5月初至6yuedi,shiganjucongxiehuadaowenguodeguanjianshiqi,zaiganjushengchanshang,tongchangchengciqiweiyouguoqi。qijian,ganjujiangjinglidiyicishengliluoguohediercishengliluoguolianggezhongyaodeshengliluoguojieduan。ciqidepeiguanhaohuai,wangwangzhijieyingxiangdangniandechanliangheguoshiwaiguanpinzhi。suoyi,jiaqiangganjuyouguoqidepeiguan,duiquannianganjushengchanjuyouzhongyaodeyiyi。weici,bizhejianyigejunongluoshihaoyixiasixiangpeiguancuoshi。
一是多次噴施葉麵肥,及時補充營養。葉麵追肥,不僅能經濟、快速的補充樹體養份、彌補前期各要素肥料的不足,而且還能及時調節樹冠體內環境,促進幼果發育。因此,應分別在謝花期、謝花後20-25天和40天,輪換選用別施曼+紅A硼+鋅肥、漯效王+紅A硼、磷酸二氫鉀+鋅肥0.2%的水溶液進行樹冠噴施,確保不出現異常生理落果。二是加強病蟲防治,確保果麵光潔。柑橘幼果期的主要病害有瘡痂病、炭疽病和樹脂病(砂皮病),主要蟲害是紅蜘蛛。建議橘農在暴風雨過後的初晴天選用“好克利”、“錳殺生”等農藥防治上述病害。同時,要加強對橘園紅蜘蛛發生情況的觀察,當園內紅蜘蛛基數上升至每100葉蟲口100頭以上時應及時選擇“蛛蟎除”、“金鑽”或“蟎危”denggaoxiaonongyaojinxingfangzhi。sanshijishimochuwangchangxia,xiaochushaoguomaodun。jinnianyushuichongzu,youliyuxiashaodedaliangchousheng,youqishiyoulingjieguoshuhewangchangshu,bujinxinshaochoushengliangda,erqiechangshiwangsheng,shaoguomaodunyanzhong。duici,junongyingjishimochujushudingbuwaiweiquanbuxinxiashao,zuodaosuichousuimo。sishitizaoshiyongzhuangguocushaofei,cujinguoshipengda,tigaoguoshizhengqidu。qiyue,shiganjuguoshixunsupengdajieduan,yeshicujinyouzhiqiushaochoushengpeiyangxianianjianzhuangjieguomuzhideguanjianshiqi,ruguociqifeishuibuzu,bujinhuizhijieyingxiangdangnianguoshichanlianghepinzhi,erqiehaihuiyingxiangxianiandejieguoshuliang。weilebaozhengqiyuefenjushujunhengshengchang,shixianwendangnian、促下年的培管目的,各橘農應搶在六月中旬至六月底前的雨季(七月幹旱到來前)追施壯果肥,便於肥料的轉化利用。這次肥料的施用,應以有機無機肥為主,並視結果量的多少與樹勢情況每畝穴施有機無機複合肥100-150公斤。
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