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夏大豆生育期间经常遭受涝害。大豆受涝后一般减产2—3成以上,重则颗粒无收。一、症状和原因大豆根区土壤受涝后,植株表现在:(一)上中部叶片失绿呈浅黄色,严重时呈黄白色;下部1—2片复叶早衰、枯黄、脱落。
Summer soybean often suffer waterlogging during childbirth. Soybean yield generally after the floods by 2-3 percent, while the crop is no crop. First, the symptoms and causes Soybean rhizosphere soil after flooding, the plants showed: (A) on the central leaves pale green, yellowish white when serious; lower 1-2 complex foliar premature aging, brown, fall off.