弱苗麦的发生及防治周伯瑜杨子江小麦出苗后至来春分蘖期前都算苗期。由于耕作、气象、土质、水肥等方面的影响，往往造成冬前苗弱，开春苗衰，衰苗弱苗无好麦，对生长发育和产量影响很大。“苗好一半收，苗差一半丢。”为了使弱苗转化为壮苗，必须按弱苗发生的种类、原因... The occurrence and control of Weak Miao Mai Zhou Boyu Yang Zijiang Spring wheat tillering stage after the arrival of spring are considered seedling stage. As a result of farming, meteorology, soil quality, water and fertilizer and other aspects of the impact, often result in weak winter, spring seedling failure, weak seedling weak seedlings, growth and yield of a great impact. “Good seedlings received half, half the seedlings lost.” In order to weak seedlings into strong seedlings, must be the type of weak seedlings, the reason ...