Lotus root, especially for shallow water ponds planted for many years, due to long-term flooding in soil, poor ventilation conditions, iron, zinc, copper and other trace elements in the soil is difficult to meet the needs of the shallow bract growth, showing slow growth, "the lotus leaf is full of stars Without closure, there are symptoms of lack of fertilizer. If you do not use the fertilizer in a timely manner, serious production loss will occur, resulting in greater economic losses.
Nitrogen deficiency prevents lotus roots from being pale yellow, with small and thin leaves, short petiole stems and slender lianbian stalks. Applying 100 kg of ammonium bicarbonate per acre or 35 kg of urea can rapidly enhance the photosynthesis of lotus leaf growth, which is beneficial to the formation and accumulation of protein and various vitamins in lotus root plants, and increase the yield of lotus root production. However, if too much nitrogen is applied, the lotus leaf color will be dark green, the petiole will be slender, and the pests and diseases will be seriously harmed. The lotus root yield is also not high.
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