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1冬小麦越冬死苗的原因通过几年的调查,伊宁县冬小麦越冬死苗的主要原因是栽培管理不当所引起。主要表现在“浅、干、瘦、过、晚、板”6个方面。1.1浅指的是播种深度浅,秋季整地质量差,未及时秋耕耪耙,仓促整地,低洼不匀,分蘖节埋土深度不足3厘米。1.2干指分蘖节部位土壤干旱,冷暖骤变加剧,旱、寒双害所致。1.3瘦指秋整地时有机肥少,只用少量氮肥,分蘖节糖分积累不足,冬小麦抗寒性差受冻而死。
A winter winter seedlings overwintering reasons through several years of investigation, Yining winter wheat overwintering dead seedlings caused by improper cultivation and management. Mainly in the “light, dry, thin, too late, board” 6 aspects. 1.1 Shallow refers to the depth of sowing shallow, poor quality of autumn soil preparation, autumn ripper did not promptly rake, rush to site preparation, low-lying unevenness, buried depth of less than 3 cm tiller node. 1.2 Dry refers to the tillering node soil drought, cold and warm surge intensified, drought, cold double harm caused. 1.3 thin fingers autumn organic fertilizer less, only a small amount of nitrogen, tillering node sugar accumulation, winter wheat poor cold tolerance and died.