小麦冬前旺长能使生育期提前,养分积累减少,抗寒能力下降,不利于安全越冬,且旺苗在冬前由于消耗了大量养分,本身的营养物质储备很少,春季常常生长较弱,容易脱肥。2004年秋本市部分麦田播种早,特别是部分弱春性品种播种较早,且12月上中旬温度持续偏高,小麦出现旺长现象,特安排该 Wheat winter long before the growth period can make early growth period, reduced nutrient accumulation, decreased ability to cold, is not conducive to the safety of winter, and Mongolian seedlings in the winter due to the consumption of a large number of nutrients, their own reserves of nutrients is very small, the spring often grow weak , Easy to take off. In autumn 2004, some wheat fields planted early, especially some weakened spring sowing earlier, and the temperature in mid-December continued to be high and the phenomenon of flourishing wheat appeared.