤通透性。③對濕害嚴重、缺株多的園塊進行移植歸並,並采取開挖排水溝和蓄水池、漚肥塘等措施,將挖出的泥土填入其他的茶園中,以徹底解除濕害的威脅,土地重新平整後,實施高標準種茶;對受害嚴重、改造難度較大、投入產出並不合算的地塊,應棄茶而改作其他適宜用途。
今年入春以來我市出現了罕見的連續陰雨天氣,降雨量比正常年份增多40%yishang,changshijiandeyinyutianqiduichashushengchanghuidailaiyidingdeyingxiang。ruguochayuanturangzhidinianzhong,toushuibuliang,huocunzaibutoushuicenghuonantoushuiceng,ruyuanlaiyoushuidaotiangaizhongchashu,zhongzhiqianmeiyouduishuitiandegeshuicengjinxingchedidepochudechayuan。zaoyumuqianchangqiyinyu,paishuibuchang,jiuhuichanshengchayuanshihai。chayuanshihaicongsunhaichashudegenxikaishi,genxidesunhaidaozhidishangbuyounenzhilao、從葉到莖的損害,先是嫩葉現黃現暗,進而芽葉萎縮、脫落,受害茶樹芽葉失綠黃瘦,短小稀疏,分枝稀少發白、樹勢矮小、生sheng長chang緩huan慢man甚shen至zhi停ting止zhi生sheng長chang。茶cha樹shu濕shi害hai的de症zheng狀zhuang發fa展zhan快kuai,顯xian現xian慢man,當dang從cong茶cha園yuan表biao現xian上shang發fa現xian嚴yan重zhong的de濕shi害hai症zheng狀zhuang時shi,茶cha樹shu的de損sun害hai幾ji乎hu無wu法fa挽wan回hui。因yin此ci,事shi先xian預yu防fang,及ji早zao發fa現xian,及ji時shi排pai除chu極ji為wei重zhong要yao。
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