在小麦生产中,采用“石磙镇压”措施,尤其在小麦旺苗的管理上,能起到重要作用。(一)镇压后麦苗的茎叶变得弯曲,水分的输导受到抑制,主茎和大蘗的生长受挫,从而促进了小蘖的生长,增加了总分蘗数。(二)镇压后茎叶还受到损伤,使茎叶伤处的水分散失,蒸发量加大,所以茎叶一时呈现出萎蔫现象。地上部分生长大受抑制,但对地下部根系的生长却大有促进作用,从而使根系数量迅速增多。 In the wheat production, the use of “Shizhu suppression” measures, especially in the management of wheat seedlings, can play an important role. (A) The stems and leaves of wheat seedlings become buckled after suppression, the water transport is inhibited, and the growth of the main stems and big tillers is frustrated, thereby promoting the growth of small tillers and increasing the total number of tillers. (B) after the suppression of stems and leaves are also damaged, so that water loss stems and leaves injury, increased evaporation, so the moment showed wilting stems and leaves phenomenon. The growth of the above-ground part was greatly inhibited, but it greatly promoted the growth of the underground part of the root, resulting in a rapid increase in the number of roots.