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冬小麦苗期是指从小麦播种出苗到小麦的起身拔节期,小麦苗期经历一个严寒的冬季,如果管理不好,往往造成一系列生理性畸形苗的发生,对小麦苗期的生长发育影响较大,最终影响到小麦产量。1、立针苗(一根针)发生原因:播种质量不好,播种量过大、播种过深或播前整地不好,播种后地块压苗严重都易形成立针苗。有时为防麦苗受冻,施用土杂肥盖麦苗,盖的厚,到春季起身时,容易形成立针苗。立针苗的长相特点:似一根针立在那里,分蘖少,叶片少,
Winter wheat seedling refers to seedling emergence from wheat to jointing stage of wheat, wheat seedling through a cold winter, if not managed, often resulting in a series of physiological deformities, the growth and development of wheat seedling more Large, ultimately affecting wheat yield. 1, stitches needles (a needle) causes: poor sowing quality, sowing too much, sowing too deep or sowing before the preparation is not good, sowing seedling pressure seedlings are easy to form a vertical needle seedlings. Sometimes anti-wheat germ freezing, the application of soil mixed fertilizer cover wheat seedlings, thick cover, get up in the spring, it is easy to form vertical needle seedlings. Needle seedling appearance features: like a needle standing there, fewer tillers, fewer leaves,