According to the law of ginger fertilizer absorption, the appropriate application of nitrogen fertilizer can greatly improve the yield and improve the quality, and increase the content of ginger starch, protein and volatile oil, and decrease the content of soluble sugar and cellulose. Among the four nitrogen fertilizers of ammonium bicarbonate, sodium nitrate, urea and ammonium nitrate, sodium nitrate has the best growth promoting effect on ginger in seedling stage. In the middle and late stages, the application of ammonium bicarbonate has the best effect on increasing the yield of ginger and increasing the content of volatile oil, starch and protein.
In order to obtain high-yield and high-quality ginger, it is necessary to pay attention to the application of nitrogen fertilizer on the basis of applying phosphorus and potassium fertilizer. Generally, 30 kg to 40 kg of nitrogen fertilizer should be applied per mu, and ammonium bicarbonate or ammonium nitrate should be preferred for nitrogen fertilizer varieties. In order to promote the rapid growth of ginger seedlings, sodium nitrate can be applied in an appropriate amount when applying phosphorus and potassium fertilizer as base fertilizer (accounting for about 20% of total fertilization).
In order to obtain high-yield and high-quality ginger, it is necessary to pay attention to the application of nitrogen fertilizer on the basis of applying phosphorus and potassium fertilizer. Generally, 30 kg to 40 kg of nitrogen fertilizer should be applied per mu, and ammonium bicarbonate or ammonium nitrate should be preferred for nitrogen fertilizer varieties. In order to promote the rapid growth of ginger seedlings, sodium nitrate can be applied in an appropriate amount when applying phosphorus and potassium fertilizer as base fertilizer (accounting for about 20% of total fertilization).
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