观察试验表明,小麦倒伏后,靠自然恢复的减产最小。这是因为植物的茎叶有强烈的向光性和向上性,能够靠阳光的晒向上弯曲生长,使倒伏的麦株商立或半直立起来,并保持叶片进行光合作用。倒伏后,如用人工扶起来捆把或搭架,茎叶捆在一起,不能自展散开,通风透光不良,容易发黄霉烂,失去光合作用的能力,再加上人 Observations show that after lodging of wheat, the natural yield reduction is minimal. This is because plant stems and leaves have a strong light and upward sex, can rely on the sun’s sun bending upward growth, the lodging of wheat stand or semi-erect, and keep the leaves for photosynthesis. After lodging, such as hand-bounded to bundle or shelves, stems and leaves tied together, not self-spreading, poor ventilation poor, easy to hair yellow rot, loss of photosynthesis ability, coupled with the people