大棚黄瓜适宜温水肥的三种观察法一、从瓜蔓观察：①茎细、色浅、软弱，是缺肥；②节间过短是夜间温度过低；③节间过长是夜温过高；④茎粗、浓绿色，有棱角，半架以下的节间６～８厘米长，半架以上的节间８～１０厘米长，是肥、水、温度最适宜。二、从卷须观察：①卷须发... Greenhouse cucumber suitable for warm water and fertilizer three kinds of observation First, from the melon observed: ① stem thin, light color, weak, is lack of fat; ② internodes is too short at night temperature is too low; High; ④ stem thick, dark green, angular, below the interval of 6 to 8 cm long, more than half of the internode 8 to 10 cm long, fat, water, the most appropriate temperature. Second, from the tendrils to observe: ① tendrils hair ...