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小麦出苗后,常由于缺乏必要的元素,造成幼苗生长不正常甚至死苗。因此,必须采取对症措施,确保麦苗正常生长。1.缺氮:表现为麦苗叶窄、色淡、黄瘦、分蘖少而弱。应及时追施氮肥,并注意氮、磷配合,每亩可施尿素7～8公斤或人粪尿700～1000公斤。2.缺磷:麦苗矮小,叶黄、根系不发达、次生根发生少、植株生长缓慢、叶尖呈紫色。应及时追施磷肥,每亩可施磷酸二铵5～10公斤。
Emergence of wheat, often due to the lack of the necessary elements, resulting in abnormal growth of seedlings or dead seedlings. Therefore, we must take symptomatic measures to ensure the normal growth of wheat seedlings. 1. Nitrogen deficiency: The performance of wheat seedling leaves narrow, pale, thin, less tiller and weak. Nitrogen fertilizer should be chased in time, and pay attention to nitrogen and phosphorus with urea per acre can be 7 to 8 kg or human waste of 700 to 1,000 kg. 2. Phosphorus deficiency: short wheat seedlings, leaf yellow, underdeveloped roots, secondary roots occur less, plant growth is slow, leaves purple. Phosphate fertilizer should be promptly chased, can be applied per acre DAP 5 to 10 kg.