防治措施:⑴選擇適當的培養土,要求通透性好,防止爛根。⑵冬季溫度應保持在12℃yishang,yangguangchongzu。danyangguangguoqiangshixushidangzheyin,jilierizhishe。xiajiyingyanghuzaizheyangwangpengshinei,buyichangqibaoluzairiguangxia,gaowenjijieyaojishijiaoshui。jiaoshuiyingjianganjianshiyicijiaotou。⑶保持土壤 pH值為6.5-7,北方水質偏減,夏季每15天左右澆一次硫酸亞鐵。生產上每15天施一次稀薄液肥,抽出花梗後,施用硫酸二氫鉀2-3次。
葉片卷曲和焦邊、日ri灼zhuo病bing。為wei非fei侵qin染ran性xing病bing害hai,由you生sheng理li因yin素su所suo致zhi。一yi旦dan缺que水shui會hui呈cheng現xian葉ye片pian卷juan曲qu和he焦jiao邊bian,受shou陽yang光guang直zhi射she可ke引yin起qi日ri灼zhuo。鶴he望wang蘭lan葉ye片pian卷juan曲qu和he焦jiao邊bian病bing,成cheng株zhu葉ye片pian卷juan曲qu成cheng焦jiao邊bian,未wei見jian其qi他ta病bing症zheng。 日灼病,葉片上產生不規則型灼斑,邊緣明顯,前期至中期葉麵一般不長黴層,但到後期常腐生第二病原物。
手機版




