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一、花打顶 1、症状 植株生长点结间短缩,茎端密生小瓜纽,上部叶片密集,不见生长点伸出而封顶。 2、发生原因 (1)苗龄太长,蹲苗过狠,幼苗老化形成小老苗。 (2)土壤干旱,水肥供应不足,生长停滞。 (3)定植后长时间处于较低温?
First, the top of the flower 1, the symptoms of plant growth point between the shortening, stem end of small melon New Zealand, the upper leaves of intensive, no growth point out and capped. 2, the causes (1) seedling age is too long, squat seedlings too ruthless, seedling aging formation of small seedlings. (2) soil drought, insufficient supply of water and fertilizer, growth stagnation. (3) long time after planting at a lower temperature?