立春以后,三麦营养生长和生殖生长并进,同时逐步地以生殖生长为主,进入幼穗分化期。前一时期干旱,三麦的地上地下部分生长困难,春节前后又连续雨雪,土壤中水多气少,影响根系发育,以致地上部分返青增叶增蘖缓慢。特别是晚播晚栽的三类苗转化不明显。因此,解决“水”和“气”的矛 After the beginning of spring, three wheat nutrition and reproductive growth go hand in hand, while gradually dominated by reproductive growth, into the panicle differentiation period. The previous period of drought, Sanmai underground part of the growth difficulties, continuous rain and snow before and after the Spring Festival, the soil less water gas, affecting the root development, so that the ground part of the green leaves by the slow increase. In particular, late planting late three types of seedling transformation is not obvious. Therefore, to solve the “water” and “gas” spear