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1 土壤板结 由于长期使用化肥,忽视有机质的施用,造成土壤板结,通气不良,使麦苗根系吸收能力减弱,表现为苗小而黄,分蘖少,因此,对这类苗应及时深中耕,疏土透气,并追施适量氮肥,可选用尿素或碳铵。2 秸秆还田不均匀 由于切秆装置在切秆时不均匀,犁地不认真,造成秸秆成堆埋入土里,使土壤虚空,当麦苗扎根时,由于扎根不好,因此生长缓慢,心叶发黄,此类苗要及时镇压、浇水、踏实土壤,并追施适宜的氮肥,如碳铵。
1 Soil compaction Due to long-term use of chemical fertilizers, ignoring the application of organic matter, resulting in soil compaction, poor ventilation, weakening the absorption capacity of the root of wheat germ, the performance of small and yellow seedlings, tillering less, so these seedlings should timely deep plowing, Breathable, and topdressing the amount of nitrogen, urea or ammonium bicarbonate can be used. 2 uneven stalks return to straw stalks due to uneven cutting device, plowing is not serious, resulting in a pile of straw buried in the soil, making the soil empty, when the wheat seedling root, due to poor rooting, so slow growth, the heart leaves Yellow, such seedlings to repression, watering, practical soil, and topdressing the appropriate nitrogen, such as ammonium bicarbonate.